[Web] Rename JavaScript platform to Web.

Also rename export name from "HTML5" to "Web".

51 files changed, 15436 insertions, 0 deletions

diff --git a/platform/web/.eslintrc.engine.js b/platform/web/.eslintrc.engine.js
new file mode 100644
index 0000000000..78df6d41d9
--- /dev/null
+++ b/platform/web/.eslintrc.engine.js
@@ -0,0 +1,10 @@
+module.exports = {
+	"extends": [
+		"./.eslintrc.js",
+	],
+	"globals": {
+		"InternalConfig": true,
+		"Godot": true,
+		"Preloader": true,
+	},
+};
diff --git a/platform/web/.eslintrc.js b/platform/web/.eslintrc.js
new file mode 100644
index 0000000000..2c81f1f02d
--- /dev/null
+++ b/platform/web/.eslintrc.js
@@ -0,0 +1,51 @@
+module.exports = {
+	"env": {
+		"browser": true,
+		"es2021": true,
+	},
+	"extends": [
+		"airbnb-base",
+	],
+	"parserOptions": {
+		"ecmaVersion": 12,
+	},
+	"ignorePatterns": "*.externs.js",
+	"rules": {
+		"func-names": "off",
+		// Use tabs for consistency with the C++ codebase.
+		"indent": ["error", "tab"],
+		"max-len": "off",
+		"no-else-return": ["error", {allowElseIf: true}],
+		"curly": ["error", "all"],
+		"brace-style": ["error", "1tbs", { "allowSingleLine": false }],
+		"no-bitwise": "off",
+		"no-continue": "off",
+		"no-self-assign": "off",
+		"no-tabs": "off",
+		"no-param-reassign": ["error", { "props": false }],
+		"no-plusplus": "off",
+		"no-unused-vars": ["error", { "args": "none" }],
+		"prefer-destructuring": "off",
+		"prefer-rest-params": "off",
+		"prefer-spread": "off",
+		"camelcase": "off",
+		"no-underscore-dangle": "off",
+		"max-classes-per-file": "off",
+		"prefer-arrow-callback": "off",
+		// Messes up with copyright headers in source files.
+		"spaced-comment": "off",
+		// Completely breaks emscripten libraries.
+		"object-shorthand": "off",
+		// Closure compiler (exported properties)
+		"quote-props": ["error", "consistent"],
+		"dot-notation": "off",
+		// No comma dangle for functions (it's madness, and ES2017)
+		"comma-dangle": ["error", {
+			"arrays": "always-multiline",
+			"objects": "always-multiline",
+			"imports": "always-multiline",
+			"exports": "always-multiline",
+			"functions": "never"
+		}],
+	}
+};
diff --git a/platform/web/.eslintrc.libs.js b/platform/web/.eslintrc.libs.js
new file mode 100644
index 0000000000..8e579fd462
--- /dev/null
+++ b/platform/web/.eslintrc.libs.js
@@ -0,0 +1,26 @@
+module.exports = {
+	"extends": [
+		"./.eslintrc.js",
+	],
+	"globals": {
+		"LibraryManager": true,
+		"mergeInto": true,
+		"autoAddDeps": true,
+		"HEAP8": true,
+		"HEAPU8": true,
+		"HEAP32": true,
+		"HEAPF32": true,
+		"ERRNO_CODES": true,
+		"FS": true,
+		"IDBFS": true,
+		"GodotOS": true,
+		"GodotConfig": true,
+		"GodotEventListeners": true,
+		"GodotRuntime": true,
+		"GodotFS": true,
+		"IDHandler": true,
+		"Browser": true,
+		"GL": true,
+		"XRWebGLLayer": true,
+	},
+};
diff --git a/platform/web/README.md b/platform/web/README.md
new file mode 100644
index 0000000000..1265ca09df
--- /dev/null
+++ b/platform/web/README.md
@@ -0,0 +1,22 @@
+# Web platform port
+
+This folder contains the C++ and JavaScript code for the Web platform port,
+compiled using [Emscripten](https://emscripten.org/).
+
+It also contains a ESLint linting setup (see [`package.json`](package.json)).
+
+See also [`misc/dist/html`](/misc/dist/html) folder for additional files used by
+this platform such as the html shell (web page).
+
+## Documentation
+
+- [Compiling for the Web](https://docs.godotengine.org/en/latest/development/compiling/compiling_for_web.html)
+  - Instructions on building this platform port from source.
+- [Exporting for the Web](https://docs.godotengine.org/en/latest/tutorials/export/exporting_for_web.html)
+  - Instructions on using the compiled export templates to export a project.
+
+## Artwork license
+
+[`logo.png`](logo.png) and [`run_icon.png`](run_icon.png) are licensed under
+[Creative Commons Attribution 3.0 Unported](https://www.w3.org/html/logo/faq.html#how-licenced)
+per the HTML5 logo usage guidelines.
diff --git a/platform/web/SCsub b/platform/web/SCsub
new file mode 100644
index 0000000000..78d7ce4074
--- /dev/null
+++ b/platform/web/SCsub
@@ -0,0 +1,93 @@
+#!/usr/bin/env python
+
+Import("env")
+
+web_files = [
+    "audio_driver_web.cpp",
+    "display_server_web.cpp",
+    "http_client_web.cpp",
+    "javascript_singleton.cpp",
+    "web_main.cpp",
+    "os_web.cpp",
+    "api/web_tools_editor_plugin.cpp",
+]
+
+sys_env = env.Clone()
+sys_env.AddJSLibraries(
+    [
+        "js/libs/library_godot_audio.js",
+        "js/libs/library_godot_display.js",
+        "js/libs/library_godot_fetch.js",
+        "js/libs/library_godot_os.js",
+        "js/libs/library_godot_runtime.js",
+        "js/libs/library_godot_input.js",
+    ]
+)
+
+if env["javascript_eval"]:
+    sys_env.AddJSLibraries(["js/libs/library_godot_javascript_singleton.js"])
+
+for lib in sys_env["JS_LIBS"]:
+    sys_env.Append(LINKFLAGS=["--js-library", lib.abspath])
+for js in env["JS_PRE"]:
+    sys_env.Append(LINKFLAGS=["--pre-js", js.abspath])
+for ext in env["JS_EXTERNS"]:
+    sys_env["ENV"]["EMCC_CLOSURE_ARGS"] += " --externs " + ext.abspath
+
+build = []
+if env["gdnative_enabled"]:
+    build_targets = ["#bin/godot${PROGSUFFIX}.js", "#bin/godot${PROGSUFFIX}.wasm"]
+    if env["threads_enabled"]:
+        build_targets.append("#bin/godot${PROGSUFFIX}.worker.js")
+    # Reset libraries. The main runtime will only link emscripten libraries, not godot ones.
+    sys_env["LIBS"] = []
+    # We use IDBFS. Since Emscripten 1.39.1 it needs to be linked explicitly.
+    sys_env.Append(LIBS=["idbfs.js"])
+    # Configure it as a main module (dynamic linking support).
+    sys_env.Append(CCFLAGS=["-s", "MAIN_MODULE=1"])
+    sys_env.Append(LINKFLAGS=["-s", "MAIN_MODULE=1"])
+    sys_env.Append(CCFLAGS=["-s", "EXPORT_ALL=1"])
+    sys_env.Append(LINKFLAGS=["-s", "EXPORT_ALL=1"])
+    sys_env.Append(LINKFLAGS=["-s", "WARN_ON_UNDEFINED_SYMBOLS=0"])
+    # Force exporting the standard library (printf, malloc, etc.)
+    sys_env["ENV"]["EMCC_FORCE_STDLIBS"] = "libc,libc++,libc++abi"
+    # The main emscripten runtime, with exported standard libraries.
+    sys = sys_env.Program(build_targets, ["web_runtime.cpp"])
+
+    # The side library, containing all Godot code.
+    wasm_env = env.Clone()
+    wasm_env.Append(CPPDEFINES=["WASM_GDNATIVE"])  # So that OS knows it can run GDNative libraries.
+    wasm_env.Append(CCFLAGS=["-s", "SIDE_MODULE=2"])
+    wasm_env.Append(LINKFLAGS=["-s", "SIDE_MODULE=2"])
+    wasm = wasm_env.add_program("#bin/godot.side${PROGSUFFIX}.wasm", web_files)
+    build = sys + [wasm[0]]
+else:
+    build_targets = ["#bin/godot${PROGSUFFIX}.js", "#bin/godot${PROGSUFFIX}.wasm"]
+    if env["threads_enabled"]:
+        build_targets.append("#bin/godot${PROGSUFFIX}.worker.js")
+    # We use IDBFS. Since Emscripten 1.39.1 it needs to be linked explicitly.
+    sys_env.Append(LIBS=["idbfs.js"])
+    build = sys_env.Program(build_targets, web_files + ["web_runtime.cpp"])
+
+sys_env.Depends(build[0], sys_env["JS_LIBS"])
+sys_env.Depends(build[0], sys_env["JS_PRE"])
+sys_env.Depends(build[0], sys_env["JS_EXTERNS"])
+
+engine = [
+    "js/engine/preloader.js",
+    "js/engine/config.js",
+    "js/engine/engine.js",
+]
+externs = [env.File("#platform/web/js/engine/engine.externs.js")]
+js_engine = env.CreateEngineFile("#bin/godot${PROGSUFFIX}.engine.js", engine, externs)
+env.Depends(js_engine, externs)
+
+wrap_list = [
+    build[0],
+    js_engine,
+]
+js_wrapped = env.Textfile("#bin/godot", [env.File(f) for f in wrap_list], TEXTFILESUFFIX="${PROGSUFFIX}.wrapped.js")
+
+# Extra will be the thread worker, or the GDNative side, or None
+extra = build[2:] if len(build) > 2 else None
+env.CreateTemplateZip(js_wrapped, build[1], extra)
diff --git a/platform/web/api/api.cpp b/platform/web/api/api.cpp
new file mode 100644
index 0000000000..a724b0456d
--- /dev/null
+++ b/platform/web/api/api.cpp
@@ -0,0 +1,116 @@
+/*************************************************************************/
+/*  api.cpp                                                              */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "api.h"
+#include "core/config/engine.h"
+#include "javascript_singleton.h"
+#include "web_tools_editor_plugin.h"
+
+static JavaScript *javascript_singleton;
+
+void register_web_api() {
+	WebToolsEditorPlugin::initialize();
+	GDREGISTER_ABSTRACT_CLASS(JavaScriptObject);
+	GDREGISTER_ABSTRACT_CLASS(JavaScript);
+	javascript_singleton = memnew(JavaScript);
+	Engine::get_singleton()->add_singleton(Engine::Singleton("JavaScript", javascript_singleton));
+}
+
+void unregister_web_api() {
+	memdelete(javascript_singleton);
+}
+
+JavaScript *JavaScript::singleton = nullptr;
+
+JavaScript *JavaScript::get_singleton() {
+	return singleton;
+}
+
+JavaScript::JavaScript() {
+	ERR_FAIL_COND_MSG(singleton != nullptr, "JavaScript singleton already exist.");
+	singleton = this;
+}
+
+JavaScript::~JavaScript() {}
+
+void JavaScript::_bind_methods() {
+	ClassDB::bind_method(D_METHOD("eval", "code", "use_global_execution_context"), &JavaScript::eval, DEFVAL(false));
+	ClassDB::bind_method(D_METHOD("get_interface", "interface"), &JavaScript::get_interface);
+	ClassDB::bind_method(D_METHOD("create_callback", "callable"), &JavaScript::create_callback);
+	{
+		MethodInfo mi;
+		mi.name = "create_object";
+		mi.arguments.push_back(PropertyInfo(Variant::STRING, "object"));
+		ClassDB::bind_vararg_method(METHOD_FLAGS_DEFAULT, "create_object", &JavaScript::_create_object_bind, mi);
+	}
+	ClassDB::bind_method(D_METHOD("download_buffer", "buffer", "name", "mime"), &JavaScript::download_buffer, DEFVAL("application/octet-stream"));
+	ClassDB::bind_method(D_METHOD("pwa_needs_update"), &JavaScript::pwa_needs_update);
+	ClassDB::bind_method(D_METHOD("pwa_update"), &JavaScript::pwa_update);
+	ADD_SIGNAL(MethodInfo("pwa_update_available"));
+}
+
+#if !defined(WEB_ENABLED) || !defined(JAVASCRIPT_EVAL_ENABLED)
+Variant JavaScript::eval(const String &p_code, bool p_use_global_exec_context) {
+	return Variant();
+}
+
+Ref<JavaScriptObject> JavaScript::get_interface(const String &p_interface) {
+	return Ref<JavaScriptObject>();
+}
+
+Ref<JavaScriptObject> JavaScript::create_callback(const Callable &p_callable) {
+	return Ref<JavaScriptObject>();
+}
+
+Variant JavaScript::_create_object_bind(const Variant **p_args, int p_argcount, Callable::CallError &r_error) {
+	if (p_argcount < 1) {
+		r_error.error = Callable::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS;
+		r_error.argument = 0;
+		return Ref<JavaScriptObject>();
+	}
+	if (p_args[0]->get_type() != Variant::STRING) {
+		r_error.error = Callable::CallError::CALL_ERROR_INVALID_ARGUMENT;
+		r_error.argument = 0;
+		r_error.expected = Variant::STRING;
+		return Ref<JavaScriptObject>();
+	}
+	return Ref<JavaScriptObject>();
+}
+#endif
+#if !defined(WEB_ENABLED)
+bool JavaScript::pwa_needs_update() const {
+	return false;
+}
+Error JavaScript::pwa_update() {
+	return ERR_UNAVAILABLE;
+}
+void JavaScript::download_buffer(Vector<uint8_t> p_arr, const String &p_name, const String &p_mime) {
+}
+#endif
diff --git a/platform/web/api/api.h b/platform/web/api/api.h
new file mode 100644
index 0000000000..f073e817d1
--- /dev/null
+++ b/platform/web/api/api.h
@@ -0,0 +1,37 @@
+/*************************************************************************/
+/*  api.h                                                                */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef WEB_API_H
+#define WEB_API_H
+
+void register_web_api();
+void unregister_web_api();
+
+#endif // WEB_API_H
diff --git a/platform/web/api/javascript_singleton.h b/platform/web/api/javascript_singleton.h
new file mode 100644
index 0000000000..e93b0a18a1
--- /dev/null
+++ b/platform/web/api/javascript_singleton.h
@@ -0,0 +1,70 @@
+/*************************************************************************/
+/*  javascript_singleton.h                                               */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef JAVASCRIPT_SINGLETON_H
+#define JAVASCRIPT_SINGLETON_H
+
+#include "core/object/class_db.h"
+#include "core/object/ref_counted.h"
+
+class JavaScriptObject : public RefCounted {
+private:
+	GDCLASS(JavaScriptObject, RefCounted);
+
+protected:
+	virtual bool _set(const StringName &p_name, const Variant &p_value) { return false; }
+	virtual bool _get(const StringName &p_name, Variant &r_ret) const { return false; }
+	virtual void _get_property_list(List<PropertyInfo> *p_list) const {}
+};
+
+class JavaScript : public Object {
+private:
+	GDCLASS(JavaScript, Object);
+
+	static JavaScript *singleton;
+
+protected:
+	static void _bind_methods();
+
+public:
+	Variant eval(const String &p_code, bool p_use_global_exec_context = false);
+	Ref<JavaScriptObject> get_interface(const String &p_interface);
+	Ref<JavaScriptObject> create_callback(const Callable &p_callable);
+	Variant _create_object_bind(const Variant **p_args, int p_argcount, Callable::CallError &r_error);
+	void download_buffer(Vector<uint8_t> p_arr, const String &p_name, const String &p_mime = "application/octet-stream");
+	bool pwa_needs_update() const;
+	Error pwa_update();
+
+	static JavaScript *get_singleton();
+	JavaScript();
+	~JavaScript();
+};
+
+#endif // JAVASCRIPT_SINGLETON_H
diff --git a/platform/web/api/web_tools_editor_plugin.cpp b/platform/web/api/web_tools_editor_plugin.cpp
new file mode 100644
index 0000000000..6f684a73c2
--- /dev/null
+++ b/platform/web/api/web_tools_editor_plugin.cpp
@@ -0,0 +1,157 @@
+/*************************************************************************/
+/*  web_tools_editor_plugin.cpp                                          */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#if defined(TOOLS_ENABLED) && defined(WEB_ENABLED)
+#include "web_tools_editor_plugin.h"
+
+#include "core/config/engine.h"
+#include "core/config/project_settings.h"
+#include "core/io/dir_access.h"
+#include "core/io/file_access.h"
+#include "core/os/time.h"
+#include "editor/editor_node.h"
+
+#include <emscripten/emscripten.h>
+
+// Web functions defined in library_godot_editor_tools.js
+extern "C" {
+extern void godot_js_os_download_buffer(const uint8_t *p_buf, int p_buf_size, const char *p_name, const char *p_mime);
+}
+
+static void _web_editor_init_callback() {
+	EditorNode::get_singleton()->add_editor_plugin(memnew(WebToolsEditorPlugin));
+}
+
+void WebToolsEditorPlugin::initialize() {
+	EditorNode::add_init_callback(_web_editor_init_callback);
+}
+
+WebToolsEditorPlugin::WebToolsEditorPlugin() {
+	add_tool_menu_item("Download Project Source", callable_mp(this, &WebToolsEditorPlugin::_download_zip));
+}
+
+void WebToolsEditorPlugin::_download_zip(Variant p_v) {
+	if (!Engine::get_singleton() || !Engine::get_singleton()->is_editor_hint()) {
+		ERR_PRINT("Downloading the project as a ZIP archive is only available in Editor mode.");
+		return;
+	}
+	String resource_path = ProjectSettings::get_singleton()->get_resource_path();
+
+	Ref<FileAccess> io_fa;
+	zlib_filefunc_def io = zipio_create_io(&io_fa);
+
+	// Name the downloaded ZIP file to contain the project name and download date for easier organization.
+	// Replace characters not allowed (or risky) in Windows file names with safe characters.
+	// In the project name, all invalid characters become an empty string so that a name
+	// like "Platformer 2: Godette's Revenge" becomes "platformer_2-_godette-s_revenge".
+	const String project_name = GLOBAL_GET("application/config/name");
+	const String project_name_safe = project_name.to_lower().replace(" ", "_");
+	const String datetime_safe =
+			Time::get_singleton()->get_datetime_string_from_system(false, true).replace(" ", "_");
+	const String output_name = OS::get_singleton()->get_safe_dir_name(vformat("%s_%s.zip"));
+	const String output_path = String("/tmp").plus_file(output_name);
+
+	zipFile zip = zipOpen2(output_path.utf8().get_data(), APPEND_STATUS_CREATE, nullptr, &io);
+	const String base_path = resource_path.substr(0, resource_path.rfind("/")) + "/";
+	_zip_recursive(resource_path, base_path, zip);
+	zipClose(zip, nullptr);
+	{
+		Ref<FileAccess> f = FileAccess::open(output_path, FileAccess::READ);
+		ERR_FAIL_COND_MSG(f.is_null(), "Unable to create ZIP file.");
+		Vector<uint8_t> buf;
+		buf.resize(f->get_length());
+		f->get_buffer(buf.ptrw(), buf.size());
+		godot_js_os_download_buffer(buf.ptr(), buf.size(), output_name.utf8().get_data(), "application/zip");
+	}
+
+	// Remove the temporary file since it was sent to the user's native filesystem as a download.
+	DirAccess::remove_file_or_error(output_path);
+}
+
+void WebToolsEditorPlugin::_zip_file(String p_path, String p_base_path, zipFile p_zip) {
+	Ref<FileAccess> f = FileAccess::open(p_path, FileAccess::READ);
+	if (f.is_null()) {
+		WARN_PRINT("Unable to open file for zipping: " + p_path);
+		return;
+	}
+	Vector<uint8_t> data;
+	uint64_t len = f->get_length();
+	data.resize(len);
+	f->get_buffer(data.ptrw(), len);
+
+	String path = p_path.replace_first(p_base_path, "");
+	zipOpenNewFileInZip(p_zip,
+			path.utf8().get_data(),
+			nullptr,
+			nullptr,
+			0,
+			nullptr,
+			0,
+			nullptr,
+			Z_DEFLATED,
+			Z_DEFAULT_COMPRESSION);
+	zipWriteInFileInZip(p_zip, data.ptr(), data.size());
+	zipCloseFileInZip(p_zip);
+}
+
+void WebToolsEditorPlugin::_zip_recursive(String p_path, String p_base_path, zipFile p_zip) {
+	Ref<DirAccess> dir = DirAccess::open(p_path);
+	if (dir.is_null()) {
+		WARN_PRINT("Unable to open directory for zipping: " + p_path);
+		return;
+	}
+	dir->list_dir_begin();
+	String cur = dir->get_next();
+	String project_data_dir_name = ProjectSettings::get_singleton()->get_project_data_dir_name();
+	while (!cur.is_empty()) {
+		String cs = p_path.plus_file(cur);
+		if (cur == "." || cur == ".." || cur == project_data_dir_name) {
+			// Skip
+		} else if (dir->current_is_dir()) {
+			String path = cs.replace_first(p_base_path, "") + "/";
+			zipOpenNewFileInZip(p_zip,
+					path.utf8().get_data(),
+					nullptr,
+					nullptr,
+					0,
+					nullptr,
+					0,
+					nullptr,
+					Z_DEFLATED,
+					Z_DEFAULT_COMPRESSION);
+			zipCloseFileInZip(p_zip);
+			_zip_recursive(cs, p_base_path, p_zip);
+		} else {
+			_zip_file(cs, p_base_path, p_zip);
+		}
+		cur = dir->get_next();
+	}
+}
+#endif
diff --git a/platform/web/api/web_tools_editor_plugin.h b/platform/web/api/web_tools_editor_plugin.h
new file mode 100644
index 0000000000..6af1dec3fb
--- /dev/null
+++ b/platform/web/api/web_tools_editor_plugin.h
@@ -0,0 +1,58 @@
+/*************************************************************************/
+/*  web_tools_editor_plugin.h                                            */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef WEB_TOOLS_EDITOR_PLUGIN_H
+#define WEB_TOOLS_EDITOR_PLUGIN_H
+
+#if defined(TOOLS_ENABLED) && defined(WEB_ENABLED)
+#include "core/io/zip_io.h"
+#include "editor/editor_plugin.h"
+
+class WebToolsEditorPlugin : public EditorPlugin {
+	GDCLASS(WebToolsEditorPlugin, EditorPlugin);
+
+private:
+	void _zip_file(String p_path, String p_base_path, zipFile p_zip);
+	void _zip_recursive(String p_path, String p_base_path, zipFile p_zip);
+	void _download_zip(Variant p_v);
+
+public:
+	static void initialize();
+
+	WebToolsEditorPlugin();
+};
+#else
+class WebToolsEditorPlugin {
+public:
+	static void initialize() {}
+};
+#endif
+
+#endif // WEB_TOOLS_EDITOR_PLUGIN_H
diff --git a/platform/web/audio_driver_web.cpp b/platform/web/audio_driver_web.cpp
new file mode 100644
index 0000000000..0e37afc2cc
--- /dev/null
+++ b/platform/web/audio_driver_web.cpp
@@ -0,0 +1,293 @@
+/*************************************************************************/
+/*  audio_driver_web.cpp                                                 */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "audio_driver_web.h"
+
+#include "core/config/project_settings.h"
+
+#include <emscripten.h>
+
+AudioDriverWeb::AudioContext AudioDriverWeb::audio_context;
+
+bool AudioDriverWeb::is_available() {
+	return godot_audio_is_available() != 0;
+}
+
+void AudioDriverWeb::_state_change_callback(int p_state) {
+	AudioDriverWeb::audio_context.state = p_state;
+}
+
+void AudioDriverWeb::_latency_update_callback(float p_latency) {
+	AudioDriverWeb::audio_context.output_latency = p_latency;
+}
+
+void AudioDriverWeb::_audio_driver_process(int p_from, int p_samples) {
+	int32_t *stream_buffer = reinterpret_cast<int32_t *>(output_rb);
+	const int max_samples = memarr_len(output_rb);
+
+	int write_pos = p_from;
+	int to_write = p_samples;
+	if (to_write == 0) {
+		to_write = max_samples;
+	}
+	// High part
+	if (write_pos + to_write > max_samples) {
+		const int samples_high = max_samples - write_pos;
+		audio_server_process(samples_high / channel_count, &stream_buffer[write_pos]);
+		for (int i = write_pos; i < max_samples; i++) {
+			output_rb[i] = float(stream_buffer[i] >> 16) / 32768.f;
+		}
+		to_write -= samples_high;
+		write_pos = 0;
+	}
+	// Leftover
+	audio_server_process(to_write / channel_count, &stream_buffer[write_pos]);
+	for (int i = write_pos; i < write_pos + to_write; i++) {
+		output_rb[i] = float(stream_buffer[i] >> 16) / 32768.f;
+	}
+}
+
+void AudioDriverWeb::_audio_driver_capture(int p_from, int p_samples) {
+	if (get_input_buffer().size() == 0) {
+		return; // Input capture stopped.
+	}
+	const int max_samples = memarr_len(input_rb);
+
+	int read_pos = p_from;
+	int to_read = p_samples;
+	if (to_read == 0) {
+		to_read = max_samples;
+	}
+	// High part
+	if (read_pos + to_read > max_samples) {
+		const int samples_high = max_samples - read_pos;
+		for (int i = read_pos; i < max_samples; i++) {
+			input_buffer_write(int32_t(input_rb[i] * 32768.f) * (1U << 16));
+		}
+		to_read -= samples_high;
+		read_pos = 0;
+	}
+	// Leftover
+	for (int i = read_pos; i < read_pos + to_read; i++) {
+		input_buffer_write(int32_t(input_rb[i] * 32768.f) * (1U << 16));
+	}
+}
+
+Error AudioDriverWeb::init() {
+	int latency = GLOBAL_GET("audio/driver/output_latency");
+	if (!audio_context.inited) {
+		audio_context.mix_rate = GLOBAL_GET("audio/driver/mix_rate");
+		audio_context.channel_count = godot_audio_init(&audio_context.mix_rate, latency, &_state_change_callback, &_latency_update_callback);
+		audio_context.inited = true;
+	}
+	mix_rate = audio_context.mix_rate;
+	channel_count = audio_context.channel_count;
+	buffer_length = closest_power_of_2((latency * mix_rate / 1000));
+	Error err = create(buffer_length, channel_count);
+	if (err != OK) {
+		return err;
+	}
+	if (output_rb) {
+		memdelete_arr(output_rb);
+	}
+	const size_t array_size = buffer_length * (size_t)channel_count;
+	output_rb = memnew_arr(float, array_size);
+	if (!output_rb) {
+		return ERR_OUT_OF_MEMORY;
+	}
+	if (input_rb) {
+		memdelete_arr(input_rb);
+	}
+	input_rb = memnew_arr(float, array_size);
+	if (!input_rb) {
+		return ERR_OUT_OF_MEMORY;
+	}
+	return OK;
+}
+
+void AudioDriverWeb::start() {
+	start(output_rb, memarr_len(output_rb), input_rb, memarr_len(input_rb));
+}
+
+void AudioDriverWeb::resume() {
+	if (audio_context.state == 0) { // 'suspended'
+		godot_audio_resume();
+	}
+}
+
+float AudioDriverWeb::get_latency() {
+	return audio_context.output_latency + (float(buffer_length) / mix_rate);
+}
+
+int AudioDriverWeb::get_mix_rate() const {
+	return mix_rate;
+}
+
+AudioDriver::SpeakerMode AudioDriverWeb::get_speaker_mode() const {
+	return get_speaker_mode_by_total_channels(channel_count);
+}
+
+void AudioDriverWeb::finish() {
+	finish_driver();
+	if (output_rb) {
+		memdelete_arr(output_rb);
+		output_rb = nullptr;
+	}
+	if (input_rb) {
+		memdelete_arr(input_rb);
+		input_rb = nullptr;
+	}
+}
+
+Error AudioDriverWeb::capture_start() {
+	lock();
+	input_buffer_init(buffer_length);
+	unlock();
+	if (godot_audio_capture_start()) {
+		return FAILED;
+	}
+	return OK;
+}
+
+Error AudioDriverWeb::capture_stop() {
+	godot_audio_capture_stop();
+	lock();
+	input_buffer.clear();
+	unlock();
+	return OK;
+}
+
+#ifdef NO_THREADS
+/// ScriptProcessorNode implementation
+AudioDriverScriptProcessor *AudioDriverScriptProcessor::singleton = nullptr;
+
+void AudioDriverScriptProcessor::_process_callback() {
+	AudioDriverScriptProcessor::singleton->_audio_driver_capture();
+	AudioDriverScriptProcessor::singleton->_audio_driver_process();
+}
+
+Error AudioDriverScriptProcessor::create(int &p_buffer_samples, int p_channels) {
+	if (!godot_audio_has_script_processor()) {
+		return ERR_UNAVAILABLE;
+	}
+	return (Error)godot_audio_script_create(&p_buffer_samples, p_channels);
+}
+
+void AudioDriverScriptProcessor::start(float *p_out_buf, int p_out_buf_size, float *p_in_buf, int p_in_buf_size) {
+	godot_audio_script_start(p_in_buf, p_in_buf_size, p_out_buf, p_out_buf_size, &_process_callback);
+}
+
+/// AudioWorkletNode implementation (no threads)
+AudioDriverWorklet *AudioDriverWorklet::singleton = nullptr;
+
+Error AudioDriverWorklet::create(int &p_buffer_size, int p_channels) {
+	if (!godot_audio_has_worklet()) {
+		return ERR_UNAVAILABLE;
+	}
+	return (Error)godot_audio_worklet_create(p_channels);
+}
+
+void AudioDriverWorklet::start(float *p_out_buf, int p_out_buf_size, float *p_in_buf, int p_in_buf_size) {
+	_audio_driver_process();
+	godot_audio_worklet_start_no_threads(p_out_buf, p_out_buf_size, &_process_callback, p_in_buf, p_in_buf_size, &_capture_callback);
+}
+
+void AudioDriverWorklet::_process_callback(int p_pos, int p_samples) {
+	AudioDriverWorklet *driver = AudioDriverWorklet::singleton;
+	driver->_audio_driver_process(p_pos, p_samples);
+}
+
+void AudioDriverWorklet::_capture_callback(int p_pos, int p_samples) {
+	AudioDriverWorklet *driver = AudioDriverWorklet::singleton;
+	driver->_audio_driver_capture(p_pos, p_samples);
+}
+#else
+/// AudioWorkletNode implementation (threads)
+void AudioDriverWorklet::_audio_thread_func(void *p_data) {
+	AudioDriverWorklet *driver = static_cast<AudioDriverWorklet *>(p_data);
+	const int out_samples = memarr_len(driver->get_output_rb());
+	const int in_samples = memarr_len(driver->get_input_rb());
+	int wpos = 0;
+	int to_write = out_samples;
+	int rpos = 0;
+	int to_read = 0;
+	int32_t step = 0;
+	while (!driver->quit) {
+		if (to_read) {
+			driver->lock();
+			driver->_audio_driver_capture(rpos, to_read);
+			godot_audio_worklet_state_add(driver->state, STATE_SAMPLES_IN, -to_read);
+			driver->unlock();
+			rpos += to_read;
+			if (rpos >= in_samples) {
+				rpos -= in_samples;
+			}
+		}
+		if (to_write) {
+			driver->lock();
+			driver->_audio_driver_process(wpos, to_write);
+			godot_audio_worklet_state_add(driver->state, STATE_SAMPLES_OUT, to_write);
+			driver->unlock();
+			wpos += to_write;
+			if (wpos >= out_samples) {
+				wpos -= out_samples;
+			}
+		}
+		step = godot_audio_worklet_state_wait(driver->state, STATE_PROCESS, step, 1);
+		to_write = out_samples - godot_audio_worklet_state_get(driver->state, STATE_SAMPLES_OUT);
+		to_read = godot_audio_worklet_state_get(driver->state, STATE_SAMPLES_IN);
+	}
+}
+
+Error AudioDriverWorklet::create(int &p_buffer_size, int p_channels) {
+	if (!godot_audio_has_worklet()) {
+		return ERR_UNAVAILABLE;
+	}
+	return (Error)godot_audio_worklet_create(p_channels);
+}
+
+void AudioDriverWorklet::start(float *p_out_buf, int p_out_buf_size, float *p_in_buf, int p_in_buf_size) {
+	godot_audio_worklet_start(p_in_buf, p_in_buf_size, p_out_buf, p_out_buf_size, state);
+	thread.start(_audio_thread_func, this);
+}
+
+void AudioDriverWorklet::lock() {
+	mutex.lock();
+}
+
+void AudioDriverWorklet::unlock() {
+	mutex.unlock();
+}
+
+void AudioDriverWorklet::finish_driver() {
+	quit = true; // Ask thread to quit.
+	thread.wait_to_finish();
+}
+#endif
diff --git a/platform/web/audio_driver_web.h b/platform/web/audio_driver_web.h
new file mode 100644
index 0000000000..dfce277c0c
--- /dev/null
+++ b/platform/web/audio_driver_web.h
@@ -0,0 +1,161 @@
+/*************************************************************************/
+/*  audio_driver_web.h                                                   */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef AUDIO_DRIVER_WEB_H
+#define AUDIO_DRIVER_WEB_H
+
+#include "core/os/mutex.h"
+#include "core/os/thread.h"
+#include "servers/audio_server.h"
+
+#include "godot_audio.h"
+
+class AudioDriverWeb : public AudioDriver {
+private:
+	struct AudioContext {
+		bool inited = false;
+		float output_latency = 0.0;
+		int state = -1;
+		int channel_count = 0;
+		int mix_rate = 0;
+	};
+	static AudioContext audio_context;
+
+	float *output_rb = nullptr;
+	float *input_rb = nullptr;
+
+	int buffer_length = 0;
+	int mix_rate = 0;
+	int channel_count = 0;
+
+	static void _state_change_callback(int p_state);
+	static void _latency_update_callback(float p_latency);
+
+	static AudioDriverWeb *singleton;
+
+protected:
+	void _audio_driver_process(int p_from = 0, int p_samples = 0);
+	void _audio_driver_capture(int p_from = 0, int p_samples = 0);
+	float *get_output_rb() const { return output_rb; }
+	float *get_input_rb() const { return input_rb; }
+
+	virtual Error create(int &p_buffer_samples, int p_channels) = 0;
+	virtual void start(float *p_out_buf, int p_out_buf_size, float *p_in_buf, int p_in_buf_size) = 0;
+	virtual void finish_driver() {}
+
+public:
+	static bool is_available();
+
+	virtual Error init() final;
+	virtual void start() final;
+	virtual void finish() final;
+
+	virtual float get_latency() override;
+	virtual int get_mix_rate() const override;
+	virtual SpeakerMode get_speaker_mode() const override;
+
+	virtual Error capture_start() override;
+	virtual Error capture_stop() override;
+
+	static void resume();
+
+	AudioDriverWeb() {}
+};
+
+#ifdef NO_THREADS
+class AudioDriverScriptProcessor : public AudioDriverWeb {
+private:
+	static void _process_callback();
+
+	static AudioDriverScriptProcessor *singleton;
+
+protected:
+	Error create(int &p_buffer_samples, int p_channels) override;
+	void start(float *p_out_buf, int p_out_buf_size, float *p_in_buf, int p_in_buf_size) override;
+
+public:
+	virtual const char *get_name() const override { return "ScriptProcessor"; }
+
+	virtual void lock() override {}
+	virtual void unlock() override {}
+
+	AudioDriverScriptProcessor() { singleton = this; }
+};
+
+class AudioDriverWorklet : public AudioDriverWeb {
+private:
+	static void _process_callback(int p_pos, int p_samples);
+	static void _capture_callback(int p_pos, int p_samples);
+
+	static AudioDriverWorklet *singleton;
+
+protected:
+	virtual Error create(int &p_buffer_size, int p_output_channels) override;
+	virtual void start(float *p_out_buf, int p_out_buf_size, float *p_in_buf, int p_in_buf_size) override;
+
+public:
+	virtual const char *get_name() const override { return "AudioWorklet"; }
+
+	virtual void lock() override {}
+	virtual void unlock() override {}
+
+	AudioDriverWorklet() { singleton = this; }
+};
+#else
+class AudioDriverWorklet : public AudioDriverWeb {
+private:
+	enum {
+		STATE_LOCK,
+		STATE_PROCESS,
+		STATE_SAMPLES_IN,
+		STATE_SAMPLES_OUT,
+		STATE_MAX,
+	};
+	Mutex mutex;
+	Thread thread;
+	bool quit = false;
+	int32_t state[STATE_MAX] = { 0 };
+
+	static void _audio_thread_func(void *p_data);
+
+protected:
+	virtual Error create(int &p_buffer_size, int p_output_channels) override;
+	virtual void start(float *p_out_buf, int p_out_buf_size, float *p_in_buf, int p_in_buf_size) override;
+	virtual void finish_driver() override;
+
+public:
+	virtual const char *get_name() const override { return "AudioWorklet"; }
+
+	void lock() override;
+	void unlock() override;
+};
+#endif
+
+#endif // AUDIO_DRIVER_WEB_H
diff --git a/platform/web/detect.py b/platform/web/detect.py
new file mode 100644
index 0000000000..ae0ff2c4ea
--- /dev/null
+++ b/platform/web/detect.py
@@ -0,0 +1,243 @@
+import os
+import sys
+
+from emscripten_helpers import (
+    run_closure_compiler,
+    create_engine_file,
+    add_js_libraries,
+    add_js_pre,
+    add_js_externs,
+    create_template_zip,
+)
+from methods import get_compiler_version
+from SCons.Util import WhereIs
+
+
+def is_active():
+    return True
+
+
+def get_name():
+    return "Web"
+
+
+def can_build():
+    return WhereIs("emcc") is not None
+
+
+def get_opts():
+    from SCons.Variables import BoolVariable
+
+    return [
+        ("initial_memory", "Initial WASM memory (in MiB)", 32),
+        BoolVariable("use_assertions", "Use Emscripten runtime assertions", False),
+        BoolVariable("use_thinlto", "Use ThinLTO", False),
+        BoolVariable("use_ubsan", "Use Emscripten undefined behavior sanitizer (UBSAN)", False),
+        BoolVariable("use_asan", "Use Emscripten address sanitizer (ASAN)", False),
+        BoolVariable("use_lsan", "Use Emscripten leak sanitizer (LSAN)", False),
+        BoolVariable("use_safe_heap", "Use Emscripten SAFE_HEAP sanitizer", False),
+        # eval() can be a security concern, so it can be disabled.
+        BoolVariable("javascript_eval", "Enable JavaScript eval interface", True),
+        BoolVariable("threads_enabled", "Enable WebAssembly Threads support (limited browser support)", True),
+        BoolVariable("gdnative_enabled", "Enable WebAssembly GDNative support (produces bigger binaries)", False),
+        BoolVariable("use_closure_compiler", "Use closure compiler to minimize JavaScript code", False),
+    ]
+
+
+def get_flags():
+    return [
+        ("arch", "wasm32"),
+        ("tools", False),
+        ("builtin_pcre2_with_jit", False),
+        ("vulkan", False),
+    ]
+
+
+def configure(env):
+    # Validate arch.
+    supported_arches = ["wasm32"]
+    if env["arch"] not in supported_arches:
+        print(
+            'Unsupported CPU architecture "%s" for iOS. Supported architectures are: %s.'
+            % (env["arch"], ", ".join(supported_arches))
+        )
+        sys.exit()
+
+    try:
+        env["initial_memory"] = int(env["initial_memory"])
+    except Exception:
+        print("Initial memory must be a valid integer")
+        sys.exit(255)
+
+    ## Build type
+    if env["target"].startswith("release"):
+        # Use -Os to prioritize optimizing for reduced file size. This is
+        # particularly valuable for the web platform because it directly
+        # decreases download time.
+        # -Os reduces file size by around 5 MiB over -O3. -Oz only saves about
+        # 100 KiB over -Os, which does not justify the negative impact on
+        # run-time performance.
+        if env["optimize"] != "none":
+            env.Append(CCFLAGS=["-Os"])
+            env.Append(LINKFLAGS=["-Os"])
+
+        if env["target"] == "release_debug":
+            # Retain function names for backtraces at the cost of file size.
+            env.Append(LINKFLAGS=["--profiling-funcs"])
+    else:  # "debug"
+        env.Append(CCFLAGS=["-O1", "-g"])
+        env.Append(LINKFLAGS=["-O1", "-g"])
+        env["use_assertions"] = True
+
+    if env["use_assertions"]:
+        env.Append(LINKFLAGS=["-s", "ASSERTIONS=1"])
+
+    if env["tools"]:
+        if not env["threads_enabled"]:
+            print('Note: Forcing "threads_enabled=yes" as it is required for the web editor.')
+            env["threads_enabled"] = "yes"
+        if env["initial_memory"] < 64:
+            print('Note: Forcing "initial_memory=64" as it is required for the web editor.')
+            env["initial_memory"] = 64
+        env.Append(CCFLAGS=["-frtti"])
+    elif env["builtin_icu"]:
+        env.Append(CCFLAGS=["-fno-exceptions", "-frtti"])
+    else:
+        # Disable exceptions and rtti on non-tools (template) builds
+        # These flags help keep the file size down.
+        env.Append(CCFLAGS=["-fno-exceptions", "-fno-rtti"])
+        # Don't use dynamic_cast, necessary with no-rtti.
+        env.Append(CPPDEFINES=["NO_SAFE_CAST"])
+
+    env.Append(LINKFLAGS=["-s", "INITIAL_MEMORY=%sMB" % env["initial_memory"]])
+
+    ## Copy env variables.
+    env["ENV"] = os.environ
+
+    # LTO
+    if env["use_thinlto"]:
+        env.Append(CCFLAGS=["-flto=thin"])
+        env.Append(LINKFLAGS=["-flto=thin"])
+    elif env["use_lto"]:
+        env.Append(CCFLAGS=["-flto=full"])
+        env.Append(LINKFLAGS=["-flto=full"])
+
+    # Sanitizers
+    if env["use_ubsan"]:
+        env.Append(CCFLAGS=["-fsanitize=undefined"])
+        env.Append(LINKFLAGS=["-fsanitize=undefined"])
+    if env["use_asan"]:
+        env.Append(CCFLAGS=["-fsanitize=address"])
+        env.Append(LINKFLAGS=["-fsanitize=address"])
+    if env["use_lsan"]:
+        env.Append(CCFLAGS=["-fsanitize=leak"])
+        env.Append(LINKFLAGS=["-fsanitize=leak"])
+    if env["use_safe_heap"]:
+        env.Append(LINKFLAGS=["-s", "SAFE_HEAP=1"])
+
+    # Closure compiler
+    if env["use_closure_compiler"]:
+        # For emscripten support code.
+        env.Append(LINKFLAGS=["--closure", "1"])
+        # Register builder for our Engine files
+        jscc = env.Builder(generator=run_closure_compiler, suffix=".cc.js", src_suffix=".js")
+        env.Append(BUILDERS={"BuildJS": jscc})
+
+    # Add helper method for adding libraries, externs, pre-js.
+    env["JS_LIBS"] = []
+    env["JS_PRE"] = []
+    env["JS_EXTERNS"] = []
+    env.AddMethod(add_js_libraries, "AddJSLibraries")
+    env.AddMethod(add_js_pre, "AddJSPre")
+    env.AddMethod(add_js_externs, "AddJSExterns")
+
+    # Add method that joins/compiles our Engine files.
+    env.AddMethod(create_engine_file, "CreateEngineFile")
+
+    # Add method for creating the final zip file
+    env.AddMethod(create_template_zip, "CreateTemplateZip")
+
+    # Closure compiler extern and support for ecmascript specs (const, let, etc).
+    env["ENV"]["EMCC_CLOSURE_ARGS"] = "--language_in ECMASCRIPT6"
+
+    env["CC"] = "emcc"
+    env["CXX"] = "em++"
+
+    env["AR"] = "emar"
+    env["RANLIB"] = "emranlib"
+
+    # Use TempFileMunge since some AR invocations are too long for cmd.exe.
+    # Use POSIX-style paths, required with TempFileMunge.
+    env["ARCOM_POSIX"] = env["ARCOM"].replace("$TARGET", "$TARGET.posix").replace("$SOURCES", "$SOURCES.posix")
+    env["ARCOM"] = "${TEMPFILE(ARCOM_POSIX)}"
+
+    # All intermediate files are just LLVM bitcode.
+    env["OBJPREFIX"] = ""
+    env["OBJSUFFIX"] = ".bc"
+    env["PROGPREFIX"] = ""
+    # Program() output consists of multiple files, so specify suffixes manually at builder.
+    env["PROGSUFFIX"] = ""
+    env["LIBPREFIX"] = "lib"
+    env["LIBSUFFIX"] = ".a"
+    env["LIBPREFIXES"] = ["$LIBPREFIX"]
+    env["LIBSUFFIXES"] = ["$LIBSUFFIX"]
+
+    env.Prepend(CPPPATH=["#platform/web"])
+    env.Append(CPPDEFINES=["WEB_ENABLED", "UNIX_ENABLED"])
+
+    if env["opengl3"]:
+        env.AppendUnique(CPPDEFINES=["GLES3_ENABLED"])
+        # This setting just makes WebGL 2 APIs available, it does NOT disable WebGL 1.
+        env.Append(LINKFLAGS=["-s", "USE_WEBGL2=1"])
+        # Allow use to take control of swapping WebGL buffers.
+        env.Append(LINKFLAGS=["-s", "OFFSCREEN_FRAMEBUFFER=1"])
+
+    if env["javascript_eval"]:
+        env.Append(CPPDEFINES=["JAVASCRIPT_EVAL_ENABLED"])
+
+    # Thread support (via SharedArrayBuffer).
+    if env["threads_enabled"]:
+        env.Append(CPPDEFINES=["PTHREAD_NO_RENAME"])
+        env.Append(CCFLAGS=["-s", "USE_PTHREADS=1"])
+        env.Append(LINKFLAGS=["-s", "USE_PTHREADS=1"])
+        env.Append(LINKFLAGS=["-s", "PTHREAD_POOL_SIZE=8"])
+        env.Append(LINKFLAGS=["-s", "WASM_MEM_MAX=2048MB"])
+        env.extra_suffix = ".threads" + env.extra_suffix
+    else:
+        env.Append(CPPDEFINES=["NO_THREADS"])
+
+    if env["gdnative_enabled"]:
+        cc_version = get_compiler_version(env)
+        cc_semver = (int(cc_version["major"]), int(cc_version["minor"]), int(cc_version["patch"]))
+        if cc_semver < (2, 0, 10):
+            print("GDNative support requires emscripten >= 2.0.10, detected: %s.%s.%s" % cc_semver)
+            sys.exit(255)
+
+        if env["threads_enabled"] and cc_semver < (3, 1, 14):
+            print("Threads and GDNative requires emscripten >= 3.1.14, detected: %s.%s.%s" % cc_semver)
+            sys.exit(255)
+        env.Append(CCFLAGS=["-s", "RELOCATABLE=1"])
+        env.Append(LINKFLAGS=["-s", "RELOCATABLE=1"])
+        # Weak symbols are broken upstream: https://github.com/emscripten-core/emscripten/issues/12819
+        env.Append(CPPDEFINES=["ZSTD_HAVE_WEAK_SYMBOLS=0"])
+        env.extra_suffix = ".gdnative" + env.extra_suffix
+
+    # Reduce code size by generating less support code (e.g. skip NodeJS support).
+    env.Append(LINKFLAGS=["-s", "ENVIRONMENT=web,worker"])
+
+    # Wrap the JavaScript support code around a closure named Godot.
+    env.Append(LINKFLAGS=["-s", "MODULARIZE=1", "-s", "EXPORT_NAME='Godot'"])
+
+    # Allow increasing memory buffer size during runtime. This is efficient
+    # when using WebAssembly (in comparison to asm.js) and works well for
+    # us since we don't know requirements at compile-time.
+    env.Append(LINKFLAGS=["-s", "ALLOW_MEMORY_GROWTH=1"])
+
+    # Do not call main immediately when the support code is ready.
+    env.Append(LINKFLAGS=["-s", "INVOKE_RUN=0"])
+
+    # callMain for manual start, cwrap for the mono version.
+    env.Append(LINKFLAGS=["-s", "EXPORTED_RUNTIME_METHODS=['callMain','cwrap']"])
+
+    # Add code that allow exiting runtime.
+    env.Append(LINKFLAGS=["-s", "EXIT_RUNTIME=1"])
diff --git a/platform/web/display_server_web.cpp b/platform/web/display_server_web.cpp
new file mode 100644
index 0000000000..b36f9d14a4
--- /dev/null
+++ b/platform/web/display_server_web.cpp
@@ -0,0 +1,1060 @@
+/*************************************************************************/
+/*  display_server_web.cpp                                               */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "display_server_web.h"
+
+#ifdef GLES3_ENABLED
+#include "drivers/gles3/rasterizer_gles3.h"
+#endif
+#include "platform/web/os_web.h"
+#include "servers/rendering/dummy/rasterizer_dummy.h"
+
+#include <emscripten.h>
+#include <png.h>
+
+#include "dom_keys.inc"
+#include "godot_js.h"
+
+#define DOM_BUTTON_LEFT 0
+#define DOM_BUTTON_MIDDLE 1
+#define DOM_BUTTON_RIGHT 2
+#define DOM_BUTTON_XBUTTON1 3
+#define DOM_BUTTON_XBUTTON2 4
+
+DisplayServerWeb *DisplayServerWeb::get_singleton() {
+	return static_cast<DisplayServerWeb *>(DisplayServer::get_singleton());
+}
+
+// Window (canvas)
+bool DisplayServerWeb::check_size_force_redraw() {
+	return godot_js_display_size_update() != 0;
+}
+
+void DisplayServerWeb::fullscreen_change_callback(int p_fullscreen) {
+	DisplayServerWeb *display = get_singleton();
+	if (p_fullscreen) {
+		display->window_mode = WINDOW_MODE_FULLSCREEN;
+	} else {
+		display->window_mode = WINDOW_MODE_WINDOWED;
+	}
+}
+
+// Drag and drop callback.
+void DisplayServerWeb::drop_files_js_callback(char **p_filev, int p_filec) {
+	DisplayServerWeb *ds = get_singleton();
+	if (!ds) {
+		ERR_FAIL_MSG("Unable to drop files because the DisplayServer is not active");
+	}
+	if (ds->drop_files_callback.is_null()) {
+		return;
+	}
+	Vector<String> files;
+	for (int i = 0; i < p_filec; i++) {
+		files.push_back(String::utf8(p_filev[i]));
+	}
+	Variant v = files;
+	Variant *vp = &v;
+	Variant ret;
+	Callable::CallError ce;
+	ds->drop_files_callback.callp((const Variant **)&vp, 1, ret, ce);
+}
+
+// Web quit request callback.
+void DisplayServerWeb::request_quit_callback() {
+	DisplayServerWeb *ds = get_singleton();
+	if (ds && !ds->window_event_callback.is_null()) {
+		Variant event = int(DisplayServer::WINDOW_EVENT_CLOSE_REQUEST);
+		Variant *eventp = &event;
+		Variant ret;
+		Callable::CallError ce;
+		ds->window_event_callback.callp((const Variant **)&eventp, 1, ret, ce);
+	}
+}
+
+// Keys
+
+void DisplayServerWeb::dom2godot_mod(Ref<InputEventWithModifiers> ev, int p_mod) {
+	ev->set_shift_pressed(p_mod & 1);
+	ev->set_alt_pressed(p_mod & 2);
+	ev->set_ctrl_pressed(p_mod & 4);
+	ev->set_meta_pressed(p_mod & 8);
+}
+
+void DisplayServerWeb::key_callback(int p_pressed, int p_repeat, int p_modifiers) {
+	DisplayServerWeb *ds = get_singleton();
+	JSKeyEvent &key_event = ds->key_event;
+	// Resume audio context after input in case autoplay was denied.
+	OS_Web::get_singleton()->resume_audio();
+
+	Ref<InputEventKey> ev;
+	ev.instantiate();
+	ev->set_echo(p_repeat);
+	ev->set_keycode(dom_code2godot_scancode(key_event.code, key_event.key, false));
+	ev->set_physical_keycode(dom_code2godot_scancode(key_event.code, key_event.key, true));
+	ev->set_pressed(p_pressed);
+	dom2godot_mod(ev, p_modifiers);
+
+	String unicode = String::utf8(key_event.key);
+	if (unicode.length() == 1) {
+		ev->set_unicode(unicode[0]);
+	}
+	Input::get_singleton()->parse_input_event(ev);
+
+	// Make sure to flush all events so we can call restricted APIs inside the event.
+	Input::get_singleton()->flush_buffered_events();
+}
+
+// Mouse
+
+int DisplayServerWeb::mouse_button_callback(int p_pressed, int p_button, double p_x, double p_y, int p_modifiers) {
+	DisplayServerWeb *ds = get_singleton();
+
+	Point2 pos(p_x, p_y);
+	Ref<InputEventMouseButton> ev;
+	ev.instantiate();
+	ev->set_position(pos);
+	ev->set_global_position(pos);
+	ev->set_pressed(p_pressed);
+	dom2godot_mod(ev, p_modifiers);
+
+	switch (p_button) {
+		case DOM_BUTTON_LEFT:
+			ev->set_button_index(MouseButton::LEFT);
+			break;
+		case DOM_BUTTON_MIDDLE:
+			ev->set_button_index(MouseButton::MIDDLE);
+			break;
+		case DOM_BUTTON_RIGHT:
+			ev->set_button_index(MouseButton::RIGHT);
+			break;
+		case DOM_BUTTON_XBUTTON1:
+			ev->set_button_index(MouseButton::MB_XBUTTON1);
+			break;
+		case DOM_BUTTON_XBUTTON2:
+			ev->set_button_index(MouseButton::MB_XBUTTON2);
+			break;
+		default:
+			return false;
+	}
+
+	if (p_pressed) {
+		uint64_t diff = (OS::get_singleton()->get_ticks_usec() / 1000) - ds->last_click_ms;
+
+		if (ev->get_button_index() == ds->last_click_button_index) {
+			if (diff < 400 && Point2(ds->last_click_pos).distance_to(ev->get_position()) < 5) {
+				ds->last_click_ms = 0;
+				ds->last_click_pos = Point2(-100, -100);
+				ds->last_click_button_index = MouseButton::NONE;
+				ev->set_double_click(true);
+			}
+
+		} else {
+			ds->last_click_button_index = ev->get_button_index();
+		}
+
+		if (!ev->is_double_click()) {
+			ds->last_click_ms += diff;
+			ds->last_click_pos = ev->get_position();
+		}
+	}
+
+	MouseButton mask = Input::get_singleton()->get_mouse_button_mask();
+	MouseButton button_flag = mouse_button_to_mask(ev->get_button_index());
+	if (ev->is_pressed()) {
+		mask |= button_flag;
+	} else if ((mask & button_flag) != MouseButton::NONE) {
+		mask &= ~button_flag;
+	} else {
+		// Received release event, but press was outside the canvas, so ignore.
+		return false;
+	}
+	ev->set_button_mask(mask);
+
+	Input::get_singleton()->parse_input_event(ev);
+	// Resume audio context after input in case autoplay was denied.
+	OS_Web::get_singleton()->resume_audio();
+
+	// Make sure to flush all events so we can call restricted APIs inside the event.
+	Input::get_singleton()->flush_buffered_events();
+
+	// Prevent multi-click text selection and wheel-click scrolling anchor.
+	// Context menu is prevented through contextmenu event.
+	return true;
+}
+
+void DisplayServerWeb::mouse_move_callback(double p_x, double p_y, double p_rel_x, double p_rel_y, int p_modifiers) {
+	MouseButton input_mask = Input::get_singleton()->get_mouse_button_mask();
+	// For motion outside the canvas, only read mouse movement if dragging
+	// started inside the canvas; imitating desktop app behaviour.
+	if (!get_singleton()->cursor_inside_canvas && input_mask == MouseButton::NONE) {
+		return;
+	}
+
+	Point2 pos(p_x, p_y);
+	Ref<InputEventMouseMotion> ev;
+	ev.instantiate();
+	dom2godot_mod(ev, p_modifiers);
+	ev->set_button_mask(input_mask);
+
+	ev->set_position(pos);
+	ev->set_global_position(pos);
+
+	ev->set_relative(Vector2(p_rel_x, p_rel_y));
+	ev->set_velocity(Input::get_singleton()->get_last_mouse_velocity());
+
+	Input::get_singleton()->parse_input_event(ev);
+}
+
+// Cursor
+const char *DisplayServerWeb::godot2dom_cursor(DisplayServer::CursorShape p_shape) {
+	switch (p_shape) {
+		case DisplayServer::CURSOR_ARROW:
+			return "default";
+		case DisplayServer::CURSOR_IBEAM:
+			return "text";
+		case DisplayServer::CURSOR_POINTING_HAND:
+			return "pointer";
+		case DisplayServer::CURSOR_CROSS:
+			return "crosshair";
+		case DisplayServer::CURSOR_WAIT:
+			return "wait";
+		case DisplayServer::CURSOR_BUSY:
+			return "progress";
+		case DisplayServer::CURSOR_DRAG:
+			return "grab";
+		case DisplayServer::CURSOR_CAN_DROP:
+			return "grabbing";
+		case DisplayServer::CURSOR_FORBIDDEN:
+			return "no-drop";
+		case DisplayServer::CURSOR_VSIZE:
+			return "ns-resize";
+		case DisplayServer::CURSOR_HSIZE:
+			return "ew-resize";
+		case DisplayServer::CURSOR_BDIAGSIZE:
+			return "nesw-resize";
+		case DisplayServer::CURSOR_FDIAGSIZE:
+			return "nwse-resize";
+		case DisplayServer::CURSOR_MOVE:
+			return "move";
+		case DisplayServer::CURSOR_VSPLIT:
+			return "row-resize";
+		case DisplayServer::CURSOR_HSPLIT:
+			return "col-resize";
+		case DisplayServer::CURSOR_HELP:
+			return "help";
+		default:
+			return "default";
+	}
+}
+
+bool DisplayServerWeb::tts_is_speaking() const {
+	return godot_js_tts_is_speaking();
+}
+
+bool DisplayServerWeb::tts_is_paused() const {
+	return godot_js_tts_is_paused();
+}
+
+void DisplayServerWeb::update_voices_callback(int p_size, const char **p_voice) {
+	get_singleton()->voices.clear();
+	for (int i = 0; i < p_size; i++) {
+		Vector<String> tokens = String::utf8(p_voice[i]).split(";", true, 2);
+		if (tokens.size() == 2) {
+			Dictionary voice_d;
+			voice_d["name"] = tokens[1];
+			voice_d["id"] = tokens[1];
+			voice_d["language"] = tokens[0];
+			get_singleton()->voices.push_back(voice_d);
+		}
+	}
+}
+
+TypedArray<Dictionary> DisplayServerWeb::tts_get_voices() const {
+	godot_js_tts_get_voices(update_voices_callback);
+	return voices;
+}
+
+void DisplayServerWeb::tts_speak(const String &p_text, const String &p_voice, int p_volume, float p_pitch, float p_rate, int p_utterance_id, bool p_interrupt) {
+	if (p_interrupt) {
+		tts_stop();
+	}
+
+	if (p_text.is_empty()) {
+		tts_post_utterance_event(DisplayServer::TTS_UTTERANCE_CANCELED, p_utterance_id);
+		return;
+	}
+
+	CharString string = p_text.utf8();
+	utterance_ids[p_utterance_id] = string;
+
+	godot_js_tts_speak(string.get_data(), p_voice.utf8().get_data(), CLAMP(p_volume, 0, 100), CLAMP(p_pitch, 0.f, 2.f), CLAMP(p_rate, 0.1f, 10.f), p_utterance_id, DisplayServerWeb::_js_utterance_callback);
+}
+
+void DisplayServerWeb::tts_pause() {
+	godot_js_tts_pause();
+}
+
+void DisplayServerWeb::tts_resume() {
+	godot_js_tts_resume();
+}
+
+void DisplayServerWeb::tts_stop() {
+	for (const KeyValue<int, CharString> &E : utterance_ids) {
+		tts_post_utterance_event(DisplayServer::TTS_UTTERANCE_CANCELED, E.key);
+	}
+	utterance_ids.clear();
+	godot_js_tts_stop();
+}
+
+void DisplayServerWeb::_js_utterance_callback(int p_event, int p_id, int p_pos) {
+	DisplayServerWeb *ds = (DisplayServerWeb *)DisplayServer::get_singleton();
+	if (ds->utterance_ids.has(p_id)) {
+		int pos = 0;
+		if ((TTSUtteranceEvent)p_event == DisplayServer::TTS_UTTERANCE_BOUNDARY) {
+			// Convert position from UTF-8 to UTF-32.
+			const CharString &string = ds->utterance_ids[p_id];
+			for (int i = 0; i < MIN(p_pos, string.length()); i++) {
+				uint8_t c = string[i];
+				if ((c & 0xe0) == 0xc0) {
+					i += 1;
+				} else if ((c & 0xf0) == 0xe0) {
+					i += 2;
+				} else if ((c & 0xf8) == 0xf0) {
+					i += 3;
+				}
+				pos++;
+			}
+		} else if ((TTSUtteranceEvent)p_event != DisplayServer::TTS_UTTERANCE_STARTED) {
+			ds->utterance_ids.erase(p_id);
+		}
+		ds->tts_post_utterance_event((TTSUtteranceEvent)p_event, p_id, pos);
+	}
+}
+
+void DisplayServerWeb::cursor_set_shape(CursorShape p_shape) {
+	ERR_FAIL_INDEX(p_shape, CURSOR_MAX);
+	if (cursor_shape == p_shape) {
+		return;
+	}
+	cursor_shape = p_shape;
+	godot_js_display_cursor_set_shape(godot2dom_cursor(cursor_shape));
+}
+
+DisplayServer::CursorShape DisplayServerWeb::cursor_get_shape() const {
+	return cursor_shape;
+}
+
+void DisplayServerWeb::cursor_set_custom_image(const Ref<Resource> &p_cursor, CursorShape p_shape, const Vector2 &p_hotspot) {
+	if (p_cursor.is_valid()) {
+		Ref<Texture2D> texture = p_cursor;
+		Ref<AtlasTexture> atlas_texture = p_cursor;
+		Ref<Image> image;
+		Size2 texture_size;
+		Rect2 atlas_rect;
+
+		if (texture.is_valid()) {
+			image = texture->get_image();
+		}
+
+		if (!image.is_valid() && atlas_texture.is_valid()) {
+			texture = atlas_texture->get_atlas();
+
+			atlas_rect.size.width = texture->get_width();
+			atlas_rect.size.height = texture->get_height();
+			atlas_rect.position.x = atlas_texture->get_region().position.x;
+			atlas_rect.position.y = atlas_texture->get_region().position.y;
+
+			texture_size.width = atlas_texture->get_region().size.x;
+			texture_size.height = atlas_texture->get_region().size.y;
+		} else if (image.is_valid()) {
+			texture_size.width = texture->get_width();
+			texture_size.height = texture->get_height();
+		}
+
+		ERR_FAIL_COND(!texture.is_valid());
+		ERR_FAIL_COND(p_hotspot.x < 0 || p_hotspot.y < 0);
+		ERR_FAIL_COND(texture_size.width > 256 || texture_size.height > 256);
+		ERR_FAIL_COND(p_hotspot.x > texture_size.width || p_hotspot.y > texture_size.height);
+
+		image = texture->get_image();
+
+		ERR_FAIL_COND(!image.is_valid());
+
+		image = image->duplicate();
+
+		if (atlas_texture.is_valid()) {
+			image->crop_from_point(
+					atlas_rect.position.x,
+					atlas_rect.position.y,
+					texture_size.width,
+					texture_size.height);
+		}
+
+		if (image->get_format() != Image::FORMAT_RGBA8) {
+			image->convert(Image::FORMAT_RGBA8);
+		}
+
+		png_image png_meta;
+		memset(&png_meta, 0, sizeof png_meta);
+		png_meta.version = PNG_IMAGE_VERSION;
+		png_meta.width = texture_size.width;
+		png_meta.height = texture_size.height;
+		png_meta.format = PNG_FORMAT_RGBA;
+
+		PackedByteArray png;
+		size_t len;
+		PackedByteArray data = image->get_data();
+		ERR_FAIL_COND(!png_image_write_get_memory_size(png_meta, len, 0, data.ptr(), 0, nullptr));
+
+		png.resize(len);
+		ERR_FAIL_COND(!png_image_write_to_memory(&png_meta, png.ptrw(), &len, 0, data.ptr(), 0, nullptr));
+
+		godot_js_display_cursor_set_custom_shape(godot2dom_cursor(p_shape), png.ptr(), len, p_hotspot.x, p_hotspot.y);
+
+	} else {
+		godot_js_display_cursor_set_custom_shape(godot2dom_cursor(p_shape), nullptr, 0, 0, 0);
+	}
+
+	cursor_set_shape(cursor_shape);
+}
+
+// Mouse mode
+void DisplayServerWeb::mouse_set_mode(MouseMode p_mode) {
+	ERR_FAIL_COND_MSG(p_mode == MOUSE_MODE_CONFINED || p_mode == MOUSE_MODE_CONFINED_HIDDEN, "MOUSE_MODE_CONFINED is not supported for the Web platform.");
+	if (p_mode == mouse_get_mode()) {
+		return;
+	}
+
+	if (p_mode == MOUSE_MODE_VISIBLE) {
+		godot_js_display_cursor_set_visible(1);
+		godot_js_display_cursor_lock_set(0);
+
+	} else if (p_mode == MOUSE_MODE_HIDDEN) {
+		godot_js_display_cursor_set_visible(0);
+		godot_js_display_cursor_lock_set(0);
+
+	} else if (p_mode == MOUSE_MODE_CAPTURED) {
+		godot_js_display_cursor_set_visible(1);
+		godot_js_display_cursor_lock_set(1);
+	}
+}
+
+DisplayServer::MouseMode DisplayServerWeb::mouse_get_mode() const {
+	if (godot_js_display_cursor_is_hidden()) {
+		return MOUSE_MODE_HIDDEN;
+	}
+
+	if (godot_js_display_cursor_is_locked()) {
+		return MOUSE_MODE_CAPTURED;
+	}
+	return MOUSE_MODE_VISIBLE;
+}
+
+Point2i DisplayServerWeb::mouse_get_position() const {
+	return Input::get_singleton()->get_mouse_position();
+}
+
+// Wheel
+int DisplayServerWeb::mouse_wheel_callback(double p_delta_x, double p_delta_y) {
+	if (!godot_js_display_canvas_is_focused()) {
+		if (get_singleton()->cursor_inside_canvas) {
+			godot_js_display_canvas_focus();
+		} else {
+			return false;
+		}
+	}
+
+	Input *input = Input::get_singleton();
+	Ref<InputEventMouseButton> ev;
+	ev.instantiate();
+	ev->set_position(input->get_mouse_position());
+	ev->set_global_position(ev->get_position());
+
+	ev->set_shift_pressed(input->is_key_pressed(Key::SHIFT));
+	ev->set_alt_pressed(input->is_key_pressed(Key::ALT));
+	ev->set_ctrl_pressed(input->is_key_pressed(Key::CTRL));
+	ev->set_meta_pressed(input->is_key_pressed(Key::META));
+
+	if (p_delta_y < 0) {
+		ev->set_button_index(MouseButton::WHEEL_UP);
+	} else if (p_delta_y > 0) {
+		ev->set_button_index(MouseButton::WHEEL_DOWN);
+	} else if (p_delta_x > 0) {
+		ev->set_button_index(MouseButton::WHEEL_LEFT);
+	} else if (p_delta_x < 0) {
+		ev->set_button_index(MouseButton::WHEEL_RIGHT);
+	} else {
+		return false;
+	}
+
+	// Different browsers give wildly different delta values, and we can't
+	// interpret deltaMode, so use default value for wheel events' factor.
+
+	MouseButton button_flag = mouse_button_to_mask(ev->get_button_index());
+
+	ev->set_pressed(true);
+	ev->set_button_mask(input->get_mouse_button_mask() | button_flag);
+	input->parse_input_event(ev);
+
+	Ref<InputEventMouseButton> release = ev->duplicate();
+	release->set_pressed(false);
+	release->set_button_mask(MouseButton(input->get_mouse_button_mask() & ~button_flag));
+	input->parse_input_event(release);
+
+	return true;
+}
+
+// Touch
+void DisplayServerWeb::touch_callback(int p_type, int p_count) {
+	DisplayServerWeb *ds = get_singleton();
+
+	const JSTouchEvent &touch_event = ds->touch_event;
+	for (int i = 0; i < p_count; i++) {
+		Point2 point(touch_event.coords[i * 2], touch_event.coords[i * 2 + 1]);
+		if (p_type == 2) {
+			// touchmove
+			Ref<InputEventScreenDrag> ev;
+			ev.instantiate();
+			ev->set_index(touch_event.identifier[i]);
+			ev->set_position(point);
+
+			Point2 &prev = ds->touches[i];
+			ev->set_relative(ev->get_position() - prev);
+			prev = ev->get_position();
+
+			Input::get_singleton()->parse_input_event(ev);
+		} else {
+			// touchstart/touchend
+			Ref<InputEventScreenTouch> ev;
+
+			// Resume audio context after input in case autoplay was denied.
+			OS_Web::get_singleton()->resume_audio();
+
+			ev.instantiate();
+			ev->set_index(touch_event.identifier[i]);
+			ev->set_position(point);
+			ev->set_pressed(p_type == 0);
+			ds->touches[i] = point;
+
+			Input::get_singleton()->parse_input_event(ev);
+
+			// Make sure to flush all events so we can call restricted APIs inside the event.
+			Input::get_singleton()->flush_buffered_events();
+		}
+	}
+}
+
+bool DisplayServerWeb::screen_is_touchscreen(int p_screen) const {
+	return godot_js_display_touchscreen_is_available();
+}
+
+// Virtual Keyboard
+void DisplayServerWeb::vk_input_text_callback(const char *p_text, int p_cursor) {
+	DisplayServerWeb *ds = DisplayServerWeb::get_singleton();
+	if (!ds || ds->input_text_callback.is_null()) {
+		return;
+	}
+	// Call input_text
+	Variant event = String::utf8(p_text);
+	Variant *eventp = &event;
+	Variant ret;
+	Callable::CallError ce;
+	ds->input_text_callback.callp((const Variant **)&eventp, 1, ret, ce);
+	// Insert key right to reach position.
+	Input *input = Input::get_singleton();
+	Ref<InputEventKey> k;
+	for (int i = 0; i < p_cursor; i++) {
+		k.instantiate();
+		k->set_pressed(true);
+		k->set_echo(false);
+		k->set_keycode(Key::RIGHT);
+		input->parse_input_event(k);
+		k.instantiate();
+		k->set_pressed(false);
+		k->set_echo(false);
+		k->set_keycode(Key::RIGHT);
+		input->parse_input_event(k);
+	}
+}
+
+void DisplayServerWeb::virtual_keyboard_show(const String &p_existing_text, const Rect2 &p_screen_rect, VirtualKeyboardType p_type, int p_max_input_length, int p_cursor_start, int p_cursor_end) {
+	godot_js_display_vk_show(p_existing_text.utf8().get_data(), p_type, p_cursor_start, p_cursor_end);
+}
+
+void DisplayServerWeb::virtual_keyboard_hide() {
+	godot_js_display_vk_hide();
+}
+
+void DisplayServerWeb::window_blur_callback() {
+	Input::get_singleton()->release_pressed_events();
+}
+
+// Gamepad
+void DisplayServerWeb::gamepad_callback(int p_index, int p_connected, const char *p_id, const char *p_guid) {
+	Input *input = Input::get_singleton();
+	if (p_connected) {
+		input->joy_connection_changed(p_index, true, String::utf8(p_id), String::utf8(p_guid));
+	} else {
+		input->joy_connection_changed(p_index, false, "");
+	}
+}
+
+void DisplayServerWeb::process_joypads() {
+	Input *input = Input::get_singleton();
+	int32_t pads = godot_js_input_gamepad_sample_count();
+	int32_t s_btns_num = 0;
+	int32_t s_axes_num = 0;
+	int32_t s_standard = 0;
+	float s_btns[16];
+	float s_axes[10];
+	for (int idx = 0; idx < pads; idx++) {
+		int err = godot_js_input_gamepad_sample_get(idx, s_btns, &s_btns_num, s_axes, &s_axes_num, &s_standard);
+		if (err) {
+			continue;
+		}
+		for (int b = 0; b < s_btns_num; b++) {
+			// Buttons 6 and 7 in the standard mapping need to be
+			// axis to be handled as JoyAxis::TRIGGER by Godot.
+			if (s_standard && (b == 6 || b == 7)) {
+				input->joy_axis(idx, (JoyAxis)b, s_btns[b]);
+			} else {
+				input->joy_button(idx, (JoyButton)b, s_btns[b]);
+			}
+		}
+		for (int a = 0; a < s_axes_num; a++) {
+			input->joy_axis(idx, (JoyAxis)a, s_axes[a]);
+		}
+	}
+}
+
+Vector<String> DisplayServerWeb::get_rendering_drivers_func() {
+	Vector<String> drivers;
+#ifdef GLES3_ENABLED
+	drivers.push_back("opengl3");
+#endif
+	return drivers;
+}
+
+// Clipboard
+void DisplayServerWeb::update_clipboard_callback(const char *p_text) {
+	get_singleton()->clipboard = String::utf8(p_text);
+}
+
+void DisplayServerWeb::clipboard_set(const String &p_text) {
+	clipboard = p_text;
+	int err = godot_js_display_clipboard_set(p_text.utf8().get_data());
+	ERR_FAIL_COND_MSG(err, "Clipboard API is not supported.");
+}
+
+String DisplayServerWeb::clipboard_get() const {
+	godot_js_display_clipboard_get(update_clipboard_callback);
+	return clipboard;
+}
+
+void DisplayServerWeb::send_window_event_callback(int p_notification) {
+	DisplayServerWeb *ds = get_singleton();
+	if (!ds) {
+		return;
+	}
+	if (p_notification == DisplayServer::WINDOW_EVENT_MOUSE_ENTER || p_notification == DisplayServer::WINDOW_EVENT_MOUSE_EXIT) {
+		ds->cursor_inside_canvas = p_notification == DisplayServer::WINDOW_EVENT_MOUSE_ENTER;
+	}
+	if (!ds->window_event_callback.is_null()) {
+		Variant event = int(p_notification);
+		Variant *eventp = &event;
+		Variant ret;
+		Callable::CallError ce;
+		ds->window_event_callback.callp((const Variant **)&eventp, 1, ret, ce);
+	}
+}
+
+void DisplayServerWeb::set_icon(const Ref<Image> &p_icon) {
+	ERR_FAIL_COND(p_icon.is_null());
+	Ref<Image> icon = p_icon;
+	if (icon->is_compressed()) {
+		icon = icon->duplicate();
+		ERR_FAIL_COND(icon->decompress() != OK);
+	}
+	if (icon->get_format() != Image::FORMAT_RGBA8) {
+		if (icon == p_icon) {
+			icon = icon->duplicate();
+		}
+		icon->convert(Image::FORMAT_RGBA8);
+	}
+
+	png_image png_meta;
+	memset(&png_meta, 0, sizeof png_meta);
+	png_meta.version = PNG_IMAGE_VERSION;
+	png_meta.width = icon->get_width();
+	png_meta.height = icon->get_height();
+	png_meta.format = PNG_FORMAT_RGBA;
+
+	PackedByteArray png;
+	size_t len;
+	PackedByteArray data = icon->get_data();
+	ERR_FAIL_COND(!png_image_write_get_memory_size(png_meta, len, 0, data.ptr(), 0, nullptr));
+
+	png.resize(len);
+	ERR_FAIL_COND(!png_image_write_to_memory(&png_meta, png.ptrw(), &len, 0, data.ptr(), 0, nullptr));
+
+	godot_js_display_window_icon_set(png.ptr(), len);
+}
+
+void DisplayServerWeb::_dispatch_input_event(const Ref<InputEvent> &p_event) {
+	Callable cb = get_singleton()->input_event_callback;
+	if (!cb.is_null()) {
+		Variant ev = p_event;
+		Variant *evp = &ev;
+		Variant ret;
+		Callable::CallError ce;
+		cb.callp((const Variant **)&evp, 1, ret, ce);
+	}
+}
+
+DisplayServer *DisplayServerWeb::create_func(const String &p_rendering_driver, WindowMode p_window_mode, VSyncMode p_vsync_mode, uint32_t p_flags, const Size2i &p_resolution, Error &r_error) {
+	return memnew(DisplayServerWeb(p_rendering_driver, p_window_mode, p_vsync_mode, p_flags, p_resolution, r_error));
+}
+
+DisplayServerWeb::DisplayServerWeb(const String &p_rendering_driver, WindowMode p_window_mode, VSyncMode p_vsync_mode, uint32_t p_flags, const Size2i &p_resolution, Error &r_error) {
+	r_error = OK; // Always succeeds for now.
+
+	// Ensure the canvas ID.
+	godot_js_config_canvas_id_get(canvas_id, 256);
+
+	// Handle contextmenu, webglcontextlost
+	godot_js_display_setup_canvas(p_resolution.x, p_resolution.y, (p_window_mode == WINDOW_MODE_FULLSCREEN || p_window_mode == WINDOW_MODE_EXCLUSIVE_FULLSCREEN), OS::get_singleton()->is_hidpi_allowed() ? 1 : 0);
+
+	// Check if it's windows.
+	swap_cancel_ok = godot_js_display_is_swap_ok_cancel() == 1;
+
+	// Expose method for requesting quit.
+	godot_js_os_request_quit_cb(request_quit_callback);
+
+#ifdef GLES3_ENABLED
+	// TODO "vulkan" defaults to webgl2 for now.
+	bool wants_webgl2 = p_rendering_driver == "opengl3" || p_rendering_driver == "vulkan";
+	bool webgl2_init_failed = wants_webgl2 && !godot_js_display_has_webgl(2);
+	if (wants_webgl2 && !webgl2_init_failed) {
+		EmscriptenWebGLContextAttributes attributes;
+		emscripten_webgl_init_context_attributes(&attributes);
+		//attributes.alpha = GLOBAL_GET("display/window/per_pixel_transparency/allowed");
+		attributes.alpha = true;
+		attributes.antialias = false;
+		attributes.majorVersion = 2;
+
+		webgl_ctx = emscripten_webgl_create_context(canvas_id, &attributes);
+		if (emscripten_webgl_make_context_current(webgl_ctx) != EMSCRIPTEN_RESULT_SUCCESS) {
+			webgl2_init_failed = true;
+		} else {
+			RasterizerGLES3::make_current();
+		}
+	}
+	if (webgl2_init_failed) {
+		OS::get_singleton()->alert("Your browser does not seem to support WebGL2. Please update your browser version.",
+				"Unable to initialize video driver");
+	}
+	if (!wants_webgl2 || webgl2_init_failed) {
+		RasterizerDummy::make_current();
+	}
+#else
+	RasterizerDummy::make_current();
+#endif
+
+	// JS Input interface (js/libs/library_godot_input.js)
+	godot_js_input_mouse_button_cb(&DisplayServerWeb::mouse_button_callback);
+	godot_js_input_mouse_move_cb(&DisplayServerWeb::mouse_move_callback);
+	godot_js_input_mouse_wheel_cb(&DisplayServerWeb::mouse_wheel_callback);
+	godot_js_input_touch_cb(&DisplayServerWeb::touch_callback, touch_event.identifier, touch_event.coords);
+	godot_js_input_key_cb(&DisplayServerWeb::key_callback, key_event.code, key_event.key);
+	godot_js_input_paste_cb(update_clipboard_callback);
+	godot_js_input_drop_files_cb(drop_files_js_callback);
+	godot_js_input_gamepad_cb(&DisplayServerWeb::gamepad_callback);
+
+	// JS Display interface (js/libs/library_godot_display.js)
+	godot_js_display_fullscreen_cb(&DisplayServerWeb::fullscreen_change_callback);
+	godot_js_display_window_blur_cb(&window_blur_callback);
+	godot_js_display_notification_cb(&send_window_event_callback,
+			WINDOW_EVENT_MOUSE_ENTER,
+			WINDOW_EVENT_MOUSE_EXIT,
+			WINDOW_EVENT_FOCUS_IN,
+			WINDOW_EVENT_FOCUS_OUT);
+	godot_js_display_vk_cb(&vk_input_text_callback);
+
+	Input::get_singleton()->set_event_dispatch_function(_dispatch_input_event);
+}
+
+DisplayServerWeb::~DisplayServerWeb() {
+#ifdef GLES3_ENABLED
+	if (webgl_ctx) {
+		emscripten_webgl_commit_frame();
+		emscripten_webgl_destroy_context(webgl_ctx);
+	}
+#endif
+}
+
+bool DisplayServerWeb::has_feature(Feature p_feature) const {
+	switch (p_feature) {
+		//case FEATURE_GLOBAL_MENU:
+		//case FEATURE_HIDPI:
+		//case FEATURE_IME:
+		case FEATURE_ICON:
+		case FEATURE_CLIPBOARD:
+		case FEATURE_CURSOR_SHAPE:
+		case FEATURE_CUSTOM_CURSOR_SHAPE:
+		case FEATURE_MOUSE:
+		case FEATURE_TOUCHSCREEN:
+			return true;
+		//case FEATURE_MOUSE_WARP:
+		//case FEATURE_NATIVE_DIALOG:
+		//case FEATURE_NATIVE_ICON:
+		//case FEATURE_WINDOW_TRANSPARENCY:
+		//case FEATURE_KEEP_SCREEN_ON:
+		//case FEATURE_ORIENTATION:
+		case FEATURE_VIRTUAL_KEYBOARD:
+			return godot_js_display_vk_available() != 0;
+		case FEATURE_TEXT_TO_SPEECH:
+			return godot_js_display_tts_available() != 0;
+		default:
+			return false;
+	}
+}
+
+void DisplayServerWeb::register_web_driver() {
+	register_create_function("web", create_func, get_rendering_drivers_func);
+}
+
+String DisplayServerWeb::get_name() const {
+	return "web";
+}
+
+int DisplayServerWeb::get_screen_count() const {
+	return 1;
+}
+
+Point2i DisplayServerWeb::screen_get_position(int p_screen) const {
+	return Point2i(); // TODO offsetX/Y?
+}
+
+Size2i DisplayServerWeb::screen_get_size(int p_screen) const {
+	int size[2];
+	godot_js_display_screen_size_get(size, size + 1);
+	return Size2(size[0], size[1]);
+}
+
+Rect2i DisplayServerWeb::screen_get_usable_rect(int p_screen) const {
+	int size[2];
+	godot_js_display_window_size_get(size, size + 1);
+	return Rect2i(0, 0, size[0], size[1]);
+}
+
+int DisplayServerWeb::screen_get_dpi(int p_screen) const {
+	return godot_js_display_screen_dpi_get();
+}
+
+float DisplayServerWeb::screen_get_scale(int p_screen) const {
+	return godot_js_display_pixel_ratio_get();
+}
+
+float DisplayServerWeb::screen_get_refresh_rate(int p_screen) const {
+	return SCREEN_REFRESH_RATE_FALLBACK; // Web doesn't have much of a need for the screen refresh rate, and there's no native way to do so.
+}
+
+Vector<DisplayServer::WindowID> DisplayServerWeb::get_window_list() const {
+	Vector<WindowID> ret;
+	ret.push_back(MAIN_WINDOW_ID);
+	return ret;
+}
+
+DisplayServerWeb::WindowID DisplayServerWeb::get_window_at_screen_position(const Point2i &p_position) const {
+	return MAIN_WINDOW_ID;
+}
+
+void DisplayServerWeb::window_attach_instance_id(ObjectID p_instance, WindowID p_window) {
+	window_attached_instance_id = p_instance;
+}
+
+ObjectID DisplayServerWeb::window_get_attached_instance_id(WindowID p_window) const {
+	return window_attached_instance_id;
+}
+
+void DisplayServerWeb::window_set_rect_changed_callback(const Callable &p_callable, WindowID p_window) {
+	// Not supported.
+}
+
+void DisplayServerWeb::window_set_window_event_callback(const Callable &p_callable, WindowID p_window) {
+	window_event_callback = p_callable;
+}
+
+void DisplayServerWeb::window_set_input_event_callback(const Callable &p_callable, WindowID p_window) {
+	input_event_callback = p_callable;
+}
+
+void DisplayServerWeb::window_set_input_text_callback(const Callable &p_callable, WindowID p_window) {
+	input_text_callback = p_callable;
+}
+
+void DisplayServerWeb::window_set_drop_files_callback(const Callable &p_callable, WindowID p_window) {
+	drop_files_callback = p_callable;
+}
+
+void DisplayServerWeb::window_set_title(const String &p_title, WindowID p_window) {
+	godot_js_display_window_title_set(p_title.utf8().get_data());
+}
+
+int DisplayServerWeb::window_get_current_screen(WindowID p_window) const {
+	return 1;
+}
+
+void DisplayServerWeb::window_set_current_screen(int p_screen, WindowID p_window) {
+	// Not implemented.
+}
+
+Point2i DisplayServerWeb::window_get_position(WindowID p_window) const {
+	return Point2i(); // TODO Does this need implementation?
+}
+
+void DisplayServerWeb::window_set_position(const Point2i &p_position, WindowID p_window) {
+	// Not supported.
+}
+
+void DisplayServerWeb::window_set_transient(WindowID p_window, WindowID p_parent) {
+	// Not supported.
+}
+
+void DisplayServerWeb::window_set_max_size(const Size2i p_size, WindowID p_window) {
+	// Not supported.
+}
+
+Size2i DisplayServerWeb::window_get_max_size(WindowID p_window) const {
+	return Size2i();
+}
+
+void DisplayServerWeb::window_set_min_size(const Size2i p_size, WindowID p_window) {
+	// Not supported.
+}
+
+Size2i DisplayServerWeb::window_get_min_size(WindowID p_window) const {
+	return Size2i();
+}
+
+void DisplayServerWeb::window_set_size(const Size2i p_size, WindowID p_window) {
+	godot_js_display_desired_size_set(p_size.x, p_size.y);
+}
+
+Size2i DisplayServerWeb::window_get_size(WindowID p_window) const {
+	int size[2];
+	godot_js_display_window_size_get(size, size + 1);
+	return Size2i(size[0], size[1]);
+}
+
+Size2i DisplayServerWeb::window_get_real_size(WindowID p_window) const {
+	return window_get_size(p_window);
+}
+
+void DisplayServerWeb::window_set_mode(WindowMode p_mode, WindowID p_window) {
+	if (window_mode == p_mode) {
+		return;
+	}
+
+	switch (p_mode) {
+		case WINDOW_MODE_WINDOWED: {
+			if (window_mode == WINDOW_MODE_FULLSCREEN) {
+				godot_js_display_fullscreen_exit();
+			}
+			window_mode = WINDOW_MODE_WINDOWED;
+		} break;
+		case WINDOW_MODE_EXCLUSIVE_FULLSCREEN:
+		case WINDOW_MODE_FULLSCREEN: {
+			int result = godot_js_display_fullscreen_request();
+			ERR_FAIL_COND_MSG(result, "The request was denied. Remember that enabling fullscreen is only possible from an input callback for the Web platform.");
+		} break;
+		case WINDOW_MODE_MAXIMIZED:
+		case WINDOW_MODE_MINIMIZED:
+			WARN_PRINT("WindowMode MAXIMIZED and MINIMIZED are not supported in Web platform.");
+			break;
+		default:
+			break;
+	}
+}
+
+DisplayServerWeb::WindowMode DisplayServerWeb::window_get_mode(WindowID p_window) const {
+	return window_mode;
+}
+
+bool DisplayServerWeb::window_is_maximize_allowed(WindowID p_window) const {
+	return false;
+}
+
+void DisplayServerWeb::window_set_flag(WindowFlags p_flag, bool p_enabled, WindowID p_window) {
+	// Not supported.
+}
+
+bool DisplayServerWeb::window_get_flag(WindowFlags p_flag, WindowID p_window) const {
+	return false;
+}
+
+void DisplayServerWeb::window_request_attention(WindowID p_window) {
+	// Not supported.
+}
+
+void DisplayServerWeb::window_move_to_foreground(WindowID p_window) {
+	// Not supported.
+}
+
+bool DisplayServerWeb::window_can_draw(WindowID p_window) const {
+	return true;
+}
+
+bool DisplayServerWeb::can_any_window_draw() const {
+	return true;
+}
+
+void DisplayServerWeb::process_events() {
+	Input::get_singleton()->flush_buffered_events();
+	if (godot_js_input_gamepad_sample() == OK) {
+		process_joypads();
+	}
+}
+
+int DisplayServerWeb::get_current_video_driver() const {
+	return 1;
+}
+
+bool DisplayServerWeb::get_swap_cancel_ok() {
+	return swap_cancel_ok;
+}
+
+void DisplayServerWeb::swap_buffers() {
+#ifdef GLES3_ENABLED
+	if (webgl_ctx) {
+		emscripten_webgl_commit_frame();
+	}
+#endif
+}
diff --git a/platform/web/display_server_web.h b/platform/web/display_server_web.h
new file mode 100644
index 0000000000..85076b906f
--- /dev/null
+++ b/platform/web/display_server_web.h
@@ -0,0 +1,228 @@
+/*************************************************************************/
+/*  display_server_web.h                                                 */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef DISPLAY_SERVER_WEB_H
+#define DISPLAY_SERVER_WEB_H
+
+#include "servers/display_server.h"
+
+#include <emscripten.h>
+#include <emscripten/html5.h>
+
+class DisplayServerWeb : public DisplayServer {
+private:
+	struct JSTouchEvent {
+		uint32_t identifier[32] = { 0 };
+		double coords[64] = { 0 };
+	};
+	JSTouchEvent touch_event;
+
+	struct JSKeyEvent {
+		char code[32] = { 0 };
+		char key[32] = { 0 };
+		uint8_t modifiers[4] = { 0 };
+	};
+	JSKeyEvent key_event;
+
+#ifdef GLES3_ENABLED
+	EMSCRIPTEN_WEBGL_CONTEXT_HANDLE webgl_ctx = 0;
+#endif
+
+	HashMap<int, CharString> utterance_ids;
+
+	WindowMode window_mode = WINDOW_MODE_WINDOWED;
+	ObjectID window_attached_instance_id = {};
+
+	Callable window_event_callback;
+	Callable input_event_callback;
+	Callable input_text_callback;
+	Callable drop_files_callback;
+
+	String clipboard;
+	Point2 touches[32];
+
+	Array voices;
+
+	char canvas_id[256] = { 0 };
+	bool cursor_inside_canvas = true;
+	CursorShape cursor_shape = CURSOR_ARROW;
+	Point2i last_click_pos = Point2(-100, -100); // TODO check this again.
+	uint64_t last_click_ms = 0;
+	MouseButton last_click_button_index = MouseButton::NONE;
+
+	bool swap_cancel_ok = false;
+
+	// utilities
+	static void dom2godot_mod(Ref<InputEventWithModifiers> ev, int p_mod);
+	static const char *godot2dom_cursor(DisplayServer::CursorShape p_shape);
+
+	// events
+	static void fullscreen_change_callback(int p_fullscreen);
+	static int mouse_button_callback(int p_pressed, int p_button, double p_x, double p_y, int p_modifiers);
+	static void mouse_move_callback(double p_x, double p_y, double p_rel_x, double p_rel_y, int p_modifiers);
+	static int mouse_wheel_callback(double p_delta_x, double p_delta_y);
+	static void touch_callback(int p_type, int p_count);
+	static void key_callback(int p_pressed, int p_repeat, int p_modifiers);
+	static void vk_input_text_callback(const char *p_text, int p_cursor);
+	static void gamepad_callback(int p_index, int p_connected, const char *p_id, const char *p_guid);
+	void process_joypads();
+	static void _js_utterance_callback(int p_event, int p_id, int p_pos);
+
+	static Vector<String> get_rendering_drivers_func();
+	static DisplayServer *create_func(const String &p_rendering_driver, WindowMode p_window_mode, VSyncMode p_vsync_mode, uint32_t p_flags, const Vector2i &p_resolution, Error &r_error);
+
+	static void _dispatch_input_event(const Ref<InputEvent> &p_event);
+
+	static void request_quit_callback();
+	static void window_blur_callback();
+	static void update_voices_callback(int p_size, const char **p_voice);
+	static void update_clipboard_callback(const char *p_text);
+	static void send_window_event_callback(int p_notification);
+	static void drop_files_js_callback(char **p_filev, int p_filec);
+
+protected:
+	int get_current_video_driver() const;
+
+public:
+	// Override return type to make writing static callbacks less tedious.
+	static DisplayServerWeb *get_singleton();
+
+	// utilities
+	bool check_size_force_redraw();
+
+	// from DisplayServer
+	virtual bool has_feature(Feature p_feature) const override;
+	virtual String get_name() const override;
+
+	// tts
+	virtual bool tts_is_speaking() const override;
+	virtual bool tts_is_paused() const override;
+	virtual TypedArray<Dictionary> tts_get_voices() const override;
+
+	virtual void tts_speak(const String &p_text, const String &p_voice, int p_volume = 50, float p_pitch = 1.f, float p_rate = 1.f, int p_utterance_id = 0, bool p_interrupt = false) override;
+	virtual void tts_pause() override;
+	virtual void tts_resume() override;
+	virtual void tts_stop() override;
+
+	// cursor
+	virtual void cursor_set_shape(CursorShape p_shape) override;
+	virtual CursorShape cursor_get_shape() const override;
+	virtual void cursor_set_custom_image(const Ref<Resource> &p_cursor, CursorShape p_shape = CURSOR_ARROW, const Vector2 &p_hotspot = Vector2()) override;
+
+	// mouse
+	virtual void mouse_set_mode(MouseMode p_mode) override;
+	virtual MouseMode mouse_get_mode() const override;
+	virtual Point2i mouse_get_position() const override;
+
+	// touch
+	virtual bool screen_is_touchscreen(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;
+
+	// clipboard
+	virtual void clipboard_set(const String &p_text) override;
+	virtual String clipboard_get() const override;
+
+	// screen
+	virtual int get_screen_count() const override;
+	virtual Point2i screen_get_position(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;
+	virtual Size2i screen_get_size(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;
+	virtual Rect2i screen_get_usable_rect(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;
+	virtual int screen_get_dpi(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;
+	virtual float screen_get_scale(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;
+	virtual float screen_get_refresh_rate(int p_screen = SCREEN_OF_MAIN_WINDOW) const override;
+
+	virtual void virtual_keyboard_show(const String &p_existing_text, const Rect2 &p_screen_rect = Rect2(), VirtualKeyboardType p_type = KEYBOARD_TYPE_DEFAULT, int p_max_input_length = -1, int p_cursor_start = -1, int p_cursor_end = -1) override;
+	virtual void virtual_keyboard_hide() override;
+
+	// windows
+	virtual Vector<DisplayServer::WindowID> get_window_list() const override;
+	virtual WindowID get_window_at_screen_position(const Point2i &p_position) const override;
+
+	virtual void window_attach_instance_id(ObjectID p_instance, WindowID p_window = MAIN_WINDOW_ID) override;
+	virtual ObjectID window_get_attached_instance_id(WindowID p_window = MAIN_WINDOW_ID) const override;
+
+	virtual void window_set_rect_changed_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID) override;
+
+	virtual void window_set_window_event_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID) override;
+	virtual void window_set_input_event_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID) override;
+	virtual void window_set_input_text_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID) override;
+
+	virtual void window_set_drop_files_callback(const Callable &p_callable, WindowID p_window = MAIN_WINDOW_ID) override;
+
+	virtual void window_set_title(const String &p_title, WindowID p_window = MAIN_WINDOW_ID) override;
+
+	virtual int window_get_current_screen(WindowID p_window = MAIN_WINDOW_ID) const override;
+	virtual void window_set_current_screen(int p_screen, WindowID p_window = MAIN_WINDOW_ID) override;
+
+	virtual Point2i window_get_position(WindowID p_window = MAIN_WINDOW_ID) const override;
+	virtual void window_set_position(const Point2i &p_position, WindowID p_window = MAIN_WINDOW_ID) override;
+
+	virtual void window_set_transient(WindowID p_window, WindowID p_parent) override;
+
+	virtual void window_set_max_size(const Size2i p_size, WindowID p_window = MAIN_WINDOW_ID) override;
+	virtual Size2i window_get_max_size(WindowID p_window = MAIN_WINDOW_ID) const override;
+
+	virtual void window_set_min_size(const Size2i p_size, WindowID p_window = MAIN_WINDOW_ID) override;
+	virtual Size2i window_get_min_size(WindowID p_window = MAIN_WINDOW_ID) const override;
+
+	virtual void window_set_size(const Size2i p_size, WindowID p_window = MAIN_WINDOW_ID) override;
+	virtual Size2i window_get_size(WindowID p_window = MAIN_WINDOW_ID) const override;
+	virtual Size2i window_get_real_size(WindowID p_window = MAIN_WINDOW_ID) const override;
+
+	virtual void window_set_mode(WindowMode p_mode, WindowID p_window = MAIN_WINDOW_ID) override;
+	virtual WindowMode window_get_mode(WindowID p_window = MAIN_WINDOW_ID) const override;
+
+	virtual bool window_is_maximize_allowed(WindowID p_window = MAIN_WINDOW_ID) const override;
+
+	virtual void window_set_flag(WindowFlags p_flag, bool p_enabled, WindowID p_window = MAIN_WINDOW_ID) override;
+	virtual bool window_get_flag(WindowFlags p_flag, WindowID p_window = MAIN_WINDOW_ID) const override;
+
+	virtual void window_request_attention(WindowID p_window = MAIN_WINDOW_ID) override;
+	virtual void window_move_to_foreground(WindowID p_window = MAIN_WINDOW_ID) override;
+
+	virtual bool window_can_draw(WindowID p_window = MAIN_WINDOW_ID) const override;
+
+	virtual bool can_any_window_draw() const override;
+
+	// events
+	virtual void process_events() override;
+
+	// icon
+	virtual void set_icon(const Ref<Image> &p_icon) override;
+
+	// others
+	virtual bool get_swap_cancel_ok() override;
+	virtual void swap_buffers() override;
+
+	static void register_web_driver();
+	DisplayServerWeb(const String &p_rendering_driver, WindowMode p_window_mode, VSyncMode p_vsync_mode, uint32_t p_flags, const Size2i &p_resolution, Error &r_error);
+	~DisplayServerWeb();
+};
+
+#endif // DISPLAY_SERVER_WEB_H
diff --git a/platform/web/dom_keys.inc b/platform/web/dom_keys.inc
new file mode 100644
index 0000000000..115b5479e4
--- /dev/null
+++ b/platform/web/dom_keys.inc
@@ -0,0 +1,232 @@
+/*************************************************************************/
+/*  dom_keys.inc                                                         */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "core/os/keyboard.h"
+
+// See https://w3c.github.io/uievents-code/#code-value-tables
+Key dom_code2godot_scancode(EM_UTF8 const p_code[32], EM_UTF8 const p_key[32], bool p_physical) {
+#define DOM2GODOT(p_str, p_godot_code)                                         \
+	if (memcmp((const void *)p_str, (void *)p_code, strlen(p_str) + 1) == 0) { \
+		return Key::p_godot_code;                                              \
+	}
+
+	// Numpad section.
+	DOM2GODOT("NumLock", NUMLOCK);
+	DOM2GODOT("Numpad0", KP_0);
+	DOM2GODOT("Numpad1", KP_1);
+	DOM2GODOT("Numpad2", KP_2);
+	DOM2GODOT("Numpad3", KP_3);
+	DOM2GODOT("Numpad4", KP_4);
+	DOM2GODOT("Numpad5", KP_5);
+	DOM2GODOT("Numpad6", KP_6);
+	DOM2GODOT("Numpad7", KP_7);
+	DOM2GODOT("Numpad8", KP_8);
+	DOM2GODOT("Numpad9", KP_9);
+	DOM2GODOT("NumpadAdd", KP_ADD);
+	DOM2GODOT("NumpadBackspace", BACKSPACE);
+	DOM2GODOT("NumpadClear", CLEAR);
+	DOM2GODOT("NumpadClearEntry", CLEAR);
+	//DOM2GODOT("NumpadComma", UNKNOWN);
+	DOM2GODOT("NumpadDecimal", KP_PERIOD);
+	DOM2GODOT("NumpadDivide", KP_DIVIDE);
+	DOM2GODOT("NumpadEnter", KP_ENTER);
+	DOM2GODOT("NumpadEqual", EQUAL);
+	//DOM2GODOT("NumpadHash", UNKNOWN);
+	//DOM2GODOT("NumpadMemoryAdd", UNKNOWN);
+	//DOM2GODOT("NumpadMemoryClear", UNKNOWN);
+	//DOM2GODOT("NumpadMemoryRecall", UNKNOWN);
+	//DOM2GODOT("NumpadMemoryStore", UNKNOWN);
+	//DOM2GODOT("NumpadMemorySubtract", UNKNOWN);
+	DOM2GODOT("NumpadMultiply", KP_MULTIPLY);
+	DOM2GODOT("NumpadParenLeft", PARENLEFT);
+	DOM2GODOT("NumpadParenRight", PARENRIGHT);
+	DOM2GODOT("NumpadStar", KP_MULTIPLY); // or ASTERISK ?
+	DOM2GODOT("NumpadSubtract", KP_SUBTRACT);
+
+	// Printable ASCII.
+	if (!p_physical) {
+		uint8_t b0 = (uint8_t)p_key[0];
+		uint8_t b1 = (uint8_t)p_key[1];
+		uint8_t b2 = (uint8_t)p_key[2];
+		if (b1 == 0 && b0 > 0x1F && b0 < 0x7F) { // ASCII.
+			if (b0 > 0x60 && b0 < 0x7B) { // Lowercase ASCII.
+				b0 -= 32;
+			}
+			return (Key)b0;
+		}
+
+#define _U_2BYTES_MASK 0xE0
+#define _U_2BYTES 0xC0
+		// Latin-1 codes.
+		if (b2 == 0 && (b0 & _U_2BYTES_MASK) == _U_2BYTES) { // 2-bytes utf8, only known latin.
+			uint32_t key = ((b0 & ~_U_2BYTES_MASK) << 6) | (b1 & 0x3F);
+			if (key >= 0xA0 && key <= 0xDF) {
+				return (Key)key;
+			}
+			if (key >= 0xE0 && key <= 0xFF) { // Lowercase known latin.
+				key -= 0x20;
+				return (Key)key;
+			}
+		}
+#undef _U_2BYTES_MASK
+#undef _U_2BYTES
+	}
+
+	// Alphanumeric section.
+	DOM2GODOT("Backquote", QUOTELEFT);
+	DOM2GODOT("Backslash", BACKSLASH);
+	DOM2GODOT("BracketLeft", BRACKETLEFT);
+	DOM2GODOT("BracketRight", BRACKETRIGHT);
+	DOM2GODOT("Comma", COMMA);
+	DOM2GODOT("Digit0", KEY_0);
+	DOM2GODOT("Digit1", KEY_1);
+	DOM2GODOT("Digit2", KEY_2);
+	DOM2GODOT("Digit3", KEY_3);
+	DOM2GODOT("Digit4", KEY_4);
+	DOM2GODOT("Digit5", KEY_5);
+	DOM2GODOT("Digit6", KEY_6);
+	DOM2GODOT("Digit7", KEY_7);
+	DOM2GODOT("Digit8", KEY_8);
+	DOM2GODOT("Digit9", KEY_9);
+	DOM2GODOT("Equal", EQUAL);
+	DOM2GODOT("IntlBackslash", BACKSLASH);
+	//DOM2GODOT("IntlRo", UNKNOWN);
+	DOM2GODOT("IntlYen", YEN);
+
+	DOM2GODOT("KeyA", A);
+	DOM2GODOT("KeyB", B);
+	DOM2GODOT("KeyC", C);
+	DOM2GODOT("KeyD", D);
+	DOM2GODOT("KeyE", E);
+	DOM2GODOT("KeyF", F);
+	DOM2GODOT("KeyG", G);
+	DOM2GODOT("KeyH", H);
+	DOM2GODOT("KeyI", I);
+	DOM2GODOT("KeyJ", J);
+	DOM2GODOT("KeyK", K);
+	DOM2GODOT("KeyL", L);
+	DOM2GODOT("KeyM", M);
+	DOM2GODOT("KeyN", N);
+	DOM2GODOT("KeyO", O);
+	DOM2GODOT("KeyP", P);
+	DOM2GODOT("KeyQ", Q);
+	DOM2GODOT("KeyR", R);
+	DOM2GODOT("KeyS", S);
+	DOM2GODOT("KeyT", T);
+	DOM2GODOT("KeyU", U);
+	DOM2GODOT("KeyV", V);
+	DOM2GODOT("KeyW", W);
+	DOM2GODOT("KeyX", X);
+	DOM2GODOT("KeyY", Y);
+	DOM2GODOT("KeyZ", Z);
+
+	DOM2GODOT("Minus", MINUS);
+	DOM2GODOT("Period", PERIOD);
+	DOM2GODOT("Quote", APOSTROPHE);
+	DOM2GODOT("Semicolon", SEMICOLON);
+	DOM2GODOT("Slash", SLASH);
+
+	// Functional keys in the Alphanumeric section.
+	DOM2GODOT("AltLeft", ALT);
+	DOM2GODOT("AltRight", ALT);
+	DOM2GODOT("Backspace", BACKSPACE);
+	DOM2GODOT("CapsLock", CAPSLOCK);
+	DOM2GODOT("ContextMenu", MENU);
+	DOM2GODOT("ControlLeft", CTRL);
+	DOM2GODOT("ControlRight", CTRL);
+	DOM2GODOT("Enter", ENTER);
+	DOM2GODOT("MetaLeft", SUPER_L);
+	DOM2GODOT("MetaRight", SUPER_R);
+	DOM2GODOT("ShiftLeft", SHIFT);
+	DOM2GODOT("ShiftRight", SHIFT);
+	DOM2GODOT("Space", SPACE);
+	DOM2GODOT("Tab", TAB);
+
+	// ControlPad section.
+	DOM2GODOT("Delete", KEY_DELETE);
+	DOM2GODOT("End", END);
+	DOM2GODOT("Help", HELP);
+	DOM2GODOT("Home", HOME);
+	DOM2GODOT("Insert", INSERT);
+	DOM2GODOT("PageDown", PAGEDOWN);
+	DOM2GODOT("PageUp", PAGEUP);
+
+	// ArrowPad section.
+	DOM2GODOT("ArrowDown", DOWN);
+	DOM2GODOT("ArrowLeft", LEFT);
+	DOM2GODOT("ArrowRight", RIGHT);
+	DOM2GODOT("ArrowUp", UP);
+
+	// Function section.
+	DOM2GODOT("Escape", ESCAPE);
+	DOM2GODOT("F1", F1);
+	DOM2GODOT("F2", F2);
+	DOM2GODOT("F3", F3);
+	DOM2GODOT("F4", F4);
+	DOM2GODOT("F5", F5);
+	DOM2GODOT("F6", F6);
+	DOM2GODOT("F7", F7);
+	DOM2GODOT("F8", F8);
+	DOM2GODOT("F9", F9);
+	DOM2GODOT("F10", F10);
+	DOM2GODOT("F11", F11);
+	DOM2GODOT("F12", F12);
+	//DOM2GODOT("Fn", UNKNOWN); // never actually fired, but included in the standard draft.
+	//DOM2GODOT("FnLock", UNKNOWN);
+	DOM2GODOT("PrintScreen", PRINT);
+	DOM2GODOT("ScrollLock", SCROLLLOCK);
+	DOM2GODOT("Pause", PAUSE);
+
+	// Media keys section.
+	DOM2GODOT("BrowserBack", BACK);
+	DOM2GODOT("BrowserFavorites", FAVORITES);
+	DOM2GODOT("BrowserForward", FORWARD);
+	DOM2GODOT("BrowserHome", OPENURL);
+	DOM2GODOT("BrowserRefresh", REFRESH);
+	DOM2GODOT("BrowserSearch", SEARCH);
+	DOM2GODOT("BrowserStop", STOP);
+	//DOM2GODOT("Eject", UNKNOWN);
+	DOM2GODOT("LaunchApp1", LAUNCH0);
+	DOM2GODOT("LaunchApp2", LAUNCH1);
+	DOM2GODOT("LaunchMail", LAUNCHMAIL);
+	DOM2GODOT("MediaPlayPause", MEDIAPLAY);
+	DOM2GODOT("MediaSelect", LAUNCHMEDIA);
+	DOM2GODOT("MediaStop", MEDIASTOP);
+	DOM2GODOT("MediaTrackNext", MEDIANEXT);
+	DOM2GODOT("MediaTrackPrevious", MEDIAPREVIOUS);
+	//DOM2GODOT("Power", UNKNOWN);
+	//DOM2GODOT("Sleep", UNKNOWN);
+	DOM2GODOT("AudioVolumeDown", VOLUMEDOWN);
+	DOM2GODOT("AudioVolumeMute", VOLUMEMUTE);
+	DOM2GODOT("AudioVolumeUp", VOLUMEUP);
+	//DOM2GODOT("WakeUp", UNKNOWN);
+	return Key::UNKNOWN;
+#undef DOM2GODOT
+}
diff --git a/platform/web/emscripten_helpers.py b/platform/web/emscripten_helpers.py
new file mode 100644
index 0000000000..b7b1026ef7
--- /dev/null
+++ b/platform/web/emscripten_helpers.py
@@ -0,0 +1,128 @@
+import os, json
+
+from SCons.Util import WhereIs
+
+
+def run_closure_compiler(target, source, env, for_signature):
+    closure_bin = os.path.join(os.path.dirname(WhereIs("emcc")), "node_modules", ".bin", "google-closure-compiler")
+    cmd = [WhereIs("node"), closure_bin]
+    cmd.extend(["--compilation_level", "ADVANCED_OPTIMIZATIONS"])
+    for f in env["JSEXTERNS"]:
+        cmd.extend(["--externs", f.get_abspath()])
+    for f in source:
+        cmd.extend(["--js", f.get_abspath()])
+    cmd.extend(["--js_output_file", target[0].get_abspath()])
+    return " ".join(cmd)
+
+
+def get_build_version():
+    import version
+
+    name = "custom_build"
+    if os.getenv("BUILD_NAME") != None:
+        name = os.getenv("BUILD_NAME")
+    v = "%d.%d" % (version.major, version.minor)
+    if version.patch > 0:
+        v += ".%d" % version.patch
+    status = version.status
+    if os.getenv("GODOT_VERSION_STATUS") != None:
+        status = str(os.getenv("GODOT_VERSION_STATUS"))
+    v += ".%s.%s" % (status, name)
+    return v
+
+
+def create_engine_file(env, target, source, externs):
+    if env["use_closure_compiler"]:
+        return env.BuildJS(target, source, JSEXTERNS=externs)
+    return env.Textfile(target, [env.File(s) for s in source])
+
+
+def create_template_zip(env, js, wasm, extra):
+    binary_name = "godot.tools" if env["tools"] else "godot"
+    zip_dir = env.Dir("#bin/.web_zip")
+    in_files = [
+        js,
+        wasm,
+        "#platform/web/js/libs/audio.worklet.js",
+    ]
+    out_files = [
+        zip_dir.File(binary_name + ".js"),
+        zip_dir.File(binary_name + ".wasm"),
+        zip_dir.File(binary_name + ".audio.worklet.js"),
+    ]
+    # GDNative/Threads specific
+    if env["gdnative_enabled"]:
+        in_files.append(extra.pop())  # Runtime
+        out_files.append(zip_dir.File(binary_name + ".side.wasm"))
+    if env["threads_enabled"]:
+        in_files.append(extra.pop())  # Worker
+        out_files.append(zip_dir.File(binary_name + ".worker.js"))
+
+    service_worker = "#misc/dist/html/service-worker.js"
+    if env["tools"]:
+        # HTML
+        html = "#misc/dist/html/editor.html"
+        cache = [
+            "godot.tools.html",
+            "offline.html",
+            "godot.tools.js",
+            "godot.tools.worker.js",
+            "godot.tools.audio.worklet.js",
+            "logo.svg",
+            "favicon.png",
+        ]
+        opt_cache = ["godot.tools.wasm"]
+        subst_dict = {
+            "@GODOT_VERSION@": get_build_version(),
+            "@GODOT_NAME@": "GodotEngine",
+            "@GODOT_CACHE@": json.dumps(cache),
+            "@GODOT_OPT_CACHE@": json.dumps(opt_cache),
+            "@GODOT_OFFLINE_PAGE@": "offline.html",
+        }
+        html = env.Substfile(target="#bin/godot${PROGSUFFIX}.html", source=html, SUBST_DICT=subst_dict)
+        in_files.append(html)
+        out_files.append(zip_dir.File(binary_name + ".html"))
+        # And logo/favicon
+        in_files.append("#misc/dist/html/logo.svg")
+        out_files.append(zip_dir.File("logo.svg"))
+        in_files.append("#icon.png")
+        out_files.append(zip_dir.File("favicon.png"))
+        # PWA
+        service_worker = env.Substfile(
+            target="#bin/godot${PROGSUFFIX}.service.worker.js", source=service_worker, SUBST_DICT=subst_dict
+        )
+        in_files.append(service_worker)
+        out_files.append(zip_dir.File("service.worker.js"))
+        in_files.append("#misc/dist/html/manifest.json")
+        out_files.append(zip_dir.File("manifest.json"))
+        in_files.append("#misc/dist/html/offline.html")
+        out_files.append(zip_dir.File("offline.html"))
+    else:
+        # HTML
+        in_files.append("#misc/dist/html/full-size.html")
+        out_files.append(zip_dir.File(binary_name + ".html"))
+        in_files.append(service_worker)
+        out_files.append(zip_dir.File(binary_name + ".service.worker.js"))
+        in_files.append("#misc/dist/html/offline-export.html")
+        out_files.append(zip_dir.File("godot.offline.html"))
+
+    zip_files = env.InstallAs(out_files, in_files)
+    env.Zip(
+        "#bin/godot",
+        zip_files,
+        ZIPROOT=zip_dir,
+        ZIPSUFFIX="${PROGSUFFIX}${ZIPSUFFIX}",
+        ZIPCOMSTR="Archiving $SOURCES as $TARGET",
+    )
+
+
+def add_js_libraries(env, libraries):
+    env.Append(JS_LIBS=env.File(libraries))
+
+
+def add_js_pre(env, js_pre):
+    env.Append(JS_PRE=env.File(js_pre))
+
+
+def add_js_externs(env, externs):
+    env.Append(JS_EXTERNS=env.File(externs))
diff --git a/platform/web/export/editor_http_server.h b/platform/web/export/editor_http_server.h
new file mode 100644
index 0000000000..1e50e60a28
--- /dev/null
+++ b/platform/web/export/editor_http_server.h
@@ -0,0 +1,250 @@
+/*************************************************************************/
+/*  editor_http_server.h                                                 */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef WEB_EDITOR_HTTP_SERVER_H
+#define WEB_EDITOR_HTTP_SERVER_H
+
+#include "core/io/image_loader.h"
+#include "core/io/stream_peer_ssl.h"
+#include "core/io/tcp_server.h"
+#include "core/io/zip_io.h"
+#include "editor/editor_paths.h"
+
+class EditorHTTPServer : public RefCounted {
+private:
+	Ref<TCPServer> server;
+	HashMap<String, String> mimes;
+	Ref<StreamPeerTCP> tcp;
+	Ref<StreamPeerSSL> ssl;
+	Ref<StreamPeer> peer;
+	Ref<CryptoKey> key;
+	Ref<X509Certificate> cert;
+	bool use_ssl = false;
+	uint64_t time = 0;
+	uint8_t req_buf[4096];
+	int req_pos = 0;
+
+	void _clear_client() {
+		peer = Ref<StreamPeer>();
+		ssl = Ref<StreamPeerSSL>();
+		tcp = Ref<StreamPeerTCP>();
+		memset(req_buf, 0, sizeof(req_buf));
+		time = 0;
+		req_pos = 0;
+	}
+
+	void _set_internal_certs(Ref<Crypto> p_crypto) {
+		const String cache_path = EditorPaths::get_singleton()->get_cache_dir();
+		const String key_path = cache_path.plus_file("html5_server.key");
+		const String crt_path = cache_path.plus_file("html5_server.crt");
+		bool regen = !FileAccess::exists(key_path) || !FileAccess::exists(crt_path);
+		if (!regen) {
+			key = Ref<CryptoKey>(CryptoKey::create());
+			cert = Ref<X509Certificate>(X509Certificate::create());
+			if (key->load(key_path) != OK || cert->load(crt_path) != OK) {
+				regen = true;
+			}
+		}
+		if (regen) {
+			key = p_crypto->generate_rsa(2048);
+			key->save(key_path);
+			cert = p_crypto->generate_self_signed_certificate(key, "CN=godot-debug.local,O=A Game Dev,C=XXA", "20140101000000", "20340101000000");
+			cert->save(crt_path);
+		}
+	}
+
+public:
+	EditorHTTPServer() {
+		mimes["html"] = "text/html";
+		mimes["js"] = "application/javascript";
+		mimes["json"] = "application/json";
+		mimes["pck"] = "application/octet-stream";
+		mimes["png"] = "image/png";
+		mimes["svg"] = "image/svg";
+		mimes["wasm"] = "application/wasm";
+		server.instantiate();
+		stop();
+	}
+
+	void stop() {
+		server->stop();
+		_clear_client();
+	}
+
+	Error listen(int p_port, IPAddress p_address, bool p_use_ssl, String p_ssl_key, String p_ssl_cert) {
+		use_ssl = p_use_ssl;
+		if (use_ssl) {
+			Ref<Crypto> crypto = Crypto::create();
+			if (crypto.is_null()) {
+				return ERR_UNAVAILABLE;
+			}
+			if (!p_ssl_key.is_empty() && !p_ssl_cert.is_empty()) {
+				key = Ref<CryptoKey>(CryptoKey::create());
+				Error err = key->load(p_ssl_key);
+				ERR_FAIL_COND_V(err != OK, err);
+				cert = Ref<X509Certificate>(X509Certificate::create());
+				err = cert->load(p_ssl_cert);
+				ERR_FAIL_COND_V(err != OK, err);
+			} else {
+				_set_internal_certs(crypto);
+			}
+		}
+		return server->listen(p_port, p_address);
+	}
+
+	bool is_listening() const {
+		return server->is_listening();
+	}
+
+	void _send_response() {
+		Vector<String> psa = String((char *)req_buf).split("\r\n");
+		int len = psa.size();
+		ERR_FAIL_COND_MSG(len < 4, "Not enough response headers, got: " + itos(len) + ", expected >= 4.");
+
+		Vector<String> req = psa[0].split(" ", false);
+		ERR_FAIL_COND_MSG(req.size() < 2, "Invalid protocol or status code.");
+
+		// Wrong protocol
+		ERR_FAIL_COND_MSG(req[0] != "GET" || req[2] != "HTTP/1.1", "Invalid method or HTTP version.");
+
+		const int query_index = req[1].find_char('?');
+		const String path = (query_index == -1) ? req[1] : req[1].substr(0, query_index);
+
+		const String req_file = path.get_file();
+		const String req_ext = path.get_extension();
+		const String cache_path = EditorPaths::get_singleton()->get_cache_dir().plus_file("web");
+		const String filepath = cache_path.plus_file(req_file);
+
+		if (!mimes.has(req_ext) || !FileAccess::exists(filepath)) {
+			String s = "HTTP/1.1 404 Not Found\r\n";
+			s += "Connection: Close\r\n";
+			s += "\r\n";
+			CharString cs = s.utf8();
+			peer->put_data((const uint8_t *)cs.get_data(), cs.size() - 1);
+			return;
+		}
+		const String ctype = mimes[req_ext];
+
+		Ref<FileAccess> f = FileAccess::open(filepath, FileAccess::READ);
+		ERR_FAIL_COND(f.is_null());
+		String s = "HTTP/1.1 200 OK\r\n";
+		s += "Connection: Close\r\n";
+		s += "Content-Type: " + ctype + "\r\n";
+		s += "Access-Control-Allow-Origin: *\r\n";
+		s += "Cross-Origin-Opener-Policy: same-origin\r\n";
+		s += "Cross-Origin-Embedder-Policy: require-corp\r\n";
+		s += "Cache-Control: no-store, max-age=0\r\n";
+		s += "\r\n";
+		CharString cs = s.utf8();
+		Error err = peer->put_data((const uint8_t *)cs.get_data(), cs.size() - 1);
+		if (err != OK) {
+			ERR_FAIL();
+		}
+
+		while (true) {
+			uint8_t bytes[4096];
+			uint64_t read = f->get_buffer(bytes, 4096);
+			if (read == 0) {
+				break;
+			}
+			err = peer->put_data(bytes, read);
+			if (err != OK) {
+				ERR_FAIL();
+			}
+		}
+	}
+
+	void poll() {
+		if (!server->is_listening()) {
+			return;
+		}
+		if (tcp.is_null()) {
+			if (!server->is_connection_available()) {
+				return;
+			}
+			tcp = server->take_connection();
+			peer = tcp;
+			time = OS::get_singleton()->get_ticks_usec();
+		}
+		if (OS::get_singleton()->get_ticks_usec() - time > 1000000) {
+			_clear_client();
+			return;
+		}
+		if (tcp->get_status() != StreamPeerTCP::STATUS_CONNECTED) {
+			return;
+		}
+
+		if (use_ssl) {
+			if (ssl.is_null()) {
+				ssl = Ref<StreamPeerSSL>(StreamPeerSSL::create());
+				peer = ssl;
+				ssl->set_blocking_handshake_enabled(false);
+				if (ssl->accept_stream(tcp, key, cert) != OK) {
+					_clear_client();
+					return;
+				}
+			}
+			ssl->poll();
+			if (ssl->get_status() == StreamPeerSSL::STATUS_HANDSHAKING) {
+				// Still handshaking, keep waiting.
+				return;
+			}
+			if (ssl->get_status() != StreamPeerSSL::STATUS_CONNECTED) {
+				_clear_client();
+				return;
+			}
+		}
+
+		while (true) {
+			char *r = (char *)req_buf;
+			int l = req_pos - 1;
+			if (l > 3 && r[l] == '\n' && r[l - 1] == '\r' && r[l - 2] == '\n' && r[l - 3] == '\r') {
+				_send_response();
+				_clear_client();
+				return;
+			}
+
+			int read = 0;
+			ERR_FAIL_COND(req_pos >= 4096);
+			Error err = peer->get_partial_data(&req_buf[req_pos], 1, read);
+			if (err != OK) {
+				// Got an error
+				_clear_client();
+				return;
+			} else if (read != 1) {
+				// Busy, wait next poll
+				return;
+			}
+			req_pos += read;
+		}
+	}
+};
+
+#endif // WEB_EDITOR_HTTP_SERVER_H
diff --git a/platform/web/export/export.cpp b/platform/web/export/export.cpp
new file mode 100644
index 0000000000..3d40f2c10d
--- /dev/null
+++ b/platform/web/export/export.cpp
@@ -0,0 +1,49 @@
+/*************************************************************************/
+/*  export.cpp                                                           */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "export.h"
+
+#include "editor/editor_settings.h"
+#include "export_plugin.h"
+
+void register_web_exporter() {
+	EDITOR_DEF("export/web/http_host", "localhost");
+	EDITOR_DEF("export/web/http_port", 8060);
+	EDITOR_DEF("export/web/use_ssl", false);
+	EDITOR_DEF("export/web/ssl_key", "");
+	EDITOR_DEF("export/web/ssl_certificate", "");
+	EditorSettings::get_singleton()->add_property_hint(PropertyInfo(Variant::INT, "export/web/http_port", PROPERTY_HINT_RANGE, "1,65535,1"));
+	EditorSettings::get_singleton()->add_property_hint(PropertyInfo(Variant::STRING, "export/web/ssl_key", PROPERTY_HINT_GLOBAL_FILE, "*.key"));
+	EditorSettings::get_singleton()->add_property_hint(PropertyInfo(Variant::STRING, "export/web/ssl_certificate", PROPERTY_HINT_GLOBAL_FILE, "*.crt,*.pem"));
+
+	Ref<EditorExportPlatformWeb> platform;
+	platform.instantiate();
+	EditorExport::get_singleton()->add_export_platform(platform);
+}
diff --git a/platform/web/export/export.h b/platform/web/export/export.h
new file mode 100644
index 0000000000..7947f292a4
--- /dev/null
+++ b/platform/web/export/export.h
@@ -0,0 +1,36 @@
+/*************************************************************************/
+/*  export.h                                                             */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef WEB_EXPORT_H
+#define WEB_EXPORT_H
+
+void register_web_exporter();
+
+#endif // WEB_EXPORT_H
diff --git a/platform/web/export/export_plugin.cpp b/platform/web/export/export_plugin.cpp
new file mode 100644
index 0000000000..996d1db2e7
--- /dev/null
+++ b/platform/web/export/export_plugin.cpp
@@ -0,0 +1,700 @@
+/*************************************************************************/
+/*  export_plugin.cpp                                                    */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "export_plugin.h"
+
+#include "core/config/project_settings.h"
+#include "editor/editor_settings.h"
+
+Error EditorExportPlatformWeb::_extract_template(const String &p_template, const String &p_dir, const String &p_name, bool pwa) {
+	Ref<FileAccess> io_fa;
+	zlib_filefunc_def io = zipio_create_io(&io_fa);
+	unzFile pkg = unzOpen2(p_template.utf8().get_data(), &io);
+
+	if (!pkg) {
+		add_message(EXPORT_MESSAGE_ERROR, TTR("Prepare Templates"), vformat(TTR("Could not open template for export: \"%s\"."), p_template));
+		return ERR_FILE_NOT_FOUND;
+	}
+
+	if (unzGoToFirstFile(pkg) != UNZ_OK) {
+		add_message(EXPORT_MESSAGE_ERROR, TTR("Prepare Templates"), vformat(TTR("Invalid export template: \"%s\"."), p_template));
+		unzClose(pkg);
+		return ERR_FILE_CORRUPT;
+	}
+
+	do {
+		//get filename
+		unz_file_info info;
+		char fname[16384];
+		unzGetCurrentFileInfo(pkg, &info, fname, 16384, nullptr, 0, nullptr, 0);
+
+		String file = String::utf8(fname);
+
+		// Skip folders.
+		if (file.ends_with("/")) {
+			continue;
+		}
+
+		// Skip service worker and offline page if not exporting pwa.
+		if (!pwa && (file == "godot.service.worker.js" || file == "godot.offline.html")) {
+			continue;
+		}
+		Vector<uint8_t> data;
+		data.resize(info.uncompressed_size);
+
+		//read
+		unzOpenCurrentFile(pkg);
+		unzReadCurrentFile(pkg, data.ptrw(), data.size());
+		unzCloseCurrentFile(pkg);
+
+		//write
+		String dst = p_dir.plus_file(file.replace("godot", p_name));
+		Ref<FileAccess> f = FileAccess::open(dst, FileAccess::WRITE);
+		if (f.is_null()) {
+			add_message(EXPORT_MESSAGE_ERROR, TTR("Prepare Templates"), vformat(TTR("Could not write file: \"%s\"."), dst));
+			unzClose(pkg);
+			return ERR_FILE_CANT_WRITE;
+		}
+		f->store_buffer(data.ptr(), data.size());
+
+	} while (unzGoToNextFile(pkg) == UNZ_OK);
+	unzClose(pkg);
+	return OK;
+}
+
+Error EditorExportPlatformWeb::_write_or_error(const uint8_t *p_content, int p_size, String p_path) {
+	Ref<FileAccess> f = FileAccess::open(p_path, FileAccess::WRITE);
+	if (f.is_null()) {
+		add_message(EXPORT_MESSAGE_ERROR, TTR("Export"), vformat(TTR("Could not write file: \"%s\"."), p_path));
+		return ERR_FILE_CANT_WRITE;
+	}
+	f->store_buffer(p_content, p_size);
+	return OK;
+}
+
+void EditorExportPlatformWeb::_replace_strings(HashMap<String, String> p_replaces, Vector<uint8_t> &r_template) {
+	String str_template = String::utf8(reinterpret_cast<const char *>(r_template.ptr()), r_template.size());
+	String out;
+	Vector<String> lines = str_template.split("\n");
+	for (int i = 0; i < lines.size(); i++) {
+		String current_line = lines[i];
+		for (const KeyValue<String, String> &E : p_replaces) {
+			current_line = current_line.replace(E.key, E.value);
+		}
+		out += current_line + "\n";
+	}
+	CharString cs = out.utf8();
+	r_template.resize(cs.length());
+	for (int i = 0; i < cs.length(); i++) {
+		r_template.write[i] = cs[i];
+	}
+}
+
+void EditorExportPlatformWeb::_fix_html(Vector<uint8_t> &p_html, const Ref<EditorExportPreset> &p_preset, const String &p_name, bool p_debug, int p_flags, const Vector<SharedObject> p_shared_objects, const Dictionary &p_file_sizes) {
+	// Engine.js config
+	Dictionary config;
+	Array libs;
+	for (int i = 0; i < p_shared_objects.size(); i++) {
+		libs.push_back(p_shared_objects[i].path.get_file());
+	}
+	Vector<String> flags;
+	gen_export_flags(flags, p_flags & (~DEBUG_FLAG_DUMB_CLIENT));
+	Array args;
+	for (int i = 0; i < flags.size(); i++) {
+		args.push_back(flags[i]);
+	}
+	config["canvasResizePolicy"] = p_preset->get("html/canvas_resize_policy");
+	config["experimentalVK"] = p_preset->get("html/experimental_virtual_keyboard");
+	config["focusCanvas"] = p_preset->get("html/focus_canvas_on_start");
+	config["gdnativeLibs"] = libs;
+	config["executable"] = p_name;
+	config["args"] = args;
+	config["fileSizes"] = p_file_sizes;
+
+	String head_include;
+	if (p_preset->get("html/export_icon")) {
+		head_include += "<link id='-gd-engine-icon' rel='icon' type='image/png' href='" + p_name + ".icon.png' />\n";
+		head_include += "<link rel='apple-touch-icon' href='" + p_name + ".apple-touch-icon.png'/>\n";
+	}
+	if (p_preset->get("progressive_web_app/enabled")) {
+		head_include += "<link rel='manifest' href='" + p_name + ".manifest.json'>\n";
+		config["serviceWorker"] = p_name + ".service.worker.js";
+	}
+
+	// Replaces HTML string
+	const String str_config = Variant(config).to_json_string();
+	const String custom_head_include = p_preset->get("html/head_include");
+	HashMap<String, String> replaces;
+	replaces["$GODOT_URL"] = p_name + ".js";
+	replaces["$GODOT_PROJECT_NAME"] = ProjectSettings::get_singleton()->get_setting("application/config/name");
+	replaces["$GODOT_HEAD_INCLUDE"] = head_include + custom_head_include;
+	replaces["$GODOT_CONFIG"] = str_config;
+	_replace_strings(replaces, p_html);
+}
+
+Error EditorExportPlatformWeb::_add_manifest_icon(const String &p_path, const String &p_icon, int p_size, Array &r_arr) {
+	const String name = p_path.get_file().get_basename();
+	const String icon_name = vformat("%s.%dx%d.png", name, p_size, p_size);
+	const String icon_dest = p_path.get_base_dir().plus_file(icon_name);
+
+	Ref<Image> icon;
+	if (!p_icon.is_empty()) {
+		icon.instantiate();
+		const Error err = ImageLoader::load_image(p_icon, icon);
+		if (err != OK) {
+			add_message(EXPORT_MESSAGE_ERROR, TTR("Icon Creation"), vformat(TTR("Could not read file: \"%s\"."), p_icon));
+			return err;
+		}
+		if (icon->get_width() != p_size || icon->get_height() != p_size) {
+			icon->resize(p_size, p_size);
+		}
+	} else {
+		icon = _get_project_icon();
+		icon->resize(p_size, p_size);
+	}
+	const Error err = icon->save_png(icon_dest);
+	if (err != OK) {
+		add_message(EXPORT_MESSAGE_ERROR, TTR("Icon Creation"), vformat(TTR("Could not write file: \"%s\"."), icon_dest));
+		return err;
+	}
+	Dictionary icon_dict;
+	icon_dict["sizes"] = vformat("%dx%d", p_size, p_size);
+	icon_dict["type"] = "image/png";
+	icon_dict["src"] = icon_name;
+	r_arr.push_back(icon_dict);
+	return err;
+}
+
+Error EditorExportPlatformWeb::_build_pwa(const Ref<EditorExportPreset> &p_preset, const String p_path, const Vector<SharedObject> &p_shared_objects) {
+	String proj_name = ProjectSettings::get_singleton()->get_setting("application/config/name");
+	if (proj_name.is_empty()) {
+		proj_name = "Godot Game";
+	}
+
+	// Service worker
+	const String dir = p_path.get_base_dir();
+	const String name = p_path.get_file().get_basename();
+	const ExportMode mode = (ExportMode)(int)p_preset->get("variant/export_type");
+	HashMap<String, String> replaces;
+	replaces["@GODOT_VERSION@"] = String::num_int64(OS::get_singleton()->get_unix_time()) + "|" + String::num_int64(OS::get_singleton()->get_ticks_usec());
+	replaces["@GODOT_NAME@"] = proj_name.substr(0, 16);
+	replaces["@GODOT_OFFLINE_PAGE@"] = name + ".offline.html";
+
+	// Files cached during worker install.
+	Array cache_files;
+	cache_files.push_back(name + ".html");
+	cache_files.push_back(name + ".js");
+	cache_files.push_back(name + ".offline.html");
+	if (p_preset->get("html/export_icon")) {
+		cache_files.push_back(name + ".icon.png");
+		cache_files.push_back(name + ".apple-touch-icon.png");
+	}
+	if (mode & EXPORT_MODE_THREADS) {
+		cache_files.push_back(name + ".worker.js");
+		cache_files.push_back(name + ".audio.worklet.js");
+	}
+	replaces["@GODOT_CACHE@"] = Variant(cache_files).to_json_string();
+
+	// Heavy files that are cached on demand.
+	Array opt_cache_files;
+	opt_cache_files.push_back(name + ".wasm");
+	opt_cache_files.push_back(name + ".pck");
+	if (mode & EXPORT_MODE_GDNATIVE) {
+		opt_cache_files.push_back(name + ".side.wasm");
+		for (int i = 0; i < p_shared_objects.size(); i++) {
+			opt_cache_files.push_back(p_shared_objects[i].path.get_file());
+		}
+	}
+	replaces["@GODOT_OPT_CACHE@"] = Variant(opt_cache_files).to_json_string();
+
+	const String sw_path = dir.plus_file(name + ".service.worker.js");
+	Vector<uint8_t> sw;
+	{
+		Ref<FileAccess> f = FileAccess::open(sw_path, FileAccess::READ);
+		if (f.is_null()) {
+			add_message(EXPORT_MESSAGE_ERROR, TTR("PWA"), vformat(TTR("Could not read file: \"%s\"."), sw_path));
+			return ERR_FILE_CANT_READ;
+		}
+		sw.resize(f->get_length());
+		f->get_buffer(sw.ptrw(), sw.size());
+	}
+	_replace_strings(replaces, sw);
+	Error err = _write_or_error(sw.ptr(), sw.size(), dir.plus_file(name + ".service.worker.js"));
+	if (err != OK) {
+		return err;
+	}
+
+	// Custom offline page
+	const String offline_page = p_preset->get("progressive_web_app/offline_page");
+	if (!offline_page.is_empty()) {
+		Ref<DirAccess> da = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
+		const String offline_dest = dir.plus_file(name + ".offline.html");
+		err = da->copy(ProjectSettings::get_singleton()->globalize_path(offline_page), offline_dest);
+		if (err != OK) {
+			add_message(EXPORT_MESSAGE_ERROR, TTR("PWA"), vformat(TTR("Could not read file: \"%s\"."), offline_dest));
+			return err;
+		}
+	}
+
+	// Manifest
+	const char *modes[4] = { "fullscreen", "standalone", "minimal-ui", "browser" };
+	const char *orientations[3] = { "any", "landscape", "portrait" };
+	const int display = CLAMP(int(p_preset->get("progressive_web_app/display")), 0, 4);
+	const int orientation = CLAMP(int(p_preset->get("progressive_web_app/orientation")), 0, 3);
+
+	Dictionary manifest;
+	manifest["name"] = proj_name;
+	manifest["start_url"] = "./" + name + ".html";
+	manifest["display"] = String::utf8(modes[display]);
+	manifest["orientation"] = String::utf8(orientations[orientation]);
+	manifest["background_color"] = "#" + p_preset->get("progressive_web_app/background_color").operator Color().to_html(false);
+
+	Array icons_arr;
+	const String icon144_path = p_preset->get("progressive_web_app/icon_144x144");
+	err = _add_manifest_icon(p_path, icon144_path, 144, icons_arr);
+	if (err != OK) {
+		return err;
+	}
+	const String icon180_path = p_preset->get("progressive_web_app/icon_180x180");
+	err = _add_manifest_icon(p_path, icon180_path, 180, icons_arr);
+	if (err != OK) {
+		return err;
+	}
+	const String icon512_path = p_preset->get("progressive_web_app/icon_512x512");
+	err = _add_manifest_icon(p_path, icon512_path, 512, icons_arr);
+	if (err != OK) {
+		return err;
+	}
+	manifest["icons"] = icons_arr;
+
+	CharString cs = Variant(manifest).to_json_string().utf8();
+	err = _write_or_error((const uint8_t *)cs.get_data(), cs.length(), dir.plus_file(name + ".manifest.json"));
+	if (err != OK) {
+		return err;
+	}
+
+	return OK;
+}
+
+void EditorExportPlatformWeb::get_preset_features(const Ref<EditorExportPreset> &p_preset, List<String> *r_features) const {
+	if (p_preset->get("vram_texture_compression/for_desktop")) {
+		r_features->push_back("s3tc");
+	}
+
+	if (p_preset->get("vram_texture_compression/for_mobile")) {
+		String driver = ProjectSettings::get_singleton()->get("rendering/driver/driver_name");
+		if (driver == "opengl3") {
+			r_features->push_back("etc");
+		} else if (driver == "vulkan") {
+			// FIXME: Review if this is correct.
+			r_features->push_back("etc2");
+		}
+	}
+	ExportMode mode = (ExportMode)(int)p_preset->get("variant/export_type");
+	if (mode & EXPORT_MODE_THREADS) {
+		r_features->push_back("threads");
+	}
+	if (mode & EXPORT_MODE_GDNATIVE) {
+		r_features->push_back("wasm32");
+	}
+}
+
+void EditorExportPlatformWeb::get_export_options(List<ExportOption> *r_options) {
+	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "custom_template/debug", PROPERTY_HINT_GLOBAL_FILE, "*.zip"), ""));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "custom_template/release", PROPERTY_HINT_GLOBAL_FILE, "*.zip"), ""));
+
+	r_options->push_back(ExportOption(PropertyInfo(Variant::INT, "variant/export_type", PROPERTY_HINT_ENUM, "Regular,Threads,GDNative"), 0)); // Export type.
+	r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "vram_texture_compression/for_desktop"), true)); // S3TC
+	r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "vram_texture_compression/for_mobile"), false)); // ETC or ETC2, depending on renderer
+
+	r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "html/export_icon"), true));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "html/custom_html_shell", PROPERTY_HINT_FILE, "*.html"), ""));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "html/head_include", PROPERTY_HINT_MULTILINE_TEXT), ""));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::INT, "html/canvas_resize_policy", PROPERTY_HINT_ENUM, "None,Project,Adaptive"), 2));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "html/focus_canvas_on_start"), true));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "html/experimental_virtual_keyboard"), false));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::BOOL, "progressive_web_app/enabled"), false));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "progressive_web_app/offline_page", PROPERTY_HINT_FILE, "*.html"), ""));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::INT, "progressive_web_app/display", PROPERTY_HINT_ENUM, "Fullscreen,Standalone,Minimal UI,Browser"), 1));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::INT, "progressive_web_app/orientation", PROPERTY_HINT_ENUM, "Any,Landscape,Portrait"), 0));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "progressive_web_app/icon_144x144", PROPERTY_HINT_FILE, "*.png,*.webp,*.svg"), ""));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "progressive_web_app/icon_180x180", PROPERTY_HINT_FILE, "*.png,*.webp,*.svg"), ""));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::STRING, "progressive_web_app/icon_512x512", PROPERTY_HINT_FILE, "*.png,*.webp,*.svg"), ""));
+	r_options->push_back(ExportOption(PropertyInfo(Variant::COLOR, "progressive_web_app/background_color", PROPERTY_HINT_COLOR_NO_ALPHA), Color()));
+}
+
+String EditorExportPlatformWeb::get_name() const {
+	return "Web";
+}
+
+String EditorExportPlatformWeb::get_os_name() const {
+	return "Web";
+}
+
+Ref<Texture2D> EditorExportPlatformWeb::get_logo() const {
+	return logo;
+}
+
+bool EditorExportPlatformWeb::has_valid_export_configuration(const Ref<EditorExportPreset> &p_preset, String &r_error, bool &r_missing_templates) const {
+#ifndef DEV_ENABLED
+	// We don't provide export templates for the Web platform currently as there
+	// is no suitable renderer to use with them. So we forbid exporting and tell
+	// users why. This is skipped in DEV_ENABLED so that contributors can still test
+	// the pipeline once we start having WebGL or WebGPU support.
+	r_error = "The Web platform is currently not supported in Godot 4.0, as there is no suitable renderer for it.\n";
+	return false;
+#endif
+
+	String err;
+	bool valid = false;
+	ExportMode mode = (ExportMode)(int)p_preset->get("variant/export_type");
+
+	// Look for export templates (first official, and if defined custom templates).
+	bool dvalid = exists_export_template(_get_template_name(mode, true), &err);
+	bool rvalid = exists_export_template(_get_template_name(mode, false), &err);
+
+	if (p_preset->get("custom_template/debug") != "") {
+		dvalid = FileAccess::exists(p_preset->get("custom_template/debug"));
+		if (!dvalid) {
+			err += TTR("Custom debug template not found.") + "\n";
+		}
+	}
+	if (p_preset->get("custom_template/release") != "") {
+		rvalid = FileAccess::exists(p_preset->get("custom_template/release"));
+		if (!rvalid) {
+			err += TTR("Custom release template not found.") + "\n";
+		}
+	}
+
+	valid = dvalid || rvalid;
+	r_missing_templates = !valid;
+
+	if (!err.is_empty()) {
+		r_error = err;
+	}
+
+	return valid;
+}
+
+bool EditorExportPlatformWeb::has_valid_project_configuration(const Ref<EditorExportPreset> &p_preset, String &r_error) const {
+#ifndef DEV_ENABLED
+	// We don't provide export templates for the Web platform currently as there
+	// is no suitable renderer to use with them. So we forbid exporting and tell
+	// users why. This is skipped in DEV_ENABLED so that contributors can still test
+	// the pipeline once we start having WebGL or WebGPU support.
+	r_error = "The Web platform is currently not supported in Godot 4.0, as there is no suitable renderer for it.\n";
+	return false;
+#endif
+
+	String err;
+	bool valid = true;
+
+	// Validate the project configuration.
+
+	if (p_preset->get("vram_texture_compression/for_mobile")) {
+		String etc_error = test_etc2();
+		if (!etc_error.is_empty()) {
+			valid = false;
+			err += etc_error;
+		}
+	}
+
+	if (!err.is_empty()) {
+		r_error = err;
+	}
+
+	return valid;
+}
+
+List<String> EditorExportPlatformWeb::get_binary_extensions(const Ref<EditorExportPreset> &p_preset) const {
+	List<String> list;
+	list.push_back("html");
+	return list;
+}
+
+Error EditorExportPlatformWeb::export_project(const Ref<EditorExportPreset> &p_preset, bool p_debug, const String &p_path, int p_flags) {
+	ExportNotifier notifier(*this, p_preset, p_debug, p_path, p_flags);
+
+	const String custom_debug = p_preset->get("custom_template/debug");
+	const String custom_release = p_preset->get("custom_template/release");
+	const String custom_html = p_preset->get("html/custom_html_shell");
+	const bool export_icon = p_preset->get("html/export_icon");
+	const bool pwa = p_preset->get("progressive_web_app/enabled");
+
+	const String base_dir = p_path.get_base_dir();
+	const String base_path = p_path.get_basename();
+	const String base_name = p_path.get_file().get_basename();
+
+	// Find the correct template
+	String template_path = p_debug ? custom_debug : custom_release;
+	template_path = template_path.strip_edges();
+	if (template_path.is_empty()) {
+		ExportMode mode = (ExportMode)(int)p_preset->get("variant/export_type");
+		template_path = find_export_template(_get_template_name(mode, p_debug));
+	}
+
+	if (!DirAccess::exists(base_dir)) {
+		return ERR_FILE_BAD_PATH;
+	}
+
+	if (!template_path.is_empty() && !FileAccess::exists(template_path)) {
+		add_message(EXPORT_MESSAGE_ERROR, TTR("Prepare Templates"), vformat(TTR("Template file not found: \"%s\"."), template_path));
+		return ERR_FILE_NOT_FOUND;
+	}
+
+	// Export pck and shared objects
+	Vector<SharedObject> shared_objects;
+	String pck_path = base_path + ".pck";
+	Error error = save_pack(p_preset, p_debug, pck_path, &shared_objects);
+	if (error != OK) {
+		add_message(EXPORT_MESSAGE_ERROR, TTR("Export"), vformat(TTR("Could not write file: \"%s\"."), pck_path));
+		return error;
+	}
+
+	{
+		Ref<DirAccess> da = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
+		for (int i = 0; i < shared_objects.size(); i++) {
+			String dst = base_dir.plus_file(shared_objects[i].path.get_file());
+			error = da->copy(shared_objects[i].path, dst);
+			if (error != OK) {
+				add_message(EXPORT_MESSAGE_ERROR, TTR("Export"), vformat(TTR("Could not write file: \"%s\"."), shared_objects[i].path.get_file()));
+				return error;
+			}
+		}
+	}
+
+	// Extract templates.
+	error = _extract_template(template_path, base_dir, base_name, pwa);
+	if (error) {
+		return error;
+	}
+
+	// Parse generated file sizes (pck and wasm, to help show a meaningful loading bar).
+	Dictionary file_sizes;
+	Ref<FileAccess> f = FileAccess::open(pck_path, FileAccess::READ);
+	if (f.is_valid()) {
+		file_sizes[pck_path.get_file()] = (uint64_t)f->get_length();
+	}
+	f = FileAccess::open(base_path + ".wasm", FileAccess::READ);
+	if (f.is_valid()) {
+		file_sizes[base_name + ".wasm"] = (uint64_t)f->get_length();
+	}
+
+	// Read the HTML shell file (custom or from template).
+	const String html_path = custom_html.is_empty() ? base_path + ".html" : custom_html;
+	Vector<uint8_t> html;
+	f = FileAccess::open(html_path, FileAccess::READ);
+	if (f.is_null()) {
+		add_message(EXPORT_MESSAGE_ERROR, TTR("Export"), vformat(TTR("Could not read HTML shell: \"%s\"."), html_path));
+		return ERR_FILE_CANT_READ;
+	}
+	html.resize(f->get_length());
+	f->get_buffer(html.ptrw(), html.size());
+
+	// Generate HTML file with replaced strings.
+	_fix_html(html, p_preset, base_name, p_debug, p_flags, shared_objects, file_sizes);
+	Error err = _write_or_error(html.ptr(), html.size(), p_path);
+	if (err != OK) {
+		return err;
+	}
+	html.resize(0);
+
+	// Export splash (why?)
+	Ref<Image> splash = _get_project_splash();
+	const String splash_png_path = base_path + ".png";
+	if (splash->save_png(splash_png_path) != OK) {
+		add_message(EXPORT_MESSAGE_ERROR, TTR("Export"), vformat(TTR("Could not write file: \"%s\"."), splash_png_path));
+		return ERR_FILE_CANT_WRITE;
+	}
+
+	// Save a favicon that can be accessed without waiting for the project to finish loading.
+	// This way, the favicon can be displayed immediately when loading the page.
+	if (export_icon) {
+		Ref<Image> favicon = _get_project_icon();
+		const String favicon_png_path = base_path + ".icon.png";
+		if (favicon->save_png(favicon_png_path) != OK) {
+			add_message(EXPORT_MESSAGE_ERROR, TTR("Export"), vformat(TTR("Could not write file: \"%s\"."), favicon_png_path));
+			return ERR_FILE_CANT_WRITE;
+		}
+		favicon->resize(180, 180);
+		const String apple_icon_png_path = base_path + ".apple-touch-icon.png";
+		if (favicon->save_png(apple_icon_png_path) != OK) {
+			add_message(EXPORT_MESSAGE_ERROR, TTR("Export"), vformat(TTR("Could not write file: \"%s\"."), apple_icon_png_path));
+			return ERR_FILE_CANT_WRITE;
+		}
+	}
+
+	// Generate the PWA worker and manifest
+	if (pwa) {
+		err = _build_pwa(p_preset, p_path, shared_objects);
+		if (err != OK) {
+			return err;
+		}
+	}
+
+	return OK;
+}
+
+bool EditorExportPlatformWeb::poll_export() {
+	Ref<EditorExportPreset> preset;
+
+	for (int i = 0; i < EditorExport::get_singleton()->get_export_preset_count(); i++) {
+		Ref<EditorExportPreset> ep = EditorExport::get_singleton()->get_export_preset(i);
+		if (ep->is_runnable() && ep->get_platform() == this) {
+			preset = ep;
+			break;
+		}
+	}
+
+	int prev = menu_options;
+	menu_options = preset.is_valid();
+	if (server->is_listening()) {
+		if (menu_options == 0) {
+			MutexLock lock(server_lock);
+			server->stop();
+		} else {
+			menu_options += 1;
+		}
+	}
+	return menu_options != prev;
+}
+
+Ref<ImageTexture> EditorExportPlatformWeb::get_option_icon(int p_index) const {
+	return p_index == 1 ? stop_icon : EditorExportPlatform::get_option_icon(p_index);
+}
+
+int EditorExportPlatformWeb::get_options_count() const {
+	return menu_options;
+}
+
+Error EditorExportPlatformWeb::run(const Ref<EditorExportPreset> &p_preset, int p_option, int p_debug_flags) {
+	if (p_option == 1) {
+		MutexLock lock(server_lock);
+		server->stop();
+		return OK;
+	}
+
+	const String dest = EditorPaths::get_singleton()->get_cache_dir().plus_file("web");
+	Ref<DirAccess> da = DirAccess::create(DirAccess::ACCESS_FILESYSTEM);
+	if (!da->dir_exists(dest)) {
+		Error err = da->make_dir_recursive(dest);
+		if (err != OK) {
+			add_message(EXPORT_MESSAGE_ERROR, TTR("Run"), vformat(TTR("Could not create HTTP server directory: %s."), dest));
+			return err;
+		}
+	}
+
+	const String basepath = dest.plus_file("tmp_js_export");
+	Error err = export_project(p_preset, true, basepath + ".html", p_debug_flags);
+	if (err != OK) {
+		// Export generates several files, clean them up on failure.
+		DirAccess::remove_file_or_error(basepath + ".html");
+		DirAccess::remove_file_or_error(basepath + ".offline.html");
+		DirAccess::remove_file_or_error(basepath + ".js");
+		DirAccess::remove_file_or_error(basepath + ".worker.js");
+		DirAccess::remove_file_or_error(basepath + ".audio.worklet.js");
+		DirAccess::remove_file_or_error(basepath + ".service.worker.js");
+		DirAccess::remove_file_or_error(basepath + ".pck");
+		DirAccess::remove_file_or_error(basepath + ".png");
+		DirAccess::remove_file_or_error(basepath + ".side.wasm");
+		DirAccess::remove_file_or_error(basepath + ".wasm");
+		DirAccess::remove_file_or_error(basepath + ".icon.png");
+		DirAccess::remove_file_or_error(basepath + ".apple-touch-icon.png");
+		return err;
+	}
+
+	const uint16_t bind_port = EDITOR_GET("export/web/http_port");
+	// Resolve host if needed.
+	const String bind_host = EDITOR_GET("export/web/http_host");
+	IPAddress bind_ip;
+	if (bind_host.is_valid_ip_address()) {
+		bind_ip = bind_host;
+	} else {
+		bind_ip = IP::get_singleton()->resolve_hostname(bind_host);
+	}
+	ERR_FAIL_COND_V_MSG(!bind_ip.is_valid(), ERR_INVALID_PARAMETER, "Invalid editor setting 'export/web/http_host': '" + bind_host + "'. Try using '127.0.0.1'.");
+
+	const bool use_ssl = EDITOR_GET("export/web/use_ssl");
+	const String ssl_key = EDITOR_GET("export/web/ssl_key");
+	const String ssl_cert = EDITOR_GET("export/web/ssl_certificate");
+
+	// Restart server.
+	{
+		MutexLock lock(server_lock);
+
+		server->stop();
+		err = server->listen(bind_port, bind_ip, use_ssl, ssl_key, ssl_cert);
+	}
+	if (err != OK) {
+		add_message(EXPORT_MESSAGE_ERROR, TTR("Run"), vformat(TTR("Error starting HTTP server: %d."), err));
+		return err;
+	}
+
+	OS::get_singleton()->shell_open(String((use_ssl ? "https://" : "http://") + bind_host + ":" + itos(bind_port) + "/tmp_js_export.html"));
+	// FIXME: Find out how to clean up export files after running the successfully
+	// exported game. Might not be trivial.
+	return OK;
+}
+
+Ref<Texture2D> EditorExportPlatformWeb::get_run_icon() const {
+	return run_icon;
+}
+
+void EditorExportPlatformWeb::_server_thread_poll(void *data) {
+	EditorExportPlatformWeb *ej = static_cast<EditorExportPlatformWeb *>(data);
+	while (!ej->server_quit) {
+		OS::get_singleton()->delay_usec(6900);
+		{
+			MutexLock lock(ej->server_lock);
+			ej->server->poll();
+		}
+	}
+}
+
+EditorExportPlatformWeb::EditorExportPlatformWeb() {
+	server.instantiate();
+	server_thread.start(_server_thread_poll, this);
+
+	logo = ImageTexture::create_from_image(memnew(Image(_web_logo)));
+	run_icon = ImageTexture::create_from_image(memnew(Image(_web_run_icon)));
+
+	Ref<Theme> theme = EditorNode::get_singleton()->get_editor_theme();
+	if (theme.is_valid()) {
+		stop_icon = theme->get_icon(SNAME("Stop"), SNAME("EditorIcons"));
+	} else {
+		stop_icon.instantiate();
+	}
+}
+
+EditorExportPlatformWeb::~EditorExportPlatformWeb() {
+	server->stop();
+	server_quit = true;
+	server_thread.wait_to_finish();
+}
diff --git a/platform/web/export/export_plugin.h b/platform/web/export/export_plugin.h
new file mode 100644
index 0000000000..9c1bf2a5ef
--- /dev/null
+++ b/platform/web/export/export_plugin.h
@@ -0,0 +1,148 @@
+/*************************************************************************/
+/*  export_plugin.h                                                      */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef WEB_EXPORT_PLUGIN_H
+#define WEB_EXPORT_PLUGIN_H
+
+#include "core/config/project_settings.h"
+#include "core/io/image_loader.h"
+#include "core/io/stream_peer_ssl.h"
+#include "core/io/tcp_server.h"
+#include "core/io/zip_io.h"
+#include "editor/editor_node.h"
+#include "editor/export/editor_export_platform.h"
+#include "main/splash.gen.h"
+#include "platform/web/logo.gen.h"
+#include "platform/web/run_icon.gen.h"
+
+#include "editor_http_server.h"
+
+class EditorExportPlatformWeb : public EditorExportPlatform {
+	GDCLASS(EditorExportPlatformWeb, EditorExportPlatform);
+
+	Ref<ImageTexture> logo;
+	Ref<ImageTexture> run_icon;
+	Ref<ImageTexture> stop_icon;
+	int menu_options = 0;
+
+	Ref<EditorHTTPServer> server;
+	bool server_quit = false;
+	Mutex server_lock;
+	Thread server_thread;
+
+	enum ExportMode {
+		EXPORT_MODE_NORMAL = 0,
+		EXPORT_MODE_THREADS = 1,
+		EXPORT_MODE_GDNATIVE = 2,
+		EXPORT_MODE_THREADS_GDNATIVE = 3,
+	};
+
+	String _get_template_name(ExportMode p_mode, bool p_debug) const {
+		String name = "webassembly";
+		if (p_mode & EXPORT_MODE_GDNATIVE) {
+			name += "_gdnative";
+		}
+		if (p_mode & EXPORT_MODE_THREADS) {
+			name += "_threads";
+		}
+		if (p_debug) {
+			name += "_debug.zip";
+		} else {
+			name += "_release.zip";
+		}
+		return name;
+	}
+
+	Ref<Image> _get_project_icon() const {
+		Ref<Image> icon;
+		icon.instantiate();
+		const String icon_path = String(GLOBAL_GET("application/config/icon")).strip_edges();
+		if (icon_path.is_empty() || ImageLoader::load_image(icon_path, icon) != OK) {
+			return EditorNode::get_singleton()->get_editor_theme()->get_icon(SNAME("DefaultProjectIcon"), SNAME("EditorIcons"))->get_image();
+		}
+		return icon;
+	}
+
+	Ref<Image> _get_project_splash() const {
+		Ref<Image> splash;
+		splash.instantiate();
+		const String splash_path = String(GLOBAL_GET("application/boot_splash/image")).strip_edges();
+		if (splash_path.is_empty() || ImageLoader::load_image(splash_path, splash) != OK) {
+			return Ref<Image>(memnew(Image(boot_splash_png)));
+		}
+		return splash;
+	}
+
+	Error _extract_template(const String &p_template, const String &p_dir, const String &p_name, bool pwa);
+	void _replace_strings(HashMap<String, String> p_replaces, Vector<uint8_t> &r_template);
+	void _fix_html(Vector<uint8_t> &p_html, const Ref<EditorExportPreset> &p_preset, const String &p_name, bool p_debug, int p_flags, const Vector<SharedObject> p_shared_objects, const Dictionary &p_file_sizes);
+	Error _add_manifest_icon(const String &p_path, const String &p_icon, int p_size, Array &r_arr);
+	Error _build_pwa(const Ref<EditorExportPreset> &p_preset, const String p_path, const Vector<SharedObject> &p_shared_objects);
+	Error _write_or_error(const uint8_t *p_content, int p_len, String p_path);
+
+	static void _server_thread_poll(void *data);
+
+public:
+	virtual void get_preset_features(const Ref<EditorExportPreset> &p_preset, List<String> *r_features) const override;
+
+	virtual void get_export_options(List<ExportOption> *r_options) override;
+
+	virtual String get_name() const override;
+	virtual String get_os_name() const override;
+	virtual Ref<Texture2D> get_logo() const override;
+
+	virtual bool has_valid_export_configuration(const Ref<EditorExportPreset> &p_preset, String &r_error, bool &r_missing_templates) const override;
+	virtual bool has_valid_project_configuration(const Ref<EditorExportPreset> &p_preset, String &r_error) const override;
+	virtual List<String> get_binary_extensions(const Ref<EditorExportPreset> &p_preset) const override;
+	virtual Error export_project(const Ref<EditorExportPreset> &p_preset, bool p_debug, const String &p_path, int p_flags = 0) override;
+
+	virtual bool poll_export() override;
+	virtual int get_options_count() const override;
+	virtual String get_option_label(int p_index) const override { return p_index ? TTR("Stop HTTP Server") : TTR("Run in Browser"); }
+	virtual String get_option_tooltip(int p_index) const override { return p_index ? TTR("Stop HTTP Server") : TTR("Run exported HTML in the system's default browser."); }
+	virtual Ref<ImageTexture> get_option_icon(int p_index) const override;
+	virtual Error run(const Ref<EditorExportPreset> &p_preset, int p_option, int p_debug_flags) override;
+	virtual Ref<Texture2D> get_run_icon() const override;
+
+	virtual void get_platform_features(List<String> *r_features) const override {
+		r_features->push_back("web");
+		r_features->push_back(get_os_name().to_lower());
+	}
+
+	virtual void resolve_platform_feature_priorities(const Ref<EditorExportPreset> &p_preset, HashSet<String> &p_features) override {
+	}
+
+	String get_debug_protocol() const override { return "ws://"; }
+
+	EditorExportPlatformWeb();
+	~EditorExportPlatformWeb();
+};
+
+#endif // WEB_EXPORT_PLUGIN_H
diff --git a/platform/web/godot_audio.h b/platform/web/godot_audio.h
new file mode 100644
index 0000000000..3855b7301e
--- /dev/null
+++ b/platform/web/godot_audio.h
@@ -0,0 +1,66 @@
+/*************************************************************************/
+/*  godot_audio.h                                                        */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef GODOT_AUDIO_H
+#define GODOT_AUDIO_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "stddef.h"
+
+extern int godot_audio_is_available();
+extern int godot_audio_has_worklet();
+extern int godot_audio_has_script_processor();
+extern int godot_audio_init(int *p_mix_rate, int p_latency, void (*_state_cb)(int), void (*_latency_cb)(float));
+extern void godot_audio_resume();
+
+extern int godot_audio_capture_start();
+extern void godot_audio_capture_stop();
+
+// Worklet
+typedef int32_t GodotAudioState[4];
+extern int godot_audio_worklet_create(int p_channels);
+extern void godot_audio_worklet_start(float *p_in_buf, int p_in_size, float *p_out_buf, int p_out_size, GodotAudioState p_state);
+extern void godot_audio_worklet_start_no_threads(float *p_out_buf, int p_out_size, void (*p_out_cb)(int p_pos, int p_frames), float *p_in_buf, int p_in_size, void (*p_in_cb)(int p_pos, int p_frames));
+extern int godot_audio_worklet_state_add(GodotAudioState p_state, int p_idx, int p_value);
+extern int godot_audio_worklet_state_get(GodotAudioState p_state, int p_idx);
+extern int godot_audio_worklet_state_wait(int32_t *p_state, int p_idx, int32_t p_expected, int p_timeout);
+
+// Script
+extern int godot_audio_script_create(int *p_buffer_size, int p_channels);
+extern void godot_audio_script_start(float *p_in_buf, int p_in_size, float *p_out_buf, int p_out_size, void (*p_cb)());
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // GODOT_AUDIO_H
diff --git a/platform/web/godot_js.h b/platform/web/godot_js.h
new file mode 100644
index 0000000000..a323f2d157
--- /dev/null
+++ b/platform/web/godot_js.h
@@ -0,0 +1,131 @@
+/*************************************************************************/
+/*  godot_js.h                                                           */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef GODOT_JS_H
+#define GODOT_JS_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "stddef.h"
+
+// Config
+extern void godot_js_config_locale_get(char *p_ptr, int p_ptr_max);
+extern void godot_js_config_canvas_id_get(char *p_ptr, int p_ptr_max);
+
+// OS
+extern void godot_js_os_finish_async(void (*p_callback)());
+extern void godot_js_os_request_quit_cb(void (*p_callback)());
+extern int godot_js_os_fs_is_persistent();
+extern void godot_js_os_fs_sync(void (*p_callback)());
+extern int godot_js_os_execute(const char *p_json);
+extern void godot_js_os_shell_open(const char *p_uri);
+extern int godot_js_os_hw_concurrency_get();
+extern int godot_js_pwa_cb(void (*p_callback)());
+extern int godot_js_pwa_update();
+
+// Input
+extern void godot_js_input_mouse_button_cb(int (*p_callback)(int p_pressed, int p_button, double p_x, double p_y, int p_modifiers));
+extern void godot_js_input_mouse_move_cb(void (*p_callback)(double p_x, double p_y, double p_rel_x, double p_rel_y, int p_modifiers));
+extern void godot_js_input_mouse_wheel_cb(int (*p_callback)(double p_delta_x, double p_delta_y));
+extern void godot_js_input_touch_cb(void (*p_callback)(int p_type, int p_count), uint32_t *r_identifiers, double *r_coords);
+extern void godot_js_input_key_cb(void (*p_callback)(int p_type, int p_repeat, int p_modifiers), char r_code[32], char r_key[32]);
+extern void godot_js_input_vibrate_handheld(int p_duration_ms);
+
+// Input gamepad
+extern void godot_js_input_gamepad_cb(void (*p_on_change)(int p_index, int p_connected, const char *p_id, const char *p_guid));
+extern int godot_js_input_gamepad_sample();
+extern int godot_js_input_gamepad_sample_count();
+extern int godot_js_input_gamepad_sample_get(int p_idx, float r_btns[16], int32_t *r_btns_num, float r_axes[10], int32_t *r_axes_num, int32_t *r_standard);
+extern void godot_js_input_paste_cb(void (*p_callback)(const char *p_text));
+extern void godot_js_input_drop_files_cb(void (*p_callback)(char **p_filev, int p_filec));
+
+// TTS
+extern int godot_js_tts_is_speaking();
+extern int godot_js_tts_is_paused();
+extern int godot_js_tts_get_voices(void (*p_callback)(int p_size, const char **p_voices));
+extern void godot_js_tts_speak(const char *p_text, const char *p_voice, int p_volume, float p_pitch, float p_rate, int p_utterance_id, void (*p_callback)(int p_event, int p_id, int p_pos));
+extern void godot_js_tts_pause();
+extern void godot_js_tts_resume();
+extern void godot_js_tts_stop();
+
+// Display
+extern int godot_js_display_screen_dpi_get();
+extern double godot_js_display_pixel_ratio_get();
+extern void godot_js_display_alert(const char *p_text);
+extern int godot_js_display_touchscreen_is_available();
+extern int godot_js_display_is_swap_ok_cancel();
+extern void godot_js_display_setup_canvas(int p_width, int p_height, int p_fullscreen, int p_hidpi);
+
+// Display canvas
+extern void godot_js_display_canvas_focus();
+extern int godot_js_display_canvas_is_focused();
+
+// Display window
+extern void godot_js_display_desired_size_set(int p_width, int p_height);
+extern int godot_js_display_size_update();
+extern void godot_js_display_window_size_get(int32_t *p_x, int32_t *p_y);
+extern void godot_js_display_screen_size_get(int32_t *p_x, int32_t *p_y);
+extern int godot_js_display_fullscreen_request();
+extern int godot_js_display_fullscreen_exit();
+extern void godot_js_display_window_title_set(const char *p_text);
+extern void godot_js_display_window_icon_set(const uint8_t *p_ptr, int p_len);
+extern int godot_js_display_has_webgl(int p_version);
+
+// Display clipboard
+extern int godot_js_display_clipboard_set(const char *p_text);
+extern int godot_js_display_clipboard_get(void (*p_callback)(const char *p_text));
+
+// Display cursor
+extern void godot_js_display_cursor_set_shape(const char *p_cursor);
+extern int godot_js_display_cursor_is_hidden();
+extern void godot_js_display_cursor_set_custom_shape(const char *p_shape, const uint8_t *p_ptr, int p_len, int p_hotspot_x, int p_hotspot_y);
+extern void godot_js_display_cursor_set_visible(int p_visible);
+extern void godot_js_display_cursor_lock_set(int p_lock);
+extern int godot_js_display_cursor_is_locked();
+
+// Display listeners
+extern void godot_js_display_fullscreen_cb(void (*p_callback)(int p_fullscreen));
+extern void godot_js_display_window_blur_cb(void (*p_callback)());
+extern void godot_js_display_notification_cb(void (*p_callback)(int p_notification), int p_enter, int p_exit, int p_in, int p_out);
+
+// Display Virtual Keyboard
+extern int godot_js_display_vk_available();
+extern int godot_js_display_tts_available();
+extern void godot_js_display_vk_cb(void (*p_input)(const char *p_text, int p_cursor));
+extern void godot_js_display_vk_show(const char *p_text, int p_type, int p_start, int p_end);
+extern void godot_js_display_vk_hide();
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif // GODOT_JS_H
diff --git a/platform/web/godot_webgl2.h b/platform/web/godot_webgl2.h
new file mode 100644
index 0000000000..968b70f84b
--- /dev/null
+++ b/platform/web/godot_webgl2.h
@@ -0,0 +1,37 @@
+/*************************************************************************/
+/*  godot_webgl2.h                                                       */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef GODOT_WEBGL2_H
+#define GODOT_WEBGL2_H
+
+#include "GLES3/gl3.h"
+#include "webgl/webgl2.h"
+
+#endif // GODOT_WEBGL2_H
diff --git a/platform/web/http_client_web.cpp b/platform/web/http_client_web.cpp
new file mode 100644
index 0000000000..bfdea95f4a
--- /dev/null
+++ b/platform/web/http_client_web.cpp
@@ -0,0 +1,272 @@
+/*************************************************************************/
+/*  http_client_web.cpp                                                  */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "http_client_web.h"
+
+void HTTPClientWeb::_parse_headers(int p_len, const char **p_headers, void *p_ref) {
+	HTTPClientWeb *client = static_cast<HTTPClientWeb *>(p_ref);
+	for (int i = 0; i < p_len; i++) {
+		client->response_headers.push_back(String::utf8(p_headers[i]));
+	}
+}
+
+Error HTTPClientWeb::connect_to_host(const String &p_host, int p_port, bool p_ssl, bool p_verify_host) {
+	close();
+	if (p_ssl && !p_verify_host) {
+		WARN_PRINT("Disabling HTTPClientWeb's host verification is not supported for the Web platform, host will be verified");
+	}
+
+	port = p_port;
+	use_tls = p_ssl;
+
+	host = p_host;
+
+	String host_lower = host.to_lower();
+	if (host_lower.begins_with("http://")) {
+		host = host.substr(7, host.length() - 7);
+	} else if (host_lower.begins_with("https://")) {
+		use_tls = true;
+		host = host.substr(8, host.length() - 8);
+	}
+
+	ERR_FAIL_COND_V(host.length() < HOST_MIN_LEN, ERR_INVALID_PARAMETER);
+
+	if (port < 0) {
+		if (use_tls) {
+			port = PORT_HTTPS;
+		} else {
+			port = PORT_HTTP;
+		}
+	}
+
+	status = host.is_valid_ip_address() ? STATUS_CONNECTING : STATUS_RESOLVING;
+
+	return OK;
+}
+
+void HTTPClientWeb::set_connection(const Ref<StreamPeer> &p_connection) {
+	ERR_FAIL_MSG("Accessing an HTTPClientWeb's StreamPeer is not supported for the Web platform.");
+}
+
+Ref<StreamPeer> HTTPClientWeb::get_connection() const {
+	ERR_FAIL_V_MSG(Ref<RefCounted>(), "Accessing an HTTPClientWeb's StreamPeer is not supported for the Web platform.");
+}
+
+Error HTTPClientWeb::request(Method p_method, const String &p_url, const Vector<String> &p_headers, const uint8_t *p_body, int p_body_len) {
+	ERR_FAIL_INDEX_V(p_method, METHOD_MAX, ERR_INVALID_PARAMETER);
+	ERR_FAIL_COND_V_MSG(p_method == METHOD_TRACE || p_method == METHOD_CONNECT, ERR_UNAVAILABLE, "HTTP methods TRACE and CONNECT are not supported for the Web platform.");
+	ERR_FAIL_COND_V(status != STATUS_CONNECTED, ERR_INVALID_PARAMETER);
+	ERR_FAIL_COND_V(host.is_empty(), ERR_UNCONFIGURED);
+	ERR_FAIL_COND_V(port < 0, ERR_UNCONFIGURED);
+	ERR_FAIL_COND_V(!p_url.begins_with("/"), ERR_INVALID_PARAMETER);
+
+	Error err = verify_headers(p_headers);
+	if (err) {
+		return err;
+	}
+
+	String url = (use_tls ? "https://" : "http://") + host + ":" + itos(port) + p_url;
+	Vector<CharString> keeper;
+	Vector<const char *> c_strings;
+	for (int i = 0; i < p_headers.size(); i++) {
+		keeper.push_back(p_headers[i].utf8());
+		c_strings.push_back(keeper[i].get_data());
+	}
+	if (js_id) {
+		godot_js_fetch_free(js_id);
+	}
+	js_id = godot_js_fetch_create(_methods[p_method], url.utf8().get_data(), c_strings.ptrw(), c_strings.size(), p_body, p_body_len);
+	status = STATUS_REQUESTING;
+	return OK;
+}
+
+void HTTPClientWeb::close() {
+	host = "";
+	port = -1;
+	use_tls = false;
+	status = STATUS_DISCONNECTED;
+	polled_response_code = 0;
+	response_headers.resize(0);
+	response_buffer.resize(0);
+	if (js_id) {
+		godot_js_fetch_free(js_id);
+		js_id = 0;
+	}
+}
+
+HTTPClientWeb::Status HTTPClientWeb::get_status() const {
+	return status;
+}
+
+bool HTTPClientWeb::has_response() const {
+	return response_headers.size() > 0;
+}
+
+bool HTTPClientWeb::is_response_chunked() const {
+	return godot_js_fetch_is_chunked(js_id);
+}
+
+int HTTPClientWeb::get_response_code() const {
+	return polled_response_code;
+}
+
+Error HTTPClientWeb::get_response_headers(List<String> *r_response) {
+	if (!response_headers.size()) {
+		return ERR_INVALID_PARAMETER;
+	}
+	for (int i = 0; i < response_headers.size(); i++) {
+		r_response->push_back(response_headers[i]);
+	}
+	response_headers.clear();
+	return OK;
+}
+
+int64_t HTTPClientWeb::get_response_body_length() const {
+	return godot_js_fetch_body_length_get(js_id);
+}
+
+PackedByteArray HTTPClientWeb::read_response_body_chunk() {
+	ERR_FAIL_COND_V(status != STATUS_BODY, PackedByteArray());
+
+	if (response_buffer.size() != read_limit) {
+		response_buffer.resize(read_limit);
+	}
+	int read = godot_js_fetch_read_chunk(js_id, response_buffer.ptrw(), read_limit);
+
+	// Check if the stream is over.
+	godot_js_fetch_state_t state = godot_js_fetch_state_get(js_id);
+	if (state == GODOT_JS_FETCH_STATE_DONE) {
+		status = STATUS_DISCONNECTED;
+	} else if (state != GODOT_JS_FETCH_STATE_BODY) {
+		status = STATUS_CONNECTION_ERROR;
+	}
+
+	PackedByteArray chunk;
+	if (!read) {
+		return chunk;
+	}
+	chunk.resize(read);
+	memcpy(chunk.ptrw(), response_buffer.ptr(), read);
+	return chunk;
+}
+
+void HTTPClientWeb::set_blocking_mode(bool p_enable) {
+	ERR_FAIL_COND_MSG(p_enable, "HTTPClientWeb blocking mode is not supported for the Web platform.");
+}
+
+bool HTTPClientWeb::is_blocking_mode_enabled() const {
+	return false;
+}
+
+void HTTPClientWeb::set_read_chunk_size(int p_size) {
+	read_limit = p_size;
+}
+
+int HTTPClientWeb::get_read_chunk_size() const {
+	return read_limit;
+}
+
+Error HTTPClientWeb::poll() {
+	switch (status) {
+		case STATUS_DISCONNECTED:
+			return ERR_UNCONFIGURED;
+
+		case STATUS_RESOLVING:
+			status = STATUS_CONNECTING;
+			return OK;
+
+		case STATUS_CONNECTING:
+			status = STATUS_CONNECTED;
+			return OK;
+
+		case STATUS_CONNECTED:
+			return OK;
+
+		case STATUS_BODY: {
+			godot_js_fetch_state_t state = godot_js_fetch_state_get(js_id);
+			if (state == GODOT_JS_FETCH_STATE_DONE) {
+				status = STATUS_DISCONNECTED;
+			} else if (state != GODOT_JS_FETCH_STATE_BODY) {
+				status = STATUS_CONNECTION_ERROR;
+				return ERR_CONNECTION_ERROR;
+			}
+			return OK;
+		}
+
+		case STATUS_CONNECTION_ERROR:
+			return ERR_CONNECTION_ERROR;
+
+		case STATUS_REQUESTING: {
+#ifdef DEBUG_ENABLED
+			// forcing synchronous requests is not possible on the web
+			if (last_polling_frame == Engine::get_singleton()->get_process_frames()) {
+				WARN_PRINT("HTTPClientWeb polled multiple times in one frame, "
+						   "but request cannot progress more than once per "
+						   "frame on the Web platform.");
+			}
+			last_polling_frame = Engine::get_singleton()->get_process_frames();
+#endif
+
+			polled_response_code = godot_js_fetch_http_status_get(js_id);
+			godot_js_fetch_state_t js_state = godot_js_fetch_state_get(js_id);
+			if (js_state == GODOT_JS_FETCH_STATE_REQUESTING) {
+				return OK;
+			} else if (js_state == GODOT_JS_FETCH_STATE_ERROR) {
+				// Fetch is in error state.
+				status = STATUS_CONNECTION_ERROR;
+				return ERR_CONNECTION_ERROR;
+			}
+			if (godot_js_fetch_read_headers(js_id, &_parse_headers, this)) {
+				// Failed to parse headers.
+				status = STATUS_CONNECTION_ERROR;
+				return ERR_CONNECTION_ERROR;
+			}
+			status = STATUS_BODY;
+			break;
+		}
+
+		default:
+			ERR_FAIL_V(ERR_BUG);
+	}
+	return OK;
+}
+
+HTTPClient *HTTPClientWeb::_create_func() {
+	return memnew(HTTPClientWeb);
+}
+
+HTTPClient *(*HTTPClient::_create)() = HTTPClientWeb::_create_func;
+
+HTTPClientWeb::HTTPClientWeb() {
+}
+
+HTTPClientWeb::~HTTPClientWeb() {
+	close();
+}
diff --git a/platform/web/http_client_web.h b/platform/web/http_client_web.h
new file mode 100644
index 0000000000..ff776d72af
--- /dev/null
+++ b/platform/web/http_client_web.h
@@ -0,0 +1,109 @@
+/*************************************************************************/
+/*  http_client_web.h                                                    */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef HTTP_CLIENT_WEB_H
+#define HTTP_CLIENT_WEB_H
+
+#include "core/io/http_client.h"
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include "stddef.h"
+
+typedef enum {
+	GODOT_JS_FETCH_STATE_REQUESTING = 0,
+	GODOT_JS_FETCH_STATE_BODY = 1,
+	GODOT_JS_FETCH_STATE_DONE = 2,
+	GODOT_JS_FETCH_STATE_ERROR = -1,
+} godot_js_fetch_state_t;
+
+extern int godot_js_fetch_create(const char *p_method, const char *p_url, const char **p_headers, int p_headers_len, const uint8_t *p_body, int p_body_len);
+extern int godot_js_fetch_read_headers(int p_id, void (*parse_callback)(int p_size, const char **p_headers, void *p_ref), void *p_ref);
+extern int godot_js_fetch_read_chunk(int p_id, uint8_t *p_buf, int p_buf_size);
+extern void godot_js_fetch_free(int p_id);
+extern godot_js_fetch_state_t godot_js_fetch_state_get(int p_id);
+extern int godot_js_fetch_body_length_get(int p_id);
+extern int godot_js_fetch_http_status_get(int p_id);
+extern int godot_js_fetch_is_chunked(int p_id);
+
+#ifdef __cplusplus
+}
+#endif
+
+class HTTPClientWeb : public HTTPClient {
+private:
+	int js_id = 0;
+	Status status = STATUS_DISCONNECTED;
+
+	// 64 KiB by default (favors fast download speeds at the cost of memory usage).
+	int read_limit = 65536;
+
+	String host;
+	int port = -1;
+	bool use_tls = false;
+
+	int polled_response_code = 0;
+	Vector<String> response_headers;
+	Vector<uint8_t> response_buffer;
+
+#ifdef DEBUG_ENABLED
+	uint64_t last_polling_frame = 0;
+#endif
+
+	static void _parse_headers(int p_len, const char **p_headers, void *p_ref);
+
+public:
+	static HTTPClient *_create_func();
+
+	Error request(Method p_method, const String &p_url, const Vector<String> &p_headers, const uint8_t *p_body, int p_body_size) override;
+
+	Error connect_to_host(const String &p_host, int p_port = -1, bool p_ssl = false, bool p_verify_host = true) override;
+	void set_connection(const Ref<StreamPeer> &p_connection) override;
+	Ref<StreamPeer> get_connection() const override;
+	void close() override;
+	Status get_status() const override;
+	bool has_response() const override;
+	bool is_response_chunked() const override;
+	int get_response_code() const override;
+	Error get_response_headers(List<String> *r_response) override;
+	int64_t get_response_body_length() const override;
+	PackedByteArray read_response_body_chunk() override;
+	void set_blocking_mode(bool p_enable) override;
+	bool is_blocking_mode_enabled() const override;
+	void set_read_chunk_size(int p_size) override;
+	int get_read_chunk_size() const override;
+	Error poll() override;
+	HTTPClientWeb();
+	~HTTPClientWeb();
+};
+
+#endif // HTTP_CLIENT_WEB_H
diff --git a/platform/web/javascript_singleton.cpp b/platform/web/javascript_singleton.cpp
new file mode 100644
index 0000000000..36ab4db452
--- /dev/null
+++ b/platform/web/javascript_singleton.cpp
@@ -0,0 +1,366 @@
+/*************************************************************************/
+/*  javascript_singleton.cpp                                             */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "api/javascript_singleton.h"
+
+#include "emscripten.h"
+#include "os_web.h"
+
+extern "C" {
+extern void godot_js_os_download_buffer(const uint8_t *p_buf, int p_buf_size, const char *p_name, const char *p_mime);
+}
+
+#ifdef JAVASCRIPT_EVAL_ENABLED
+
+extern "C" {
+typedef union {
+	int64_t i;
+	double r;
+	void *p;
+} godot_js_wrapper_ex;
+
+typedef int (*GodotJSWrapperVariant2JSCallback)(const void **p_args, int p_pos, godot_js_wrapper_ex *r_val, void **p_lock);
+typedef void (*GodotJSWrapperFreeLockCallback)(void **p_lock, int p_type);
+extern int godot_js_wrapper_interface_get(const char *p_name);
+extern int godot_js_wrapper_object_call(int p_id, const char *p_method, void **p_args, int p_argc, GodotJSWrapperVariant2JSCallback p_variant2js_callback, godot_js_wrapper_ex *p_cb_rval, void **p_lock, GodotJSWrapperFreeLockCallback p_lock_callback);
+extern int godot_js_wrapper_object_get(int p_id, godot_js_wrapper_ex *p_val, const char *p_prop);
+extern int godot_js_wrapper_object_getvar(int p_id, int p_type, godot_js_wrapper_ex *p_val);
+extern int godot_js_wrapper_object_setvar(int p_id, int p_key_type, godot_js_wrapper_ex *p_key_ex, int p_val_type, godot_js_wrapper_ex *p_val_ex);
+extern void godot_js_wrapper_object_set(int p_id, const char *p_name, int p_type, godot_js_wrapper_ex *p_val);
+extern void godot_js_wrapper_object_unref(int p_id);
+extern int godot_js_wrapper_create_cb(void *p_ref, void (*p_callback)(void *p_ref, int p_arg_id, int p_argc));
+extern void godot_js_wrapper_object_set_cb_ret(int p_type, godot_js_wrapper_ex *p_val);
+extern int godot_js_wrapper_create_object(const char *p_method, void **p_args, int p_argc, GodotJSWrapperVariant2JSCallback p_variant2js_callback, godot_js_wrapper_ex *p_cb_rval, void **p_lock, GodotJSWrapperFreeLockCallback p_lock_callback);
+};
+
+class JavaScriptObjectImpl : public JavaScriptObject {
+private:
+	friend class JavaScript;
+
+	int _js_id = 0;
+	Callable _callable;
+
+	static int _variant2js(const void **p_args, int p_pos, godot_js_wrapper_ex *r_val, void **p_lock);
+	static void _free_lock(void **p_lock, int p_type);
+	static Variant _js2variant(int p_type, godot_js_wrapper_ex *p_val);
+	static void *_alloc_variants(int p_size);
+	static void _callback(void *p_ref, int p_arg_id, int p_argc);
+
+protected:
+	bool _set(const StringName &p_name, const Variant &p_value) override;
+	bool _get(const StringName &p_name, Variant &r_ret) const override;
+	void _get_property_list(List<PropertyInfo> *p_list) const override;
+
+public:
+	Variant getvar(const Variant &p_key, bool *r_valid = nullptr) const override;
+	void setvar(const Variant &p_key, const Variant &p_value, bool *r_valid = nullptr) override;
+	Variant callp(const StringName &p_method, const Variant **p_args, int p_argc, Callable::CallError &r_error) override;
+	JavaScriptObjectImpl() {}
+	JavaScriptObjectImpl(int p_id) { _js_id = p_id; }
+	~JavaScriptObjectImpl() {
+		if (_js_id) {
+			godot_js_wrapper_object_unref(_js_id);
+		}
+	}
+};
+
+bool JavaScriptObjectImpl::_set(const StringName &p_name, const Variant &p_value) {
+	ERR_FAIL_COND_V_MSG(!_js_id, false, "Invalid JS instance");
+	const String name = p_name;
+	godot_js_wrapper_ex exchange;
+	void *lock = nullptr;
+	const Variant *v = &p_value;
+	int type = _variant2js((const void **)&v, 0, &exchange, &lock);
+	godot_js_wrapper_object_set(_js_id, name.utf8().get_data(), type, &exchange);
+	if (lock) {
+		_free_lock(&lock, type);
+	}
+	return true;
+}
+
+bool JavaScriptObjectImpl::_get(const StringName &p_name, Variant &r_ret) const {
+	ERR_FAIL_COND_V_MSG(!_js_id, false, "Invalid JS instance");
+	const String name = p_name;
+	godot_js_wrapper_ex exchange;
+	int type = godot_js_wrapper_object_get(_js_id, &exchange, name.utf8().get_data());
+	r_ret = _js2variant(type, &exchange);
+	return true;
+}
+
+Variant JavaScriptObjectImpl::getvar(const Variant &p_key, bool *r_valid) const {
+	if (r_valid) {
+		*r_valid = false;
+	}
+	godot_js_wrapper_ex exchange;
+	void *lock = nullptr;
+	const Variant *v = &p_key;
+	int prop_type = _variant2js((const void **)&v, 0, &exchange, &lock);
+	int type = godot_js_wrapper_object_getvar(_js_id, prop_type, &exchange);
+	if (lock) {
+		_free_lock(&lock, prop_type);
+	}
+	if (type < 0) {
+		return Variant();
+	}
+	if (r_valid) {
+		*r_valid = true;
+	}
+	return _js2variant(type, &exchange);
+}
+
+void JavaScriptObjectImpl::setvar(const Variant &p_key, const Variant &p_value, bool *r_valid) {
+	if (r_valid) {
+		*r_valid = false;
+	}
+	godot_js_wrapper_ex kex, vex;
+	void *klock = nullptr;
+	void *vlock = nullptr;
+	const Variant *kv = &p_key;
+	const Variant *vv = &p_value;
+	int ktype = _variant2js((const void **)&kv, 0, &kex, &klock);
+	int vtype = _variant2js((const void **)&vv, 0, &vex, &vlock);
+	int ret = godot_js_wrapper_object_setvar(_js_id, ktype, &kex, vtype, &vex);
+	if (klock) {
+		_free_lock(&klock, ktype);
+	}
+	if (vlock) {
+		_free_lock(&vlock, vtype);
+	}
+	if (ret == 0 && r_valid) {
+		*r_valid = true;
+	}
+}
+
+void JavaScriptObjectImpl::_get_property_list(List<PropertyInfo> *p_list) const {
+}
+
+void JavaScriptObjectImpl::_free_lock(void **p_lock, int p_type) {
+	ERR_FAIL_COND_MSG(*p_lock == nullptr, "No lock to free!");
+	const Variant::Type type = (Variant::Type)p_type;
+	switch (type) {
+		case Variant::STRING: {
+			CharString *cs = (CharString *)(*p_lock);
+			memdelete(cs);
+			*p_lock = nullptr;
+		} break;
+		default:
+			ERR_FAIL_MSG("Unknown lock type to free. Likely a bug.");
+	}
+}
+
+Variant JavaScriptObjectImpl::_js2variant(int p_type, godot_js_wrapper_ex *p_val) {
+	Variant::Type type = (Variant::Type)p_type;
+	switch (type) {
+		case Variant::BOOL:
+			return Variant((bool)p_val->i);
+		case Variant::INT:
+			return p_val->i;
+		case Variant::FLOAT:
+			return p_val->r;
+		case Variant::STRING: {
+			String out = String::utf8((const char *)p_val->p);
+			free(p_val->p);
+			return out;
+		}
+		case Variant::OBJECT: {
+			return memnew(JavaScriptObjectImpl(p_val->i));
+		}
+		default:
+			return Variant();
+	}
+}
+
+int JavaScriptObjectImpl::_variant2js(const void **p_args, int p_pos, godot_js_wrapper_ex *r_val, void **p_lock) {
+	const Variant **args = (const Variant **)p_args;
+	const Variant *v = args[p_pos];
+	Variant::Type type = v->get_type();
+	switch (type) {
+		case Variant::BOOL:
+			r_val->i = v->operator bool() ? 1 : 0;
+			break;
+		case Variant::INT: {
+			const int64_t tmp = v->operator int64_t();
+			if (tmp >= 1LL << 31) {
+				r_val->r = (double)tmp;
+				return Variant::FLOAT;
+			}
+			r_val->i = v->operator int64_t();
+		} break;
+		case Variant::FLOAT:
+			r_val->r = v->operator real_t();
+			break;
+		case Variant::STRING: {
+			CharString *cs = memnew(CharString(v->operator String().utf8()));
+			r_val->p = (void *)cs->get_data();
+			*p_lock = (void *)cs;
+		} break;
+		case Variant::OBJECT: {
+			JavaScriptObject *js_obj = Object::cast_to<JavaScriptObject>(v->operator Object *());
+			r_val->i = js_obj != nullptr ? ((JavaScriptObjectImpl *)js_obj)->_js_id : 0;
+		} break;
+		default:
+			break;
+	}
+	return type;
+}
+
+Variant JavaScriptObjectImpl::callp(const StringName &p_method, const Variant **p_args, int p_argc, Callable::CallError &r_error) {
+	godot_js_wrapper_ex exchange;
+	const String method = p_method;
+	void *lock = nullptr;
+	const int type = godot_js_wrapper_object_call(_js_id, method.utf8().get_data(), (void **)p_args, p_argc, &_variant2js, &exchange, &lock, &_free_lock);
+	r_error.error = Callable::CallError::CALL_OK;
+	if (type < 0) {
+		r_error.error = Callable::CallError::CALL_ERROR_INSTANCE_IS_NULL;
+		return Variant();
+	}
+	return _js2variant(type, &exchange);
+}
+
+void JavaScriptObjectImpl::_callback(void *p_ref, int p_args_id, int p_argc) {
+	const JavaScriptObjectImpl *obj = (JavaScriptObjectImpl *)p_ref;
+	ERR_FAIL_COND_MSG(obj->_callable.is_null(), "JavaScript callback failed.");
+	Vector<const Variant *> argp;
+	Array arg_arr;
+	for (int i = 0; i < p_argc; i++) {
+		godot_js_wrapper_ex exchange;
+		exchange.i = i;
+		int type = godot_js_wrapper_object_getvar(p_args_id, Variant::INT, &exchange);
+		arg_arr.push_back(_js2variant(type, &exchange));
+	}
+	Variant arg = arg_arr;
+	const Variant *argv[1] = { &arg };
+	Callable::CallError err;
+	Variant ret;
+	obj->_callable.callp(argv, 1, ret, err);
+
+	// Set return value
+	godot_js_wrapper_ex exchange;
+	void *lock = nullptr;
+	const Variant *v = &ret;
+	int type = _variant2js((const void **)&v, 0, &exchange, &lock);
+	godot_js_wrapper_object_set_cb_ret(type, &exchange);
+	if (lock) {
+		_free_lock(&lock, type);
+	}
+}
+
+Ref<JavaScriptObject> JavaScript::create_callback(const Callable &p_callable) {
+	Ref<JavaScriptObjectImpl> out = memnew(JavaScriptObjectImpl);
+	out->_callable = p_callable;
+	out->_js_id = godot_js_wrapper_create_cb(out.ptr(), JavaScriptObjectImpl::_callback);
+	return out;
+}
+
+Ref<JavaScriptObject> JavaScript::get_interface(const String &p_interface) {
+	int js_id = godot_js_wrapper_interface_get(p_interface.utf8().get_data());
+	ERR_FAIL_COND_V_MSG(!js_id, Ref<JavaScriptObject>(), "No interface '" + p_interface + "' registered.");
+	return Ref<JavaScriptObject>(memnew(JavaScriptObjectImpl(js_id)));
+}
+
+Variant JavaScript::_create_object_bind(const Variant **p_args, int p_argcount, Callable::CallError &r_error) {
+	if (p_argcount < 1) {
+		r_error.error = Callable::CallError::CALL_ERROR_TOO_FEW_ARGUMENTS;
+		r_error.argument = 0;
+		return Ref<JavaScriptObject>();
+	}
+	if (p_args[0]->get_type() != Variant::STRING) {
+		r_error.error = Callable::CallError::CALL_ERROR_INVALID_ARGUMENT;
+		r_error.argument = 0;
+		r_error.expected = Variant::STRING;
+		return Ref<JavaScriptObject>();
+	}
+	godot_js_wrapper_ex exchange;
+	const String object = *p_args[0];
+	void *lock = nullptr;
+	const Variant **args = p_argcount > 1 ? &p_args[1] : nullptr;
+	const int type = godot_js_wrapper_create_object(object.utf8().get_data(), (void **)args, p_argcount - 1, &JavaScriptObjectImpl::_variant2js, &exchange, &lock, &JavaScriptObjectImpl::_free_lock);
+	r_error.error = Callable::CallError::CALL_OK;
+	if (type < 0) {
+		r_error.error = Callable::CallError::CALL_ERROR_INSTANCE_IS_NULL;
+		return Ref<JavaScriptObject>();
+	}
+	return JavaScriptObjectImpl::_js2variant(type, &exchange);
+}
+
+extern "C" {
+union js_eval_ret {
+	uint32_t b;
+	double d;
+	char *s;
+};
+
+extern int godot_js_eval(const char *p_js, int p_use_global_ctx, union js_eval_ret *p_union_ptr, void *p_byte_arr, void *p_byte_arr_write, void *(*p_callback)(void *p_ptr, void *p_ptr2, int p_len));
+}
+
+void *resize_PackedByteArray_and_open_write(void *p_arr, void *r_write, int p_len) {
+	PackedByteArray *arr = (PackedByteArray *)p_arr;
+	VectorWriteProxy<uint8_t> *write = (VectorWriteProxy<uint8_t> *)r_write;
+	arr->resize(p_len);
+	*write = arr->write;
+	return arr->ptrw();
+}
+
+Variant JavaScript::eval(const String &p_code, bool p_use_global_exec_context) {
+	union js_eval_ret js_data;
+	PackedByteArray arr;
+	VectorWriteProxy<uint8_t> arr_write;
+
+	Variant::Type return_type = static_cast<Variant::Type>(godot_js_eval(p_code.utf8().get_data(), p_use_global_exec_context, &js_data, &arr, &arr_write, resize_PackedByteArray_and_open_write));
+
+	switch (return_type) {
+		case Variant::BOOL:
+			return js_data.b;
+		case Variant::FLOAT:
+			return js_data.d;
+		case Variant::STRING: {
+			String str = String::utf8(js_data.s);
+			free(js_data.s); // Must free the string allocated in JS.
+			return str;
+		}
+		case Variant::PACKED_BYTE_ARRAY:
+			arr_write = VectorWriteProxy<uint8_t>();
+			return arr;
+		default:
+			return Variant();
+	}
+}
+#endif // JAVASCRIPT_EVAL_ENABLED
+
+void JavaScript::download_buffer(Vector<uint8_t> p_arr, const String &p_name, const String &p_mime) {
+	godot_js_os_download_buffer(p_arr.ptr(), p_arr.size(), p_name.utf8().get_data(), p_mime.utf8().get_data());
+}
+
+bool JavaScript::pwa_needs_update() const {
+	return OS_Web::get_singleton()->pwa_needs_update();
+}
+Error JavaScript::pwa_update() {
+	return OS_Web::get_singleton()->pwa_update();
+}
diff --git a/platform/web/js/engine/config.js b/platform/web/js/engine/config.js
new file mode 100644
index 0000000000..9c4b6c2012
--- /dev/null
+++ b/platform/web/js/engine/config.js
@@ -0,0 +1,358 @@
+/**
+ * An object used to configure the Engine instance based on godot export options, and to override those in custom HTML
+ * templates if needed.
+ *
+ * @header Engine configuration
+ * @summary The Engine configuration object. This is just a typedef, create it like a regular object, e.g.:
+ *
+ * ``const MyConfig = { executable: 'godot', unloadAfterInit: false }``
+ *
+ * @typedef {Object} EngineConfig
+ */
+const EngineConfig = {}; // eslint-disable-line no-unused-vars
+
+/**
+ * @struct
+ * @constructor
+ * @ignore
+ */
+const InternalConfig = function (initConfig) { // eslint-disable-line no-unused-vars
+	const cfg = /** @lends {InternalConfig.prototype} */ {
+		/**
+		 * Whether the unload the engine automatically after the instance is initialized.
+		 *
+		 * @memberof EngineConfig
+		 * @default
+		 * @type {boolean}
+		 */
+		unloadAfterInit: true,
+		/**
+		 * The HTML DOM Canvas object to use.
+		 *
+		 * By default, the first canvas element in the document will be used is none is specified.
+		 *
+		 * @memberof EngineConfig
+		 * @default
+		 * @type {?HTMLCanvasElement}
+		 */
+		canvas: null,
+		/**
+		 * The name of the WASM file without the extension. (Set by Godot Editor export process).
+		 *
+		 * @memberof EngineConfig
+		 * @default
+		 * @type {string}
+		 */
+		executable: '',
+		/**
+		 * An alternative name for the game pck to load. The executable name is used otherwise.
+		 *
+		 * @memberof EngineConfig
+		 * @default
+		 * @type {?string}
+		 */
+		mainPack: null,
+		/**
+		 * Specify a language code to select the proper localization for the game.
+		 *
+		 * The browser locale will be used if none is specified. See complete list of
+		 * :ref:`supported locales <doc_locales>`.
+		 *
+		 * @memberof EngineConfig
+		 * @type {?string}
+		 * @default
+		 */
+		locale: null,
+		/**
+		 * The canvas resize policy determines how the canvas should be resized by Godot.
+		 *
+		 * ``0`` means Godot won't do any resizing. This is useful if you want to control the canvas size from
+		 * javascript code in your template.
+		 *
+		 * ``1`` means Godot will resize the canvas on start, and when changing window size via engine functions.
+		 *
+		 * ``2`` means Godot will adapt the canvas size to match the whole browser window.
+		 *
+		 * @memberof EngineConfig
+		 * @type {number}
+		 * @default
+		 */
+		canvasResizePolicy: 2,
+		/**
+		 * The arguments to be passed as command line arguments on startup.
+		 *
+		 * See :ref:`command line tutorial <doc_command_line_tutorial>`.
+		 *
+		 * **Note**: :js:meth:`startGame <Engine.prototype.startGame>` will always add the ``--main-pack`` argument.
+		 *
+		 * @memberof EngineConfig
+		 * @type {Array<string>}
+		 * @default
+		 */
+		args: [],
+		/**
+		 * When enabled, the game canvas will automatically grab the focus when the engine starts.
+		 *
+		 * @memberof EngineConfig
+		 * @type {boolean}
+		 * @default
+		 */
+		focusCanvas: true,
+		/**
+		 * When enabled, this will turn on experimental virtual keyboard support on mobile.
+		 *
+		 * @memberof EngineConfig
+		 * @type {boolean}
+		 * @default
+		 */
+		experimentalVK: false,
+		/**
+		 * The progressive web app service worker to install.
+		 * @memberof EngineConfig
+		 * @default
+		 * @type {string}
+		 */
+		serviceWorker: '',
+		/**
+		 * @ignore
+		 * @type {Array.<string>}
+		 */
+		persistentPaths: ['/userfs'],
+		/**
+		 * @ignore
+		 * @type {boolean}
+		 */
+		persistentDrops: false,
+		/**
+		 * @ignore
+		 * @type {Array.<string>}
+		 */
+		gdnativeLibs: [],
+		/**
+		 * @ignore
+		 * @type {Array.<string>}
+		 */
+		fileSizes: [],
+		/**
+		 * A callback function for handling Godot's ``OS.execute`` calls.
+		 *
+		 * This is for example used in the Web Editor template to switch between project manager and editor, and for running the game.
+		 *
+		 * @callback EngineConfig.onExecute
+		 * @param {string} path The path that Godot's wants executed.
+		 * @param {Array.<string>} args The arguments of the "command" to execute.
+		 */
+		/**
+		 * @ignore
+		 * @type {?function(string, Array.<string>)}
+		 */
+		onExecute: null,
+		/**
+		 * A callback function for being notified when the Godot instance quits.
+		 *
+		 * **Note**: This function will not be called if the engine crashes or become unresponsive.
+		 *
+		 * @callback EngineConfig.onExit
+		 * @param {number} status_code The status code returned by Godot on exit.
+		 */
+		/**
+		 * @ignore
+		 * @type {?function(number)}
+		 */
+		onExit: null,
+		/**
+		 * A callback function for displaying download progress.
+		 *
+		 * The function is called once per frame while downloading files, so the usage of ``requestAnimationFrame()``
+		 * is not necessary.
+		 *
+		 * If the callback function receives a total amount of bytes as 0, this means that it is impossible to calculate.
+		 * Possible reasons include:
+		 *
+		 * -  Files are delivered with server-side chunked compression
+		 * -  Files are delivered with server-side compression on Chromium
+		 * -  Not all file downloads have started yet (usually on servers without multi-threading)
+		 *
+		 * @callback EngineConfig.onProgress
+		 * @param {number} current The current amount of downloaded bytes so far.
+		 * @param {number} total The total amount of bytes to be downloaded.
+		 */
+		/**
+		 * @ignore
+		 * @type {?function(number, number)}
+		 */
+		onProgress: null,
+		/**
+		 * A callback function for handling the standard output stream. This method should usually only be used in debug pages.
+		 *
+		 * By default, ``console.log()`` is used.
+		 *
+		 * @callback EngineConfig.onPrint
+		 * @param {...*} [var_args] A variadic number of arguments to be printed.
+		 */
+		/**
+		 * @ignore
+		 * @type {?function(...*)}
+		 */
+		onPrint: function () {
+			console.log.apply(console, Array.from(arguments)); // eslint-disable-line no-console
+		},
+		/**
+		 * A callback function for handling the standard error stream. This method should usually only be used in debug pages.
+		 *
+		 * By default, ``console.error()`` is used.
+		 *
+		 * @callback EngineConfig.onPrintError
+		 * @param {...*} [var_args] A variadic number of arguments to be printed as errors.
+		*/
+		/**
+		 * @ignore
+		 * @type {?function(...*)}
+		 */
+		onPrintError: function (var_args) {
+			console.error.apply(console, Array.from(arguments)); // eslint-disable-line no-console
+		},
+	};
+
+	/**
+	 * @ignore
+	 * @struct
+	 * @constructor
+	 * @param {EngineConfig} opts
+	 */
+	function Config(opts) {
+		this.update(opts);
+	}
+
+	Config.prototype = cfg;
+
+	/**
+	 * @ignore
+	 * @param {EngineConfig} opts
+	 */
+	Config.prototype.update = function (opts) {
+		const config = opts || {};
+		// NOTE: We must explicitly pass the default, accessing it via
+		// the key will fail due to closure compiler renames.
+		function parse(key, def) {
+			if (typeof (config[key]) === 'undefined') {
+				return def;
+			}
+			return config[key];
+		}
+		// Module config
+		this.unloadAfterInit = parse('unloadAfterInit', this.unloadAfterInit);
+		this.onPrintError = parse('onPrintError', this.onPrintError);
+		this.onPrint = parse('onPrint', this.onPrint);
+		this.onProgress = parse('onProgress', this.onProgress);
+
+		// Godot config
+		this.canvas = parse('canvas', this.canvas);
+		this.executable = parse('executable', this.executable);
+		this.mainPack = parse('mainPack', this.mainPack);
+		this.locale = parse('locale', this.locale);
+		this.canvasResizePolicy = parse('canvasResizePolicy', this.canvasResizePolicy);
+		this.persistentPaths = parse('persistentPaths', this.persistentPaths);
+		this.persistentDrops = parse('persistentDrops', this.persistentDrops);
+		this.experimentalVK = parse('experimentalVK', this.experimentalVK);
+		this.focusCanvas = parse('focusCanvas', this.focusCanvas);
+		this.serviceWorker = parse('serviceWorker', this.serviceWorker);
+		this.gdnativeLibs = parse('gdnativeLibs', this.gdnativeLibs);
+		this.fileSizes = parse('fileSizes', this.fileSizes);
+		this.args = parse('args', this.args);
+		this.onExecute = parse('onExecute', this.onExecute);
+		this.onExit = parse('onExit', this.onExit);
+	};
+
+	/**
+	 * @ignore
+	 * @param {string} loadPath
+	 * @param {Response} response
+	 */
+	Config.prototype.getModuleConfig = function (loadPath, response) {
+		let r = response;
+		return {
+			'print': this.onPrint,
+			'printErr': this.onPrintError,
+			'thisProgram': this.executable,
+			'noExitRuntime': true,
+			'dynamicLibraries': [`${loadPath}.side.wasm`],
+			'instantiateWasm': function (imports, onSuccess) {
+				function done(result) {
+					onSuccess(result['instance'], result['module']);
+				}
+				if (typeof (WebAssembly.instantiateStreaming) !== 'undefined') {
+					WebAssembly.instantiateStreaming(Promise.resolve(r), imports).then(done);
+				} else {
+					r.arrayBuffer().then(function (buffer) {
+						WebAssembly.instantiate(buffer, imports).then(done);
+					});
+				}
+				r = null;
+				return {};
+			},
+			'locateFile': function (path) {
+				if (path.endsWith('.worker.js')) {
+					return `${loadPath}.worker.js`;
+				} else if (path.endsWith('.audio.worklet.js')) {
+					return `${loadPath}.audio.worklet.js`;
+				} else if (path.endsWith('.js')) {
+					return `${loadPath}.js`;
+				} else if (path.endsWith('.side.wasm')) {
+					return `${loadPath}.side.wasm`;
+				} else if (path.endsWith('.wasm')) {
+					return `${loadPath}.wasm`;
+				}
+				return path;
+			},
+		};
+	};
+
+	/**
+	 * @ignore
+	 * @param {function()} cleanup
+	 */
+	Config.prototype.getGodotConfig = function (cleanup) {
+		// Try to find a canvas
+		if (!(this.canvas instanceof HTMLCanvasElement)) {
+			const nodes = document.getElementsByTagName('canvas');
+			if (nodes.length && nodes[0] instanceof HTMLCanvasElement) {
+				this.canvas = nodes[0];
+			}
+			if (!this.canvas) {
+				throw new Error('No canvas found in page');
+			}
+		}
+		// Canvas can grab focus on click, or key events won't work.
+		if (this.canvas.tabIndex < 0) {
+			this.canvas.tabIndex = 0;
+		}
+
+		// Browser locale, or custom one if defined.
+		let locale = this.locale;
+		if (!locale) {
+			locale = navigator.languages ? navigator.languages[0] : navigator.language;
+			locale = locale.split('.')[0];
+		}
+		locale = locale.replace('-', '_');
+		const onExit = this.onExit;
+
+		// Godot configuration.
+		return {
+			'canvas': this.canvas,
+			'canvasResizePolicy': this.canvasResizePolicy,
+			'locale': locale,
+			'persistentDrops': this.persistentDrops,
+			'virtualKeyboard': this.experimentalVK,
+			'focusCanvas': this.focusCanvas,
+			'onExecute': this.onExecute,
+			'onExit': function (p_code) {
+				cleanup(); // We always need to call the cleanup callback to free memory.
+				if (typeof (onExit) === 'function') {
+					onExit(p_code);
+				}
+			},
+		};
+	};
+	return new Config(initConfig);
+};
diff --git a/platform/web/js/engine/engine.externs.js b/platform/web/js/engine/engine.externs.js
new file mode 100644
index 0000000000..35a66a93ae
--- /dev/null
+++ b/platform/web/js/engine/engine.externs.js
@@ -0,0 +1,4 @@
+var Godot;
+var WebAssembly = {};
+WebAssembly.instantiate = function(buffer, imports) {};
+WebAssembly.instantiateStreaming = function(response, imports) {};
diff --git a/platform/web/js/engine/engine.js b/platform/web/js/engine/engine.js
new file mode 100644
index 0000000000..6f0d51b2be
--- /dev/null
+++ b/platform/web/js/engine/engine.js
@@ -0,0 +1,281 @@
+/**
+ * Projects exported for the Web expose the :js:class:`Engine` class to the JavaScript environment, that allows
+ * fine control over the engine's start-up process.
+ *
+ * This API is built in an asynchronous manner and requires basic understanding
+ * of `Promises <https://developer.mozilla.org/en-US/docs/Web/JavaScript/Guide/Using_promises>`__.
+ *
+ * @module Engine
+ * @header Web export JavaScript reference
+ */
+const Engine = (function () {
+	const preloader = new Preloader();
+
+	let loadPromise = null;
+	let loadPath = '';
+	let initPromise = null;
+
+	/**
+	 * @classdesc The ``Engine`` class provides methods for loading and starting exported projects on the Web. For default export
+	 * settings, this is already part of the exported HTML page. To understand practical use of the ``Engine`` class,
+	 * see :ref:`Custom HTML page for Web export <doc_customizing_html5_shell>`.
+	 *
+	 * @description Create a new Engine instance with the given configuration.
+	 *
+	 * @global
+	 * @constructor
+	 * @param {EngineConfig} initConfig The initial config for this instance.
+	 */
+	function Engine(initConfig) { // eslint-disable-line no-shadow
+		this.config = new InternalConfig(initConfig);
+		this.rtenv = null;
+	}
+
+	/**
+	 * Load the engine from the specified base path.
+	 *
+	 * @param {string} basePath Base path of the engine to load.
+	 * @param {number=} [size=0] The file size if known.
+	 * @returns {Promise} A Promise that resolves once the engine is loaded.
+	 *
+	 * @function Engine.load
+	 */
+	Engine.load = function (basePath, size) {
+		if (loadPromise == null) {
+			loadPath = basePath;
+			loadPromise = preloader.loadPromise(`${loadPath}.wasm`, size, true);
+			requestAnimationFrame(preloader.animateProgress);
+		}
+		return loadPromise;
+	};
+
+	/**
+	 * Unload the engine to free memory.
+	 *
+	 * This method will be called automatically depending on the configuration. See :js:attr:`unloadAfterInit`.
+	 *
+	 * @function Engine.unload
+	 */
+	Engine.unload = function () {
+		loadPromise = null;
+	};
+
+	/**
+	 * Check whether WebGL is available. Optionally, specify a particular version of WebGL to check for.
+	 *
+	 * @param {number=} [majorVersion=1] The major WebGL version to check for.
+	 * @returns {boolean} If the given major version of WebGL is available.
+	 * @function Engine.isWebGLAvailable
+	 */
+	Engine.isWebGLAvailable = function (majorVersion = 1) {
+		try {
+			return !!document.createElement('canvas').getContext(['webgl', 'webgl2'][majorVersion - 1]);
+		} catch (e) { /* Not available */ }
+		return false;
+	};
+
+	/**
+	 * Safe Engine constructor, creates a new prototype for every new instance to avoid prototype pollution.
+	 * @ignore
+	 * @constructor
+	 */
+	function SafeEngine(initConfig) {
+		const proto = /** @lends Engine.prototype */ {
+			/**
+			 * Initialize the engine instance. Optionally, pass the base path to the engine to load it,
+			 * if it hasn't been loaded yet. See :js:meth:`Engine.load`.
+			 *
+			 * @param {string=} basePath Base path of the engine to load.
+			 * @return {Promise} A ``Promise`` that resolves once the engine is loaded and initialized.
+			 */
+			init: function (basePath) {
+				if (initPromise) {
+					return initPromise;
+				}
+				if (loadPromise == null) {
+					if (!basePath) {
+						initPromise = Promise.reject(new Error('A base path must be provided when calling `init` and the engine is not loaded.'));
+						return initPromise;
+					}
+					Engine.load(basePath, this.config.fileSizes[`${basePath}.wasm`]);
+				}
+				const me = this;
+				function doInit(promise) {
+					// Care! Promise chaining is bogus with old emscripten versions.
+					// This caused a regression with the Mono build (which uses an older emscripten version).
+					// Make sure to test that when refactoring.
+					return new Promise(function (resolve, reject) {
+						promise.then(function (response) {
+							const cloned = new Response(response.clone().body, { 'headers': [['content-type', 'application/wasm']] });
+							Godot(me.config.getModuleConfig(loadPath, cloned)).then(function (module) {
+								const paths = me.config.persistentPaths;
+								module['initFS'](paths).then(function (err) {
+									me.rtenv = module;
+									if (me.config.unloadAfterInit) {
+										Engine.unload();
+									}
+									resolve();
+								});
+							});
+						});
+					});
+				}
+				preloader.setProgressFunc(this.config.onProgress);
+				initPromise = doInit(loadPromise);
+				return initPromise;
+			},
+
+			/**
+			 * Load a file so it is available in the instance's file system once it runs. Must be called **before** starting the
+			 * instance.
+			 *
+			 * If not provided, the ``path`` is derived from the URL of the loaded file.
+			 *
+			 * @param {string|ArrayBuffer} file The file to preload.
+			 *
+			 * If a ``string`` the file will be loaded from that path.
+			 *
+			 * If an ``ArrayBuffer`` or a view on one, the buffer will used as the content of the file.
+			 *
+			 * @param {string=} path Path by which the file will be accessible. Required, if ``file`` is not a string.
+			 *
+			 * @returns {Promise} A Promise that resolves once the file is loaded.
+			 */
+			preloadFile: function (file, path) {
+				return preloader.preload(file, path, this.config.fileSizes[file]);
+			},
+
+			/**
+			 * Start the engine instance using the given override configuration (if any).
+			 * :js:meth:`startGame <Engine.prototype.startGame>` can be used in typical cases instead.
+			 *
+			 * This will initialize the instance if it is not initialized. For manual initialization, see :js:meth:`init <Engine.prototype.init>`.
+			 * The engine must be loaded beforehand.
+			 *
+			 * Fails if a canvas cannot be found on the page, or not specified in the configuration.
+			 *
+			 * @param {EngineConfig} override An optional configuration override.
+			 * @return {Promise} Promise that resolves once the engine started.
+			 */
+			start: function (override) {
+				this.config.update(override);
+				const me = this;
+				return me.init().then(function () {
+					if (!me.rtenv) {
+						return Promise.reject(new Error('The engine must be initialized before it can be started'));
+					}
+
+					let config = {};
+					try {
+						config = me.config.getGodotConfig(function () {
+							me.rtenv = null;
+						});
+					} catch (e) {
+						return Promise.reject(e);
+					}
+					// Godot configuration.
+					me.rtenv['initConfig'](config);
+
+					// Preload GDNative libraries.
+					const libs = [];
+					me.config.gdnativeLibs.forEach(function (lib) {
+						libs.push(me.rtenv['loadDynamicLibrary'](lib, { 'loadAsync': true }));
+					});
+					return Promise.all(libs).then(function () {
+						return new Promise(function (resolve, reject) {
+							preloader.preloadedFiles.forEach(function (file) {
+								me.rtenv['copyToFS'](file.path, file.buffer);
+							});
+							preloader.preloadedFiles.length = 0; // Clear memory
+							me.rtenv['callMain'](me.config.args);
+							initPromise = null;
+							if (me.config.serviceWorker && 'serviceWorker' in navigator) {
+								navigator.serviceWorker.register(me.config.serviceWorker);
+							}
+							resolve();
+						});
+					});
+				});
+			},
+
+			/**
+			 * Start the game instance using the given configuration override (if any).
+			 *
+			 * This will initialize the instance if it is not initialized. For manual initialization, see :js:meth:`init <Engine.prototype.init>`.
+			 *
+			 * This will load the engine if it is not loaded, and preload the main pck.
+			 *
+			 * This method expects the initial config (or the override) to have both the :js:attr:`executable` and :js:attr:`mainPack`
+			 * properties set (normally done by the editor during export).
+			 *
+			 * @param {EngineConfig} override An optional configuration override.
+			 * @return {Promise} Promise that resolves once the game started.
+			 */
+			startGame: function (override) {
+				this.config.update(override);
+				// Add main-pack argument.
+				const exe = this.config.executable;
+				const pack = this.config.mainPack || `${exe}.pck`;
+				this.config.args = ['--main-pack', pack].concat(this.config.args);
+				// Start and init with execName as loadPath if not inited.
+				const me = this;
+				return Promise.all([
+					this.init(exe),
+					this.preloadFile(pack, pack),
+				]).then(function () {
+					return me.start.apply(me);
+				});
+			},
+
+			/**
+			 * Create a file at the specified ``path`` with the passed as ``buffer`` in the instance's file system.
+			 *
+			 * @param {string} path The location where the file will be created.
+			 * @param {ArrayBuffer} buffer The content of the file.
+			 */
+			copyToFS: function (path, buffer) {
+				if (this.rtenv == null) {
+					throw new Error('Engine must be inited before copying files');
+				}
+				this.rtenv['copyToFS'](path, buffer);
+			},
+
+			/**
+			 * Request that the current instance quit.
+			 *
+			 * This is akin the user pressing the close button in the window manager, and will
+			 * have no effect if the engine has crashed, or is stuck in a loop.
+			 *
+			 */
+			requestQuit: function () {
+				if (this.rtenv) {
+					this.rtenv['request_quit']();
+				}
+			},
+		};
+
+		Engine.prototype = proto;
+		// Closure compiler exported instance methods.
+		Engine.prototype['init'] = Engine.prototype.init;
+		Engine.prototype['preloadFile'] = Engine.prototype.preloadFile;
+		Engine.prototype['start'] = Engine.prototype.start;
+		Engine.prototype['startGame'] = Engine.prototype.startGame;
+		Engine.prototype['copyToFS'] = Engine.prototype.copyToFS;
+		Engine.prototype['requestQuit'] = Engine.prototype.requestQuit;
+		// Also expose static methods as instance methods
+		Engine.prototype['load'] = Engine.load;
+		Engine.prototype['unload'] = Engine.unload;
+		Engine.prototype['isWebGLAvailable'] = Engine.isWebGLAvailable;
+		return new Engine(initConfig);
+	}
+
+	// Closure compiler exported static methods.
+	SafeEngine['load'] = Engine.load;
+	SafeEngine['unload'] = Engine.unload;
+	SafeEngine['isWebGLAvailable'] = Engine.isWebGLAvailable;
+
+	return SafeEngine;
+}());
+if (typeof window !== 'undefined') {
+	window['Engine'] = Engine;
+}
diff --git a/platform/web/js/engine/preloader.js b/platform/web/js/engine/preloader.js
new file mode 100644
index 0000000000..564c68d264
--- /dev/null
+++ b/platform/web/js/engine/preloader.js
@@ -0,0 +1,133 @@
+const Preloader = /** @constructor */ function () { // eslint-disable-line no-unused-vars
+	function getTrackedResponse(response, load_status) {
+		function onloadprogress(reader, controller) {
+			return reader.read().then(function (result) {
+				if (load_status.done) {
+					return Promise.resolve();
+				}
+				if (result.value) {
+					controller.enqueue(result.value);
+					load_status.loaded += result.value.length;
+				}
+				if (!result.done) {
+					return onloadprogress(reader, controller);
+				}
+				load_status.done = true;
+				return Promise.resolve();
+			});
+		}
+		const reader = response.body.getReader();
+		return new Response(new ReadableStream({
+			start: function (controller) {
+				onloadprogress(reader, controller).then(function () {
+					controller.close();
+				});
+			},
+		}), { headers: response.headers });
+	}
+
+	function loadFetch(file, tracker, fileSize, raw) {
+		tracker[file] = {
+			total: fileSize || 0,
+			loaded: 0,
+			done: false,
+		};
+		return fetch(file).then(function (response) {
+			if (!response.ok) {
+				return Promise.reject(new Error(`Failed loading file '${file}'`));
+			}
+			const tr = getTrackedResponse(response, tracker[file]);
+			if (raw) {
+				return Promise.resolve(tr);
+			}
+			return tr.arrayBuffer();
+		});
+	}
+
+	function retry(func, attempts = 1) {
+		function onerror(err) {
+			if (attempts <= 1) {
+				return Promise.reject(err);
+			}
+			return new Promise(function (resolve, reject) {
+				setTimeout(function () {
+					retry(func, attempts - 1).then(resolve).catch(reject);
+				}, 1000);
+			});
+		}
+		return func().catch(onerror);
+	}
+
+	const DOWNLOAD_ATTEMPTS_MAX = 4;
+	const loadingFiles = {};
+	const lastProgress = { loaded: 0, total: 0 };
+	let progressFunc = null;
+
+	const animateProgress = function () {
+		let loaded = 0;
+		let total = 0;
+		let totalIsValid = true;
+		let progressIsFinal = true;
+
+		Object.keys(loadingFiles).forEach(function (file) {
+			const stat = loadingFiles[file];
+			if (!stat.done) {
+				progressIsFinal = false;
+			}
+			if (!totalIsValid || stat.total === 0) {
+				totalIsValid = false;
+				total = 0;
+			} else {
+				total += stat.total;
+			}
+			loaded += stat.loaded;
+		});
+		if (loaded !== lastProgress.loaded || total !== lastProgress.total) {
+			lastProgress.loaded = loaded;
+			lastProgress.total = total;
+			if (typeof progressFunc === 'function') {
+				progressFunc(loaded, total);
+			}
+		}
+		if (!progressIsFinal) {
+			requestAnimationFrame(animateProgress);
+		}
+	};
+
+	this.animateProgress = animateProgress;
+
+	this.setProgressFunc = function (callback) {
+		progressFunc = callback;
+	};
+
+	this.loadPromise = function (file, fileSize, raw = false) {
+		return retry(loadFetch.bind(null, file, loadingFiles, fileSize, raw), DOWNLOAD_ATTEMPTS_MAX);
+	};
+
+	this.preloadedFiles = [];
+	this.preload = function (pathOrBuffer, destPath, fileSize) {
+		let buffer = null;
+		if (typeof pathOrBuffer === 'string') {
+			const me = this;
+			return this.loadPromise(pathOrBuffer, fileSize).then(function (buf) {
+				me.preloadedFiles.push({
+					path: destPath || pathOrBuffer,
+					buffer: buf,
+				});
+				return Promise.resolve();
+			});
+		} else if (pathOrBuffer instanceof ArrayBuffer) {
+			buffer = new Uint8Array(pathOrBuffer);
+		} else if (ArrayBuffer.isView(pathOrBuffer)) {
+			buffer = new Uint8Array(pathOrBuffer.buffer);
+		}
+		if (buffer) {
+			this.preloadedFiles.push({
+				path: destPath,
+				buffer: pathOrBuffer,
+			});
+			return Promise.resolve();
+		}
+		return Promise.reject(new Error('Invalid object for preloading'));
+	};
+};
diff --git a/platform/web/js/jsdoc2rst/publish.js b/platform/web/js/jsdoc2rst/publish.js
new file mode 100644
index 0000000000..ad9c0fbaaa
--- /dev/null
+++ b/platform/web/js/jsdoc2rst/publish.js
@@ -0,0 +1,354 @@
+/* eslint-disable strict */
+
+'use strict';
+
+const fs = require('fs');
+
+class JSDoclet {
+	constructor(doc) {
+		this.doc = doc;
+		this.description = doc['description'] || '';
+		this.name = doc['name'] || 'unknown';
+		this.longname = doc['longname'] || '';
+		this.types = [];
+		if (doc['type'] && doc['type']['names']) {
+			this.types = doc['type']['names'].slice();
+		}
+		this.type = this.types.length > 0 ? this.types.join('\\|') : '*';
+		this.variable = doc['variable'] || false;
+		this.kind = doc['kind'] || '';
+		this.memberof = doc['memberof'] || null;
+		this.scope = doc['scope'] || '';
+		this.members = [];
+		this.optional = doc['optional'] || false;
+		this.defaultvalue = doc['defaultvalue'];
+		this.summary = doc['summary'] || null;
+		this.classdesc = doc['classdesc'] || null;
+
+		// Parameters (functions)
+		this.params = [];
+		this.returns = doc['returns'] ? doc['returns'][0]['type']['names'][0] : 'void';
+		this.returns_desc = doc['returns'] ? doc['returns'][0]['description'] : null;
+
+		this.params = (doc['params'] || []).slice().map((p) => new JSDoclet(p));
+
+		// Custom tags
+		this.tags = doc['tags'] || [];
+		this.header = this.tags.filter((t) => t['title'] === 'header').map((t) => t['text']).pop() || null;
+	}
+
+	add_member(obj) {
+		this.members.push(obj);
+	}
+
+	is_static() {
+		return this.scope === 'static';
+	}
+
+	is_instance() {
+		return this.scope === 'instance';
+	}
+
+	is_object() {
+		return this.kind === 'Object' || (this.kind === 'typedef' && this.type === 'Object');
+	}
+
+	is_class() {
+		return this.kind === 'class';
+	}
+
+	is_function() {
+		return this.kind === 'function' || (this.kind === 'typedef' && this.type === 'function');
+	}
+
+	is_module() {
+		return this.kind === 'module';
+	}
+}
+
+function format_table(f, data, depth = 0) {
+	if (!data.length) {
+		return;
+	}
+
+	const column_sizes = new Array(data[0].length).fill(0);
+
+	data.forEach((row) => {
+		row.forEach((e, idx) => {
+			column_sizes[idx] = Math.max(e.length, column_sizes[idx]);
+		});
+	});
+
+	const indent = ' '.repeat(depth);
+	let sep = indent;
+	column_sizes.forEach((size) => {
+		sep += '+';
+		sep += '-'.repeat(size + 2);
+	});
+	sep += '+\n';
+	f.write(sep);
+
+	data.forEach((row) => {
+		let row_text = `${indent}|`;
+		row.forEach((entry, idx) => {
+			row_text += ` ${entry.padEnd(column_sizes[idx])} |`;
+		});
+		row_text += '\n';
+		f.write(row_text);
+		f.write(sep);
+	});
+
+	f.write('\n');
+}
+
+function make_header(header, sep) {
+	return `${header}\n${sep.repeat(header.length)}\n\n`;
+}
+
+function indent_multiline(text, depth) {
+	const indent = ' '.repeat(depth);
+	return text.split('\n').map((l) => (l === '' ? l : indent + l)).join('\n');
+}
+
+function make_rst_signature(obj, types = false, style = false) {
+	let out = '';
+	const fmt = style ? '*' : '';
+	obj.params.forEach((arg, idx) => {
+		if (idx > 0) {
+			if (arg.optional) {
+				out += ` ${fmt}[`;
+			}
+			out += ', ';
+		} else {
+			out += ' ';
+			if (arg.optional) {
+				out += `${fmt}[ `;
+			}
+		}
+		if (types) {
+			out += `${arg.type} `;
+		}
+		const variable = arg.variable ? '...' : '';
+		const defval = arg.defaultvalue !== undefined ? `=${arg.defaultvalue}` : '';
+		out += `${variable}${arg.name}${defval}`;
+		if (arg.optional) {
+			out += ` ]${fmt}`;
+		}
+	});
+	out += ' ';
+	return out;
+}
+
+function make_rst_param(f, obj, depth = 0) {
+	const indent = ' '.repeat(depth * 3);
+	f.write(indent);
+	f.write(`:param ${obj.type} ${obj.name}:\n`);
+	f.write(indent_multiline(obj.description, (depth + 1) * 3));
+	f.write('\n\n');
+}
+
+function make_rst_attribute(f, obj, depth = 0, brief = false) {
+	const indent = ' '.repeat(depth * 3);
+	f.write(indent);
+	f.write(`.. js:attribute:: ${obj.name}\n\n`);
+
+	if (brief) {
+		if (obj.summary) {
+			f.write(indent_multiline(obj.summary, (depth + 1) * 3));
+		}
+		f.write('\n\n');
+		return;
+	}
+
+	f.write(indent_multiline(obj.description, (depth + 1) * 3));
+	f.write('\n\n');
+
+	f.write(indent);
+	f.write(`   :type: ${obj.type}\n\n`);
+
+	if (obj.defaultvalue !== undefined) {
+		let defval = obj.defaultvalue;
+		if (defval === '') {
+			defval = '""';
+		}
+		f.write(indent);
+		f.write(`   :value: \`\`${defval}\`\`\n\n`);
+	}
+}
+
+function make_rst_function(f, obj, depth = 0) {
+	let prefix = '';
+	if (obj.is_instance()) {
+		prefix = 'prototype.';
+	}
+
+	const indent = ' '.repeat(depth * 3);
+	const sig = make_rst_signature(obj);
+	f.write(indent);
+	f.write(`.. js:function:: ${prefix}${obj.name}(${sig})\n`);
+	f.write('\n');
+
+	f.write(indent_multiline(obj.description, (depth + 1) * 3));
+	f.write('\n\n');
+
+	obj.params.forEach((param) => {
+		make_rst_param(f, param, depth + 1);
+	});
+
+	if (obj.returns !== 'void') {
+		f.write(indent);
+		f.write('   :return:\n');
+		f.write(indent_multiline(obj.returns_desc, (depth + 2) * 3));
+		f.write('\n\n');
+		f.write(indent);
+		f.write(`   :rtype: ${obj.returns}\n\n`);
+	}
+}
+
+function make_rst_object(f, obj) {
+	let brief = false;
+	// Our custom header flag.
+	if (obj.header !== null) {
+		f.write(make_header(obj.header, '-'));
+		f.write(`${obj.description}\n\n`);
+		brief = true;
+	}
+
+	// Format members table and descriptions
+	const data = [['type', 'name']].concat(obj.members.map((m) => [m.type, `:js:attr:\`${m.name}\``]));
+
+	f.write(make_header('Properties', '^'));
+	format_table(f, data, 0);
+
+	make_rst_attribute(f, obj, 0, brief);
+
+	if (!obj.members.length) {
+		return;
+	}
+
+	f.write('   **Property Descriptions**\n\n');
+
+	// Properties first
+	obj.members.filter((m) => !m.is_function()).forEach((m) => {
+		make_rst_attribute(f, m, 1);
+	});
+
+	// Callbacks last
+	obj.members.filter((m) => m.is_function()).forEach((m) => {
+		make_rst_function(f, m, 1);
+	});
+}
+
+function make_rst_class(f, obj) {
+	const header = obj.header ? obj.header : obj.name;
+	f.write(make_header(header, '-'));
+
+	if (obj.classdesc) {
+		f.write(`${obj.classdesc}\n\n`);
+	}
+
+	const funcs = obj.members.filter((m) => m.is_function());
+	function make_data(m) {
+		const base = m.is_static() ? obj.name : `${obj.name}.prototype`;
+		const params = make_rst_signature(m, true, true);
+		const sig = `:js:attr:\`${m.name} <${base}.${m.name}>\` **(**${params}**)**`;
+		return [m.returns, sig];
+	}
+	const sfuncs = funcs.filter((m) => m.is_static());
+	const ifuncs = funcs.filter((m) => !m.is_static());
+
+	f.write(make_header('Static Methods', '^'));
+	format_table(f, sfuncs.map((m) => make_data(m)));
+
+	f.write(make_header('Instance Methods', '^'));
+	format_table(f, ifuncs.map((m) => make_data(m)));
+
+	const sig = make_rst_signature(obj);
+	f.write(`.. js:class:: ${obj.name}(${sig})\n\n`);
+	f.write(indent_multiline(obj.description, 3));
+	f.write('\n\n');
+
+	obj.params.forEach((p) => {
+		make_rst_param(f, p, 1);
+	});
+
+	f.write('   **Static Methods**\n\n');
+	sfuncs.forEach((m) => {
+		make_rst_function(f, m, 1);
+	});
+
+	f.write('   **Instance Methods**\n\n');
+	ifuncs.forEach((m) => {
+		make_rst_function(f, m, 1);
+	});
+}
+
+function make_rst_module(f, obj) {
+	const header = obj.header !== null ? obj.header : obj.name;
+	f.write(make_header(header, '='));
+	f.write(obj.description);
+	f.write('\n\n');
+}
+
+function write_base_object(f, obj) {
+	if (obj.is_object()) {
+		make_rst_object(f, obj);
+	} else if (obj.is_function()) {
+		make_rst_function(f, obj);
+	} else if (obj.is_class()) {
+		make_rst_class(f, obj);
+	} else if (obj.is_module()) {
+		make_rst_module(f, obj);
+	}
+}
+
+function generate(f, docs) {
+	const globs = [];
+	const SYMBOLS = {};
+	docs.filter((d) => !d.ignore && d.kind !== 'package').forEach((d) => {
+		SYMBOLS[d.name] = d;
+		if (d.memberof) {
+			const up = SYMBOLS[d.memberof];
+			if (up === undefined) {
+				console.log(d); // eslint-disable-line no-console
+				console.log(`Undefined symbol! ${d.memberof}`); // eslint-disable-line no-console
+				throw new Error('Undefined symbol!');
+			}
+			SYMBOLS[d.memberof].add_member(d);
+		} else {
+			globs.push(d);
+		}
+	});
+
+	f.write('.. _doc_html5_shell_classref:\n\n');
+	globs.forEach((obj) => write_base_object(f, obj));
+}
+
+/**
+ * Generate documentation output.
+ *
+ * @param {TAFFY} data - A TaffyDB collection representing
+ *                       all the symbols documented in your code.
+ * @param {object} opts - An object with options information.
+ */
+exports.publish = function (data, opts) {
+	const docs = data().get().filter((doc) => !doc.undocumented && !doc.ignore).map((doc) => new JSDoclet(doc));
+	const dest = opts.destination;
+	if (dest === 'dry-run') {
+		process.stdout.write('Dry run... ');
+		generate({
+			write: function () { /* noop */ },
+		}, docs);
+		process.stdout.write('Okay!\n');
+		return;
+	}
+	if (dest !== '' && !dest.endsWith('.rst')) {
+		throw new Error('Destination file must be either a ".rst" file, or an empty string (for printing to stdout)');
+	}
+	if (dest !== '') {
+		const f = fs.createWriteStream(dest);
+		generate(f, docs);
+	} else {
+		generate(process.stdout, docs);
+	}
+};
diff --git a/platform/web/js/libs/audio.worklet.js b/platform/web/js/libs/audio.worklet.js
new file mode 100644
index 0000000000..ea4d8cb221
--- /dev/null
+++ b/platform/web/js/libs/audio.worklet.js
@@ -0,0 +1,211 @@
+/*************************************************************************/
+/*  audio.worklet.js                                                     */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+class RingBuffer {
+	constructor(p_buffer, p_state, p_threads) {
+		this.buffer = p_buffer;
+		this.avail = p_state;
+		this.threads = p_threads;
+		this.rpos = 0;
+		this.wpos = 0;
+	}
+
+	data_left() {
+		return this.threads ? Atomics.load(this.avail, 0) : this.avail;
+	}
+
+	space_left() {
+		return this.buffer.length - this.data_left();
+	}
+
+	read(output) {
+		const size = this.buffer.length;
+		let from = 0;
+		let to_write = output.length;
+		if (this.rpos + to_write > size) {
+			const high = size - this.rpos;
+			output.set(this.buffer.subarray(this.rpos, size));
+			from = high;
+			to_write -= high;
+			this.rpos = 0;
+		}
+		if (to_write) {
+			output.set(this.buffer.subarray(this.rpos, this.rpos + to_write), from);
+		}
+		this.rpos += to_write;
+		if (this.threads) {
+			Atomics.add(this.avail, 0, -output.length);
+			Atomics.notify(this.avail, 0);
+		} else {
+			this.avail -= output.length;
+		}
+	}
+
+	write(p_buffer) {
+		const to_write = p_buffer.length;
+		const mw = this.buffer.length - this.wpos;
+		if (mw >= to_write) {
+			this.buffer.set(p_buffer, this.wpos);
+			this.wpos += to_write;
+			if (mw === to_write) {
+				this.wpos = 0;
+			}
+		} else {
+			const high = p_buffer.subarray(0, mw);
+			const low = p_buffer.subarray(mw);
+			this.buffer.set(high, this.wpos);
+			this.buffer.set(low);
+			this.wpos = low.length;
+		}
+		if (this.threads) {
+			Atomics.add(this.avail, 0, to_write);
+			Atomics.notify(this.avail, 0);
+		} else {
+			this.avail += to_write;
+		}
+	}
+}
+
+class GodotProcessor extends AudioWorkletProcessor {
+	constructor() {
+		super();
+		this.threads = false;
+		this.running = true;
+		this.lock = null;
+		this.notifier = null;
+		this.output = null;
+		this.output_buffer = new Float32Array();
+		this.input = null;
+		this.input_buffer = new Float32Array();
+		this.port.onmessage = (event) => {
+			const cmd = event.data['cmd'];
+			const data = event.data['data'];
+			this.parse_message(cmd, data);
+		};
+	}
+
+	process_notify() {
+		if (this.notifier) {
+			Atomics.add(this.notifier, 0, 1);
+			Atomics.notify(this.notifier, 0);
+		}
+	}
+
+	parse_message(p_cmd, p_data) {
+		if (p_cmd === 'start' && p_data) {
+			const state = p_data[0];
+			let idx = 0;
+			this.threads = true;
+			this.lock = state.subarray(idx, ++idx);
+			this.notifier = state.subarray(idx, ++idx);
+			const avail_in = state.subarray(idx, ++idx);
+			const avail_out = state.subarray(idx, ++idx);
+			this.input = new RingBuffer(p_data[1], avail_in, true);
+			this.output = new RingBuffer(p_data[2], avail_out, true);
+		} else if (p_cmd === 'stop') {
+			this.running = false;
+			this.output = null;
+			this.input = null;
+		} else if (p_cmd === 'start_nothreads') {
+			this.output = new RingBuffer(p_data[0], p_data[0].length, false);
+		} else if (p_cmd === 'chunk') {
+			this.output.write(p_data);
+		}
+	}
+
+	static array_has_data(arr) {
+		return arr.length && arr[0].length && arr[0][0].length;
+	}
+
+	process(inputs, outputs, parameters) {
+		if (!this.running) {
+			return false; // Stop processing.
+		}
+		if (this.output === null) {
+			return true; // Not ready yet, keep processing.
+		}
+		const process_input = GodotProcessor.array_has_data(inputs);
+		if (process_input) {
+			const input = inputs[0];
+			const chunk = input[0].length * input.length;
+			if (this.input_buffer.length !== chunk) {
+				this.input_buffer = new Float32Array(chunk);
+			}
+			if (!this.threads) {
+				GodotProcessor.write_input(this.input_buffer, input);
+				this.port.postMessage({ 'cmd': 'input', 'data': this.input_buffer });
+			} else if (this.input.space_left() >= chunk) {
+				GodotProcessor.write_input(this.input_buffer, input);
+				this.input.write(this.input_buffer);
+			} else {
+				this.port.postMessage('Input buffer is full! Skipping input frame.');
+			}
+		}
+		const process_output = GodotProcessor.array_has_data(outputs);
+		if (process_output) {
+			const output = outputs[0];
+			const chunk = output[0].length * output.length;
+			if (this.output_buffer.length !== chunk) {
+				this.output_buffer = new Float32Array(chunk);
+			}
+			if (this.output.data_left() >= chunk) {
+				this.output.read(this.output_buffer);
+				GodotProcessor.write_output(output, this.output_buffer);
+				if (!this.threads) {
+					this.port.postMessage({ 'cmd': 'read', 'data': chunk });
+				}
+			} else {
+				this.port.postMessage('Output buffer has not enough frames! Skipping output frame.');
+			}
+		}
+		this.process_notify();
+		return true;
+	}
+
+	static write_output(dest, source) {
+		const channels = dest.length;
+		for (let ch = 0; ch < channels; ch++) {
+			for (let sample = 0; sample < dest[ch].length; sample++) {
+				dest[ch][sample] = source[sample * channels + ch];
+			}
+		}
+	}
+
+	static write_input(dest, source) {
+		const channels = source.length;
+		for (let ch = 0; ch < channels; ch++) {
+			for (let sample = 0; sample < source[ch].length; sample++) {
+				dest[sample * channels + ch] = source[ch][sample];
+			}
+		}
+	}
+}
+
+registerProcessor('godot-processor', GodotProcessor);
diff --git a/platform/web/js/libs/library_godot_audio.js b/platform/web/js/libs/library_godot_audio.js
new file mode 100644
index 0000000000..756c1ac595
--- /dev/null
+++ b/platform/web/js/libs/library_godot_audio.js
@@ -0,0 +1,484 @@
+/*************************************************************************/
+/*  library_godot_audio.js                                               */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+const GodotAudio = {
+	$GodotAudio__deps: ['$GodotRuntime', '$GodotOS'],
+	$GodotAudio: {
+		ctx: null,
+		input: null,
+		driver: null,
+		interval: 0,
+
+		init: function (mix_rate, latency, onstatechange, onlatencyupdate) {
+			const opts = {};
+			// If mix_rate is 0, let the browser choose.
+			if (mix_rate) {
+				opts['sampleRate'] = mix_rate;
+			}
+			// Do not specify, leave 'interactive' for good performance.
+			// opts['latencyHint'] = latency / 1000;
+			const ctx = new (window.AudioContext || window.webkitAudioContext)(opts);
+			GodotAudio.ctx = ctx;
+			ctx.onstatechange = function () {
+				let state = 0;
+				switch (ctx.state) {
+				case 'suspended':
+					state = 0;
+					break;
+				case 'running':
+					state = 1;
+					break;
+				case 'closed':
+					state = 2;
+					break;
+
+					// no default
+				}
+				onstatechange(state);
+			};
+			ctx.onstatechange(); // Immediately notify state.
+			// Update computed latency
+			GodotAudio.interval = setInterval(function () {
+				let computed_latency = 0;
+				if (ctx.baseLatency) {
+					computed_latency += GodotAudio.ctx.baseLatency;
+				}
+				if (ctx.outputLatency) {
+					computed_latency += GodotAudio.ctx.outputLatency;
+				}
+				onlatencyupdate(computed_latency);
+			}, 1000);
+			GodotOS.atexit(GodotAudio.close_async);
+			return ctx.destination.channelCount;
+		},
+
+		create_input: function (callback) {
+			if (GodotAudio.input) {
+				return 0; // Already started.
+			}
+			function gotMediaInput(stream) {
+				try {
+					GodotAudio.input = GodotAudio.ctx.createMediaStreamSource(stream);
+					callback(GodotAudio.input);
+				} catch (e) {
+					GodotRuntime.error('Failed creaating input.', e);
+				}
+			}
+			if (navigator.mediaDevices && navigator.mediaDevices.getUserMedia) {
+				navigator.mediaDevices.getUserMedia({
+					'audio': true,
+				}).then(gotMediaInput, function (e) {
+					GodotRuntime.error('Error getting user media.', e);
+				});
+			} else {
+				if (!navigator.getUserMedia) {
+					navigator.getUserMedia = navigator.webkitGetUserMedia || navigator.mozGetUserMedia;
+				}
+				if (!navigator.getUserMedia) {
+					GodotRuntime.error('getUserMedia not available.');
+					return 1;
+				}
+				navigator.getUserMedia({
+					'audio': true,
+				}, gotMediaInput, function (e) {
+					GodotRuntime.print(e);
+				});
+			}
+			return 0;
+		},
+
+		close_async: function (resolve, reject) {
+			const ctx = GodotAudio.ctx;
+			GodotAudio.ctx = null;
+			// Audio was not initialized.
+			if (!ctx) {
+				resolve();
+				return;
+			}
+			// Remove latency callback
+			if (GodotAudio.interval) {
+				clearInterval(GodotAudio.interval);
+				GodotAudio.interval = 0;
+			}
+			// Disconnect input, if it was started.
+			if (GodotAudio.input) {
+				GodotAudio.input.disconnect();
+				GodotAudio.input = null;
+			}
+			// Disconnect output
+			let closed = Promise.resolve();
+			if (GodotAudio.driver) {
+				closed = GodotAudio.driver.close();
+			}
+			closed.then(function () {
+				return ctx.close();
+			}).then(function () {
+				ctx.onstatechange = null;
+				resolve();
+			}).catch(function (e) {
+				ctx.onstatechange = null;
+				GodotRuntime.error('Error closing AudioContext', e);
+				resolve();
+			});
+		},
+	},
+
+	godot_audio_is_available__sig: 'i',
+	godot_audio_is_available__proxy: 'sync',
+	godot_audio_is_available: function () {
+		if (!(window.AudioContext || window.webkitAudioContext)) {
+			return 0;
+		}
+		return 1;
+	},
+
+	godot_audio_has_worklet__sig: 'i',
+	godot_audio_has_worklet: function () {
+		return (GodotAudio.ctx && GodotAudio.ctx.audioWorklet) ? 1 : 0;
+	},
+
+	godot_audio_has_script_processor__sig: 'i',
+	godot_audio_has_script_processor: function () {
+		return (GodotAudio.ctx && GodotAudio.ctx.createScriptProcessor) ? 1 : 0;
+	},
+
+	godot_audio_init__sig: 'iiiii',
+	godot_audio_init: function (p_mix_rate, p_latency, p_state_change, p_latency_update) {
+		const statechange = GodotRuntime.get_func(p_state_change);
+		const latencyupdate = GodotRuntime.get_func(p_latency_update);
+		const mix_rate = GodotRuntime.getHeapValue(p_mix_rate, 'i32');
+		const channels = GodotAudio.init(mix_rate, p_latency, statechange, latencyupdate);
+		GodotRuntime.setHeapValue(p_mix_rate, GodotAudio.ctx.sampleRate, 'i32');
+		return channels;
+	},
+
+	godot_audio_resume__sig: 'v',
+	godot_audio_resume: function () {
+		if (GodotAudio.ctx && GodotAudio.ctx.state !== 'running') {
+			GodotAudio.ctx.resume();
+		}
+	},
+
+	godot_audio_capture_start__proxy: 'sync',
+	godot_audio_capture_start__sig: 'i',
+	godot_audio_capture_start: function () {
+		return GodotAudio.create_input(function (input) {
+			input.connect(GodotAudio.driver.get_node());
+		});
+	},
+
+	godot_audio_capture_stop__proxy: 'sync',
+	godot_audio_capture_stop__sig: 'v',
+	godot_audio_capture_stop: function () {
+		if (GodotAudio.input) {
+			const tracks = GodotAudio.input['mediaStream']['getTracks']();
+			for (let i = 0; i < tracks.length; i++) {
+				tracks[i]['stop']();
+			}
+			GodotAudio.input.disconnect();
+			GodotAudio.input = null;
+		}
+	},
+};
+
+autoAddDeps(GodotAudio, '$GodotAudio');
+mergeInto(LibraryManager.library, GodotAudio);
+
+/**
+ * The AudioWorklet API driver, used when threads are available.
+ */
+const GodotAudioWorklet = {
+	$GodotAudioWorklet__deps: ['$GodotAudio', '$GodotConfig'],
+	$GodotAudioWorklet: {
+		promise: null,
+		worklet: null,
+		ring_buffer: null,
+
+		create: function (channels) {
+			const path = GodotConfig.locate_file('godot.audio.worklet.js');
+			GodotAudioWorklet.promise = GodotAudio.ctx.audioWorklet.addModule(path).then(function () {
+				GodotAudioWorklet.worklet = new AudioWorkletNode(
+					GodotAudio.ctx,
+					'godot-processor',
+					{
+						'outputChannelCount': [channels],
+					}
+				);
+				return Promise.resolve();
+			});
+			GodotAudio.driver = GodotAudioWorklet;
+		},
+
+		start: function (in_buf, out_buf, state) {
+			GodotAudioWorklet.promise.then(function () {
+				const node = GodotAudioWorklet.worklet;
+				node.connect(GodotAudio.ctx.destination);
+				node.port.postMessage({
+					'cmd': 'start',
+					'data': [state, in_buf, out_buf],
+				});
+				node.port.onmessage = function (event) {
+					GodotRuntime.error(event.data);
+				};
+			});
+		},
+
+		start_no_threads: function (p_out_buf, p_out_size, out_callback, p_in_buf, p_in_size, in_callback) {
+			function RingBuffer() {
+				let wpos = 0;
+				let rpos = 0;
+				let pending_samples = 0;
+				const wbuf = new Float32Array(p_out_size);
+
+				function send(port) {
+					if (pending_samples === 0) {
+						return;
+					}
+					const buffer = GodotRuntime.heapSub(HEAPF32, p_out_buf, p_out_size);
+					const size = buffer.length;
+					const tot_sent = pending_samples;
+					out_callback(wpos, pending_samples);
+					if (wpos + pending_samples >= size) {
+						const high = size - wpos;
+						wbuf.set(buffer.subarray(wpos, size));
+						pending_samples -= high;
+						wpos = 0;
+					}
+					if (pending_samples > 0) {
+						wbuf.set(buffer.subarray(wpos, wpos + pending_samples), tot_sent - pending_samples);
+					}
+					port.postMessage({ 'cmd': 'chunk', 'data': wbuf.subarray(0, tot_sent) });
+					wpos += pending_samples;
+					pending_samples = 0;
+				}
+				this.receive = function (recv_buf) {
+					const buffer = GodotRuntime.heapSub(HEAPF32, p_in_buf, p_in_size);
+					const from = rpos;
+					let to_write = recv_buf.length;
+					let high = 0;
+					if (rpos + to_write >= p_in_size) {
+						high = p_in_size - rpos;
+						buffer.set(recv_buf.subarray(0, high), rpos);
+						to_write -= high;
+						rpos = 0;
+					}
+					if (to_write) {
+						buffer.set(recv_buf.subarray(high, to_write), rpos);
+					}
+					in_callback(from, recv_buf.length);
+					rpos += to_write;
+				};
+				this.consumed = function (size, port) {
+					pending_samples += size;
+					send(port);
+				};
+			}
+			GodotAudioWorklet.ring_buffer = new RingBuffer();
+			GodotAudioWorklet.promise.then(function () {
+				const node = GodotAudioWorklet.worklet;
+				const buffer = GodotRuntime.heapSlice(HEAPF32, p_out_buf, p_out_size);
+				node.connect(GodotAudio.ctx.destination);
+				node.port.postMessage({
+					'cmd': 'start_nothreads',
+					'data': [buffer, p_in_size],
+				});
+				node.port.onmessage = function (event) {
+					if (!GodotAudioWorklet.worklet) {
+						return;
+					}
+					if (event.data['cmd'] === 'read') {
+						const read = event.data['data'];
+						GodotAudioWorklet.ring_buffer.consumed(read, GodotAudioWorklet.worklet.port);
+					} else if (event.data['cmd'] === 'input') {
+						const buf = event.data['data'];
+						if (buf.length > p_in_size) {
+							GodotRuntime.error('Input chunk is too big');
+							return;
+						}
+						GodotAudioWorklet.ring_buffer.receive(buf);
+					} else {
+						GodotRuntime.error(event.data);
+					}
+				};
+			});
+		},
+
+		get_node: function () {
+			return GodotAudioWorklet.worklet;
+		},
+
+		close: function () {
+			return new Promise(function (resolve, reject) {
+				if (GodotAudioWorklet.promise === null) {
+					return;
+				}
+				GodotAudioWorklet.promise.then(function () {
+					GodotAudioWorklet.worklet.port.postMessage({
+						'cmd': 'stop',
+						'data': null,
+					});
+					GodotAudioWorklet.worklet.disconnect();
+					GodotAudioWorklet.worklet = null;
+					GodotAudioWorklet.promise = null;
+					resolve();
+				}).catch(function (err) { /* aborted? */ });
+			});
+		},
+	},
+
+	godot_audio_worklet_create__sig: 'ii',
+	godot_audio_worklet_create: function (channels) {
+		try {
+			GodotAudioWorklet.create(channels);
+		} catch (e) {
+			GodotRuntime.error('Error starting AudioDriverWorklet', e);
+			return 1;
+		}
+		return 0;
+	},
+
+	godot_audio_worklet_start__sig: 'viiiii',
+	godot_audio_worklet_start: function (p_in_buf, p_in_size, p_out_buf, p_out_size, p_state) {
+		const out_buffer = GodotRuntime.heapSub(HEAPF32, p_out_buf, p_out_size);
+		const in_buffer = GodotRuntime.heapSub(HEAPF32, p_in_buf, p_in_size);
+		const state = GodotRuntime.heapSub(HEAP32, p_state, 4);
+		GodotAudioWorklet.start(in_buffer, out_buffer, state);
+	},
+
+	godot_audio_worklet_start_no_threads__sig: 'viiiiii',
+	godot_audio_worklet_start_no_threads: function (p_out_buf, p_out_size, p_out_callback, p_in_buf, p_in_size, p_in_callback) {
+		const out_callback = GodotRuntime.get_func(p_out_callback);
+		const in_callback = GodotRuntime.get_func(p_in_callback);
+		GodotAudioWorklet.start_no_threads(p_out_buf, p_out_size, out_callback, p_in_buf, p_in_size, in_callback);
+	},
+
+	godot_audio_worklet_state_wait__sig: 'iiii',
+	godot_audio_worklet_state_wait: function (p_state, p_idx, p_expected, p_timeout) {
+		Atomics.wait(HEAP32, (p_state >> 2) + p_idx, p_expected, p_timeout);
+		return Atomics.load(HEAP32, (p_state >> 2) + p_idx);
+	},
+
+	godot_audio_worklet_state_add__sig: 'iiii',
+	godot_audio_worklet_state_add: function (p_state, p_idx, p_value) {
+		return Atomics.add(HEAP32, (p_state >> 2) + p_idx, p_value);
+	},
+
+	godot_audio_worklet_state_get__sig: 'iii',
+	godot_audio_worklet_state_get: function (p_state, p_idx) {
+		return Atomics.load(HEAP32, (p_state >> 2) + p_idx);
+	},
+};
+
+autoAddDeps(GodotAudioWorklet, '$GodotAudioWorklet');
+mergeInto(LibraryManager.library, GodotAudioWorklet);
+
+/*
+ * The deprecated ScriptProcessorNode API, used when threads are disabled.
+ */
+const GodotAudioScript = {
+	$GodotAudioScript__deps: ['$GodotAudio'],
+	$GodotAudioScript: {
+		script: null,
+
+		create: function (buffer_length, channel_count) {
+			GodotAudioScript.script = GodotAudio.ctx.createScriptProcessor(buffer_length, 2, channel_count);
+			GodotAudio.driver = GodotAudioScript;
+			return GodotAudioScript.script.bufferSize;
+		},
+
+		start: function (p_in_buf, p_in_size, p_out_buf, p_out_size, onprocess) {
+			GodotAudioScript.script.onaudioprocess = function (event) {
+				// Read input
+				const inb = GodotRuntime.heapSub(HEAPF32, p_in_buf, p_in_size);
+				const input = event.inputBuffer;
+				if (GodotAudio.input) {
+					const inlen = input.getChannelData(0).length;
+					for (let ch = 0; ch < 2; ch++) {
+						const data = input.getChannelData(ch);
+						for (let s = 0; s < inlen; s++) {
+							inb[s * 2 + ch] = data[s];
+						}
+					}
+				}
+
+				// Let Godot process the input/output.
+				onprocess();
+
+				// Write the output.
+				const outb = GodotRuntime.heapSub(HEAPF32, p_out_buf, p_out_size);
+				const output = event.outputBuffer;
+				const channels = output.numberOfChannels;
+				for (let ch = 0; ch < channels; ch++) {
+					const data = output.getChannelData(ch);
+					// Loop through samples and assign computed values.
+					for (let sample = 0; sample < data.length; sample++) {
+						data[sample] = outb[sample * channels + ch];
+					}
+				}
+			};
+			GodotAudioScript.script.connect(GodotAudio.ctx.destination);
+		},
+
+		get_node: function () {
+			return GodotAudioScript.script;
+		},
+
+		close: function () {
+			return new Promise(function (resolve, reject) {
+				GodotAudioScript.script.disconnect();
+				GodotAudioScript.script.onaudioprocess = null;
+				GodotAudioScript.script = null;
+				resolve();
+			});
+		},
+	},
+
+	godot_audio_script_create__sig: 'iii',
+	godot_audio_script_create: function (buffer_length, channel_count) {
+		const buf_len = GodotRuntime.getHeapValue(buffer_length, 'i32');
+		try {
+			const out_len = GodotAudioScript.create(buf_len, channel_count);
+			GodotRuntime.setHeapValue(buffer_length, out_len, 'i32');
+		} catch (e) {
+			GodotRuntime.error('Error starting AudioDriverScriptProcessor', e);
+			return 1;
+		}
+		return 0;
+	},
+
+	godot_audio_script_start__sig: 'viiiii',
+	godot_audio_script_start: function (p_in_buf, p_in_size, p_out_buf, p_out_size, p_cb) {
+		const onprocess = GodotRuntime.get_func(p_cb);
+		GodotAudioScript.start(p_in_buf, p_in_size, p_out_buf, p_out_size, onprocess);
+	},
+};
+
+autoAddDeps(GodotAudioScript, '$GodotAudioScript');
+mergeInto(LibraryManager.library, GodotAudioScript);
diff --git a/platform/web/js/libs/library_godot_display.js b/platform/web/js/libs/library_godot_display.js
new file mode 100644
index 0000000000..91cb8e728a
--- /dev/null
+++ b/platform/web/js/libs/library_godot_display.js
@@ -0,0 +1,754 @@
+/*************************************************************************/
+/*  library_godot_display.js                                             */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+const GodotDisplayVK = {
+
+	$GodotDisplayVK__deps: ['$GodotRuntime', '$GodotConfig', '$GodotEventListeners'],
+	$GodotDisplayVK__postset: 'GodotOS.atexit(function(resolve, reject) { GodotDisplayVK.clear(); resolve(); });',
+	$GodotDisplayVK: {
+		textinput: null,
+		textarea: null,
+
+		available: function () {
+			return GodotConfig.virtual_keyboard && 'ontouchstart' in window;
+		},
+
+		init: function (input_cb) {
+			function create(what) {
+				const elem = document.createElement(what);
+				elem.style.display = 'none';
+				elem.style.position = 'absolute';
+				elem.style.zIndex = '-1';
+				elem.style.background = 'transparent';
+				elem.style.padding = '0px';
+				elem.style.margin = '0px';
+				elem.style.overflow = 'hidden';
+				elem.style.width = '0px';
+				elem.style.height = '0px';
+				elem.style.border = '0px';
+				elem.style.outline = 'none';
+				elem.readonly = true;
+				elem.disabled = true;
+				GodotEventListeners.add(elem, 'input', function (evt) {
+					const c_str = GodotRuntime.allocString(elem.value);
+					input_cb(c_str, elem.selectionEnd);
+					GodotRuntime.free(c_str);
+				}, false);
+				GodotEventListeners.add(elem, 'blur', function (evt) {
+					elem.style.display = 'none';
+					elem.readonly = true;
+					elem.disabled = true;
+				}, false);
+				GodotConfig.canvas.insertAdjacentElement('beforebegin', elem);
+				return elem;
+			}
+			GodotDisplayVK.textinput = create('input');
+			GodotDisplayVK.textarea = create('textarea');
+			GodotDisplayVK.updateSize();
+		},
+		show: function (text, type, start, end) {
+			if (!GodotDisplayVK.textinput || !GodotDisplayVK.textarea) {
+				return;
+			}
+			if (GodotDisplayVK.textinput.style.display !== '' || GodotDisplayVK.textarea.style.display !== '') {
+				GodotDisplayVK.hide();
+			}
+			GodotDisplayVK.updateSize();
+
+			let elem = GodotDisplayVK.textinput;
+			switch (type) {
+			case 0: // KEYBOARD_TYPE_DEFAULT
+				elem.type = 'text';
+				elem.inputmode = '';
+				break;
+			case 1: // KEYBOARD_TYPE_MULTILINE
+				elem = GodotDisplayVK.textarea;
+				break;
+			case 2: // KEYBOARD_TYPE_NUMBER
+				elem.type = 'text';
+				elem.inputmode = 'numeric';
+				break;
+			case 3: // KEYBOARD_TYPE_NUMBER_DECIMAL
+				elem.type = 'text';
+				elem.inputmode = 'decimal';
+				break;
+			case 4: // KEYBOARD_TYPE_PHONE
+				elem.type = 'tel';
+				elem.inputmode = '';
+				break;
+			case 5: // KEYBOARD_TYPE_EMAIL_ADDRESS
+				elem.type = 'email';
+				elem.inputmode = '';
+				break;
+			case 6: // KEYBOARD_TYPE_PASSWORD
+				elem.type = 'password';
+				elem.inputmode = '';
+				break;
+			case 7: // KEYBOARD_TYPE_URL
+				elem.type = 'url';
+				elem.inputmode = '';
+				break;
+			default:
+				elem.type = 'text';
+				elem.inputmode = '';
+				break;
+			}
+
+			elem.readonly = false;
+			elem.disabled = false;
+			elem.value = text;
+			elem.style.display = 'block';
+			elem.focus();
+			elem.setSelectionRange(start, end);
+		},
+		hide: function () {
+			if (!GodotDisplayVK.textinput || !GodotDisplayVK.textarea) {
+				return;
+			}
+			[GodotDisplayVK.textinput, GodotDisplayVK.textarea].forEach(function (elem) {
+				elem.blur();
+				elem.style.display = 'none';
+				elem.value = '';
+			});
+		},
+		updateSize: function () {
+			if (!GodotDisplayVK.textinput || !GodotDisplayVK.textarea) {
+				return;
+			}
+			const rect = GodotConfig.canvas.getBoundingClientRect();
+			function update(elem) {
+				elem.style.left = `${rect.left}px`;
+				elem.style.top = `${rect.top}px`;
+				elem.style.width = `${rect.width}px`;
+				elem.style.height = `${rect.height}px`;
+			}
+			update(GodotDisplayVK.textinput);
+			update(GodotDisplayVK.textarea);
+		},
+		clear: function () {
+			if (GodotDisplayVK.textinput) {
+				GodotDisplayVK.textinput.remove();
+				GodotDisplayVK.textinput = null;
+			}
+			if (GodotDisplayVK.textarea) {
+				GodotDisplayVK.textarea.remove();
+				GodotDisplayVK.textarea = null;
+			}
+		},
+	},
+};
+mergeInto(LibraryManager.library, GodotDisplayVK);
+
+/*
+ * Display server cursor helper.
+ * Keeps track of cursor status and custom shapes.
+ */
+const GodotDisplayCursor = {
+	$GodotDisplayCursor__deps: ['$GodotOS', '$GodotConfig'],
+	$GodotDisplayCursor__postset: 'GodotOS.atexit(function(resolve, reject) { GodotDisplayCursor.clear(); resolve(); });',
+	$GodotDisplayCursor: {
+		shape: 'auto',
+		visible: true,
+		cursors: {},
+		set_style: function (style) {
+			GodotConfig.canvas.style.cursor = style;
+		},
+		set_shape: function (shape) {
+			GodotDisplayCursor.shape = shape;
+			let css = shape;
+			if (shape in GodotDisplayCursor.cursors) {
+				const c = GodotDisplayCursor.cursors[shape];
+				css = `url("${c.url}") ${c.x} ${c.y}, auto`;
+			}
+			if (GodotDisplayCursor.visible) {
+				GodotDisplayCursor.set_style(css);
+			}
+		},
+		clear: function () {
+			GodotDisplayCursor.set_style('');
+			GodotDisplayCursor.shape = 'auto';
+			GodotDisplayCursor.visible = true;
+			Object.keys(GodotDisplayCursor.cursors).forEach(function (key) {
+				URL.revokeObjectURL(GodotDisplayCursor.cursors[key]);
+				delete GodotDisplayCursor.cursors[key];
+			});
+		},
+		lockPointer: function () {
+			const canvas = GodotConfig.canvas;
+			if (canvas.requestPointerLock) {
+				canvas.requestPointerLock();
+			}
+		},
+		releasePointer: function () {
+			if (document.exitPointerLock) {
+				document.exitPointerLock();
+			}
+		},
+		isPointerLocked: function () {
+			return document.pointerLockElement === GodotConfig.canvas;
+		},
+	},
+};
+mergeInto(LibraryManager.library, GodotDisplayCursor);
+
+const GodotDisplayScreen = {
+	$GodotDisplayScreen__deps: ['$GodotConfig', '$GodotOS', '$GL', 'emscripten_webgl_get_current_context'],
+	$GodotDisplayScreen: {
+		desired_size: [0, 0],
+		hidpi: true,
+		getPixelRatio: function () {
+			return GodotDisplayScreen.hidpi ? window.devicePixelRatio || 1 : 1;
+		},
+		isFullscreen: function () {
+			const elem = document.fullscreenElement || document.mozFullscreenElement
+				|| document.webkitFullscreenElement || document.msFullscreenElement;
+			if (elem) {
+				return elem === GodotConfig.canvas;
+			}
+			// But maybe knowing the element is not supported.
+			return document.fullscreen || document.mozFullScreen
+				|| document.webkitIsFullscreen;
+		},
+		hasFullscreen: function () {
+			return document.fullscreenEnabled || document.mozFullScreenEnabled
+				|| document.webkitFullscreenEnabled;
+		},
+		requestFullscreen: function () {
+			if (!GodotDisplayScreen.hasFullscreen()) {
+				return 1;
+			}
+			const canvas = GodotConfig.canvas;
+			try {
+				const promise = (canvas.requestFullscreen || canvas.msRequestFullscreen
+					|| canvas.mozRequestFullScreen || canvas.mozRequestFullscreen
+					|| canvas.webkitRequestFullscreen
+				).call(canvas);
+				// Some browsers (Safari) return undefined.
+				// For the standard ones, we need to catch it.
+				if (promise) {
+					promise.catch(function () {
+						// nothing to do.
+					});
+				}
+			} catch (e) {
+				return 1;
+			}
+			return 0;
+		},
+		exitFullscreen: function () {
+			if (!GodotDisplayScreen.isFullscreen()) {
+				return 0;
+			}
+			try {
+				const promise = document.exitFullscreen();
+				if (promise) {
+					promise.catch(function () {
+						// nothing to do.
+					});
+				}
+			} catch (e) {
+				return 1;
+			}
+			return 0;
+		},
+		_updateGL: function () {
+			const gl_context_handle = _emscripten_webgl_get_current_context(); // eslint-disable-line no-undef
+			const gl = GL.getContext(gl_context_handle);
+			if (gl) {
+				GL.resizeOffscreenFramebuffer(gl);
+			}
+		},
+		updateSize: function () {
+			const isFullscreen = GodotDisplayScreen.isFullscreen();
+			const wantsFullWindow = GodotConfig.canvas_resize_policy === 2;
+			const noResize = GodotConfig.canvas_resize_policy === 0;
+			const wwidth = GodotDisplayScreen.desired_size[0];
+			const wheight = GodotDisplayScreen.desired_size[1];
+			const canvas = GodotConfig.canvas;
+			let width = wwidth;
+			let height = wheight;
+			if (noResize) {
+				// Don't resize canvas, just update GL if needed.
+				if (canvas.width !== width || canvas.height !== height) {
+					GodotDisplayScreen.desired_size = [canvas.width, canvas.height];
+					GodotDisplayScreen._updateGL();
+					return 1;
+				}
+				return 0;
+			}
+			const scale = GodotDisplayScreen.getPixelRatio();
+			if (isFullscreen || wantsFullWindow) {
+				// We need to match screen size.
+				width = window.innerWidth * scale;
+				height = window.innerHeight * scale;
+			}
+			const csw = `${width / scale}px`;
+			const csh = `${height / scale}px`;
+			if (canvas.style.width !== csw || canvas.style.height !== csh || canvas.width !== width || canvas.height !== height) {
+				// Size doesn't match.
+				// Resize canvas, set correct CSS pixel size, update GL.
+				canvas.width = width;
+				canvas.height = height;
+				canvas.style.width = csw;
+				canvas.style.height = csh;
+				GodotDisplayScreen._updateGL();
+				return 1;
+			}
+			return 0;
+		},
+	},
+};
+mergeInto(LibraryManager.library, GodotDisplayScreen);
+
+/**
+ * Display server interface.
+ *
+ * Exposes all the functions needed by DisplayServer implementation.
+ */
+const GodotDisplay = {
+	$GodotDisplay__deps: ['$GodotConfig', '$GodotRuntime', '$GodotDisplayCursor', '$GodotEventListeners', '$GodotDisplayScreen', '$GodotDisplayVK'],
+	$GodotDisplay: {
+		window_icon: '',
+		getDPI: function () {
+			// devicePixelRatio is given in dppx
+			// https://drafts.csswg.org/css-values/#resolution
+			// > due to the 1:96 fixed ratio of CSS *in* to CSS *px*, 1dppx is equivalent to 96dpi.
+			const dpi = Math.round(window.devicePixelRatio * 96);
+			return dpi >= 96 ? dpi : 96;
+		},
+	},
+
+	godot_js_display_is_swap_ok_cancel__sig: 'i',
+	godot_js_display_is_swap_ok_cancel: function () {
+		const win = (['Windows', 'Win64', 'Win32', 'WinCE']);
+		const plat = navigator.platform || '';
+		if (win.indexOf(plat) !== -1) {
+			return 1;
+		}
+		return 0;
+	},
+
+	godot_js_tts_is_speaking__sig: 'i',
+	godot_js_tts_is_speaking: function () {
+		return window.speechSynthesis.speaking;
+	},
+
+	godot_js_tts_is_paused__sig: 'i',
+	godot_js_tts_is_paused: function () {
+		return window.speechSynthesis.paused;
+	},
+
+	godot_js_tts_get_voices__sig: 'vi',
+	godot_js_tts_get_voices: function (p_callback) {
+		const func = GodotRuntime.get_func(p_callback);
+		try {
+			const arr = [];
+			const voices = window.speechSynthesis.getVoices();
+			for (let i = 0; i < voices.length; i++) {
+				arr.push(`${voices[i].lang};${voices[i].name}`);
+			}
+			const c_ptr = GodotRuntime.allocStringArray(arr);
+			func(arr.length, c_ptr);
+			GodotRuntime.freeStringArray(c_ptr, arr.length);
+		} catch (e) {
+			// Fail graciously.
+		}
+	},
+
+	godot_js_tts_speak__sig: 'viiiffii',
+	godot_js_tts_speak: function (p_text, p_voice, p_volume, p_pitch, p_rate, p_utterance_id, p_callback) {
+		const func = GodotRuntime.get_func(p_callback);
+
+		function listener_end(evt) {
+			evt.currentTarget.cb(1 /*TTS_UTTERANCE_ENDED*/, evt.currentTarget.id, 0);
+		}
+
+		function listener_start(evt) {
+			evt.currentTarget.cb(0 /*TTS_UTTERANCE_STARTED*/, evt.currentTarget.id, 0);
+		}
+
+		function listener_error(evt) {
+			evt.currentTarget.cb(2 /*TTS_UTTERANCE_CANCELED*/, evt.currentTarget.id, 0);
+		}
+
+		function listener_bound(evt) {
+			evt.currentTarget.cb(3 /*TTS_UTTERANCE_BOUNDARY*/, evt.currentTarget.id, evt.charIndex);
+		}
+
+		const utterance = new SpeechSynthesisUtterance(GodotRuntime.parseString(p_text));
+		utterance.rate = p_rate;
+		utterance.pitch = p_pitch;
+		utterance.volume = p_volume / 100.0;
+		utterance.addEventListener('end', listener_end);
+		utterance.addEventListener('start', listener_start);
+		utterance.addEventListener('error', listener_error);
+		utterance.addEventListener('boundary', listener_bound);
+		utterance.id = p_utterance_id;
+		utterance.cb = func;
+		const voice = GodotRuntime.parseString(p_voice);
+		const voices = window.speechSynthesis.getVoices();
+		for (let i = 0; i < voices.length; i++) {
+			if (voices[i].name === voice) {
+				utterance.voice = voices[i];
+				break;
+			}
+		}
+		window.speechSynthesis.resume();
+		window.speechSynthesis.speak(utterance);
+	},
+
+	godot_js_tts_pause__sig: 'v',
+	godot_js_tts_pause: function () {
+		window.speechSynthesis.pause();
+	},
+
+	godot_js_tts_resume__sig: 'v',
+	godot_js_tts_resume: function () {
+		window.speechSynthesis.resume();
+	},
+
+	godot_js_tts_stop__sig: 'v',
+	godot_js_tts_stop: function () {
+		window.speechSynthesis.cancel();
+		window.speechSynthesis.resume();
+	},
+
+	godot_js_display_alert__sig: 'vi',
+	godot_js_display_alert: function (p_text) {
+		window.alert(GodotRuntime.parseString(p_text)); // eslint-disable-line no-alert
+	},
+
+	godot_js_display_screen_dpi_get__sig: 'i',
+	godot_js_display_screen_dpi_get: function () {
+		return GodotDisplay.getDPI();
+	},
+
+	godot_js_display_pixel_ratio_get__sig: 'f',
+	godot_js_display_pixel_ratio_get: function () {
+		return GodotDisplayScreen.getPixelRatio();
+	},
+
+	godot_js_display_fullscreen_request__sig: 'i',
+	godot_js_display_fullscreen_request: function () {
+		return GodotDisplayScreen.requestFullscreen();
+	},
+
+	godot_js_display_fullscreen_exit__sig: 'i',
+	godot_js_display_fullscreen_exit: function () {
+		return GodotDisplayScreen.exitFullscreen();
+	},
+
+	godot_js_display_desired_size_set__sig: 'vii',
+	godot_js_display_desired_size_set: function (width, height) {
+		GodotDisplayScreen.desired_size = [width, height];
+		GodotDisplayScreen.updateSize();
+	},
+
+	godot_js_display_size_update__sig: 'i',
+	godot_js_display_size_update: function () {
+		const updated = GodotDisplayScreen.updateSize();
+		if (updated) {
+			GodotDisplayVK.updateSize();
+		}
+		return updated;
+	},
+
+	godot_js_display_screen_size_get__sig: 'vii',
+	godot_js_display_screen_size_get: function (width, height) {
+		const scale = GodotDisplayScreen.getPixelRatio();
+		GodotRuntime.setHeapValue(width, window.screen.width * scale, 'i32');
+		GodotRuntime.setHeapValue(height, window.screen.height * scale, 'i32');
+	},
+
+	godot_js_display_window_size_get__sig: 'vii',
+	godot_js_display_window_size_get: function (p_width, p_height) {
+		GodotRuntime.setHeapValue(p_width, GodotConfig.canvas.width, 'i32');
+		GodotRuntime.setHeapValue(p_height, GodotConfig.canvas.height, 'i32');
+	},
+
+	godot_js_display_has_webgl__sig: 'ii',
+	godot_js_display_has_webgl: function (p_version) {
+		if (p_version !== 1 && p_version !== 2) {
+			return false;
+		}
+		try {
+			return !!document.createElement('canvas').getContext(p_version === 2 ? 'webgl2' : 'webgl');
+		} catch (e) { /* Not available */ }
+		return false;
+	},
+
+	/*
+	 * Canvas
+	 */
+	godot_js_display_canvas_focus__sig: 'v',
+	godot_js_display_canvas_focus: function () {
+		GodotConfig.canvas.focus();
+	},
+
+	godot_js_display_canvas_is_focused__sig: 'i',
+	godot_js_display_canvas_is_focused: function () {
+		return document.activeElement === GodotConfig.canvas;
+	},
+
+	/*
+	 * Touchscreen
+	 */
+	godot_js_display_touchscreen_is_available__sig: 'i',
+	godot_js_display_touchscreen_is_available: function () {
+		return 'ontouchstart' in window;
+	},
+
+	/*
+	 * Clipboard
+	 */
+	godot_js_display_clipboard_set__sig: 'ii',
+	godot_js_display_clipboard_set: function (p_text) {
+		const text = GodotRuntime.parseString(p_text);
+		if (!navigator.clipboard || !navigator.clipboard.writeText) {
+			return 1;
+		}
+		navigator.clipboard.writeText(text).catch(function (e) {
+			// Setting OS clipboard is only possible from an input callback.
+			GodotRuntime.error('Setting OS clipboard is only possible from an input callback for the Web plafrom. Exception:', e);
+		});
+		return 0;
+	},
+
+	godot_js_display_clipboard_get__sig: 'ii',
+	godot_js_display_clipboard_get: function (callback) {
+		const func = GodotRuntime.get_func(callback);
+		try {
+			navigator.clipboard.readText().then(function (result) {
+				const ptr = GodotRuntime.allocString(result);
+				func(ptr);
+				GodotRuntime.free(ptr);
+			}).catch(function (e) {
+				// Fail graciously.
+			});
+		} catch (e) {
+			// Fail graciously.
+		}
+	},
+
+	/*
+	 * Window
+	 */
+	godot_js_display_window_title_set__sig: 'vi',
+	godot_js_display_window_title_set: function (p_data) {
+		document.title = GodotRuntime.parseString(p_data);
+	},
+
+	godot_js_display_window_icon_set__sig: 'vii',
+	godot_js_display_window_icon_set: function (p_ptr, p_len) {
+		let link = document.getElementById('-gd-engine-icon');
+		if (link === null) {
+			link = document.createElement('link');
+			link.rel = 'icon';
+			link.id = '-gd-engine-icon';
+			document.head.appendChild(link);
+		}
+		const old_icon = GodotDisplay.window_icon;
+		const png = new Blob([GodotRuntime.heapSlice(HEAPU8, p_ptr, p_len)], { type: 'image/png' });
+		GodotDisplay.window_icon = URL.createObjectURL(png);
+		link.href = GodotDisplay.window_icon;
+		if (old_icon) {
+			URL.revokeObjectURL(old_icon);
+		}
+	},
+
+	/*
+	 * Cursor
+	 */
+	godot_js_display_cursor_set_visible__sig: 'vi',
+	godot_js_display_cursor_set_visible: function (p_visible) {
+		const visible = p_visible !== 0;
+		if (visible === GodotDisplayCursor.visible) {
+			return;
+		}
+		GodotDisplayCursor.visible = visible;
+		if (visible) {
+			GodotDisplayCursor.set_shape(GodotDisplayCursor.shape);
+		} else {
+			GodotDisplayCursor.set_style('none');
+		}
+	},
+
+	godot_js_display_cursor_is_hidden__sig: 'i',
+	godot_js_display_cursor_is_hidden: function () {
+		return !GodotDisplayCursor.visible;
+	},
+
+	godot_js_display_cursor_set_shape__sig: 'vi',
+	godot_js_display_cursor_set_shape: function (p_string) {
+		GodotDisplayCursor.set_shape(GodotRuntime.parseString(p_string));
+	},
+
+	godot_js_display_cursor_set_custom_shape__sig: 'viiiii',
+	godot_js_display_cursor_set_custom_shape: function (p_shape, p_ptr, p_len, p_hotspot_x, p_hotspot_y) {
+		const shape = GodotRuntime.parseString(p_shape);
+		const old_shape = GodotDisplayCursor.cursors[shape];
+		if (p_len > 0) {
+			const png = new Blob([GodotRuntime.heapSlice(HEAPU8, p_ptr, p_len)], { type: 'image/png' });
+			const url = URL.createObjectURL(png);
+			GodotDisplayCursor.cursors[shape] = {
+				url: url,
+				x: p_hotspot_x,
+				y: p_hotspot_y,
+			};
+		} else {
+			delete GodotDisplayCursor.cursors[shape];
+		}
+		if (shape === GodotDisplayCursor.shape) {
+			GodotDisplayCursor.set_shape(GodotDisplayCursor.shape);
+		}
+		if (old_shape) {
+			URL.revokeObjectURL(old_shape.url);
+		}
+	},
+
+	godot_js_display_cursor_lock_set__sig: 'vi',
+	godot_js_display_cursor_lock_set: function (p_lock) {
+		if (p_lock) {
+			GodotDisplayCursor.lockPointer();
+		} else {
+			GodotDisplayCursor.releasePointer();
+		}
+	},
+
+	godot_js_display_cursor_is_locked__sig: 'i',
+	godot_js_display_cursor_is_locked: function () {
+		return GodotDisplayCursor.isPointerLocked() ? 1 : 0;
+	},
+
+	/*
+	 * Listeners
+	 */
+	godot_js_display_fullscreen_cb__sig: 'vi',
+	godot_js_display_fullscreen_cb: function (callback) {
+		const canvas = GodotConfig.canvas;
+		const func = GodotRuntime.get_func(callback);
+		function change_cb(evt) {
+			if (evt.target === canvas) {
+				func(GodotDisplayScreen.isFullscreen());
+			}
+		}
+		GodotEventListeners.add(document, 'fullscreenchange', change_cb, false);
+		GodotEventListeners.add(document, 'mozfullscreenchange', change_cb, false);
+		GodotEventListeners.add(document, 'webkitfullscreenchange', change_cb, false);
+	},
+
+	godot_js_display_window_blur_cb__sig: 'vi',
+	godot_js_display_window_blur_cb: function (callback) {
+		const func = GodotRuntime.get_func(callback);
+		GodotEventListeners.add(window, 'blur', function () {
+			func();
+		}, false);
+	},
+
+	godot_js_display_notification_cb__sig: 'viiiii',
+	godot_js_display_notification_cb: function (callback, p_enter, p_exit, p_in, p_out) {
+		const canvas = GodotConfig.canvas;
+		const func = GodotRuntime.get_func(callback);
+		const notif = [p_enter, p_exit, p_in, p_out];
+		['mouseover', 'mouseleave', 'focus', 'blur'].forEach(function (evt_name, idx) {
+			GodotEventListeners.add(canvas, evt_name, function () {
+				func(notif[idx]);
+			}, true);
+		});
+	},
+
+	godot_js_display_setup_canvas__sig: 'viiii',
+	godot_js_display_setup_canvas: function (p_width, p_height, p_fullscreen, p_hidpi) {
+		const canvas = GodotConfig.canvas;
+		GodotEventListeners.add(canvas, 'contextmenu', function (ev) {
+			ev.preventDefault();
+		}, false);
+		GodotEventListeners.add(canvas, 'webglcontextlost', function (ev) {
+			alert('WebGL context lost, please reload the page'); // eslint-disable-line no-alert
+			ev.preventDefault();
+		}, false);
+		GodotDisplayScreen.hidpi = !!p_hidpi;
+		switch (GodotConfig.canvas_resize_policy) {
+		case 0: // None
+			GodotDisplayScreen.desired_size = [canvas.width, canvas.height];
+			break;
+		case 1: // Project
+			GodotDisplayScreen.desired_size = [p_width, p_height];
+			break;
+		default: // Full window
+			// Ensure we display in the right place, the size will be handled by updateSize
+			canvas.style.position = 'absolute';
+			canvas.style.top = 0;
+			canvas.style.left = 0;
+			break;
+		}
+		GodotDisplayScreen.updateSize();
+		if (p_fullscreen) {
+			GodotDisplayScreen.requestFullscreen();
+		}
+	},
+
+	/*
+	 * Virtual Keyboard
+	 */
+	godot_js_display_vk_show__sig: 'viiii',
+	godot_js_display_vk_show: function (p_text, p_type, p_start, p_end) {
+		const text = GodotRuntime.parseString(p_text);
+		const start = p_start > 0 ? p_start : 0;
+		const end = p_end > 0 ? p_end : start;
+		GodotDisplayVK.show(text, p_type, start, end);
+	},
+
+	godot_js_display_vk_hide__sig: 'v',
+	godot_js_display_vk_hide: function () {
+		GodotDisplayVK.hide();
+	},
+
+	godot_js_display_vk_available__sig: 'i',
+	godot_js_display_vk_available: function () {
+		return GodotDisplayVK.available();
+	},
+
+	godot_js_display_tts_available__sig: 'i',
+	godot_js_display_tts_available: function () {
+		return 'speechSynthesis' in window;
+	},
+
+	godot_js_display_vk_cb__sig: 'vi',
+	godot_js_display_vk_cb: function (p_input_cb) {
+		const input_cb = GodotRuntime.get_func(p_input_cb);
+		if (GodotDisplayVK.available()) {
+			GodotDisplayVK.init(input_cb);
+		}
+	},
+};
+
+autoAddDeps(GodotDisplay, '$GodotDisplay');
+mergeInto(LibraryManager.library, GodotDisplay);
diff --git a/platform/web/js/libs/library_godot_fetch.js b/platform/web/js/libs/library_godot_fetch.js
new file mode 100644
index 0000000000..285e50a035
--- /dev/null
+++ b/platform/web/js/libs/library_godot_fetch.js
@@ -0,0 +1,247 @@
+/*************************************************************************/
+/*  library_godot_fetch.js                                               */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+const GodotFetch = {
+	$GodotFetch__deps: ['$IDHandler', '$GodotRuntime'],
+	$GodotFetch: {
+
+		onread: function (id, result) {
+			const obj = IDHandler.get(id);
+			if (!obj) {
+				return;
+			}
+			if (result.value) {
+				obj.chunks.push(result.value);
+			}
+			obj.reading = false;
+			obj.done = result.done;
+		},
+
+		onresponse: function (id, response) {
+			const obj = IDHandler.get(id);
+			if (!obj) {
+				return;
+			}
+			let chunked = false;
+			response.headers.forEach(function (value, header) {
+				const v = value.toLowerCase().trim();
+				const h = header.toLowerCase().trim();
+				if (h === 'transfer-encoding' && v === 'chunked') {
+					chunked = true;
+				}
+			});
+			obj.status = response.status;
+			obj.response = response;
+			obj.reader = response.body.getReader();
+			obj.chunked = chunked;
+		},
+
+		onerror: function (id, err) {
+			GodotRuntime.error(err);
+			const obj = IDHandler.get(id);
+			if (!obj) {
+				return;
+			}
+			obj.error = err;
+		},
+
+		create: function (method, url, headers, body) {
+			const obj = {
+				request: null,
+				response: null,
+				reader: null,
+				error: null,
+				done: false,
+				reading: false,
+				status: 0,
+				chunks: [],
+				bodySize: -1,
+			};
+			const id = IDHandler.add(obj);
+			const init = {
+				method: method,
+				headers: headers,
+				body: body,
+			};
+			obj.request = fetch(url, init);
+			obj.request.then(GodotFetch.onresponse.bind(null, id)).catch(GodotFetch.onerror.bind(null, id));
+			return id;
+		},
+
+		free: function (id) {
+			const obj = IDHandler.get(id);
+			if (!obj) {
+				return;
+			}
+			IDHandler.remove(id);
+			if (!obj.request) {
+				return;
+			}
+			// Try to abort
+			obj.request.then(function (response) {
+				response.abort();
+			}).catch(function (e) { /* nothing to do */ });
+		},
+
+		read: function (id) {
+			const obj = IDHandler.get(id);
+			if (!obj) {
+				return;
+			}
+			if (obj.reader && !obj.reading) {
+				if (obj.done) {
+					obj.reader = null;
+					return;
+				}
+				obj.reading = true;
+				obj.reader.read().then(GodotFetch.onread.bind(null, id)).catch(GodotFetch.onerror.bind(null, id));
+			}
+		},
+	},
+
+	godot_js_fetch_create__sig: 'iiiiiii',
+	godot_js_fetch_create: function (p_method, p_url, p_headers, p_headers_size, p_body, p_body_size) {
+		const method = GodotRuntime.parseString(p_method);
+		const url = GodotRuntime.parseString(p_url);
+		const headers = GodotRuntime.parseStringArray(p_headers, p_headers_size);
+		const body = p_body_size ? GodotRuntime.heapSlice(HEAP8, p_body, p_body_size) : null;
+		return GodotFetch.create(method, url, headers.map(function (hv) {
+			const idx = hv.indexOf(':');
+			if (idx <= 0) {
+				return [];
+			}
+			return [
+				hv.slice(0, idx).trim(),
+				hv.slice(idx + 1).trim(),
+			];
+		}).filter(function (v) {
+			return v.length === 2;
+		}), body);
+	},
+
+	godot_js_fetch_state_get__sig: 'ii',
+	godot_js_fetch_state_get: function (p_id) {
+		const obj = IDHandler.get(p_id);
+		if (!obj) {
+			return -1;
+		}
+		if (obj.error) {
+			return -1;
+		}
+		if (!obj.response) {
+			return 0;
+		}
+		if (obj.reader) {
+			return 1;
+		}
+		if (obj.done) {
+			return 2;
+		}
+		return -1;
+	},
+
+	godot_js_fetch_http_status_get__sig: 'ii',
+	godot_js_fetch_http_status_get: function (p_id) {
+		const obj = IDHandler.get(p_id);
+		if (!obj || !obj.response) {
+			return 0;
+		}
+		return obj.status;
+	},
+
+	godot_js_fetch_read_headers__sig: 'iiii',
+	godot_js_fetch_read_headers: function (p_id, p_parse_cb, p_ref) {
+		const obj = IDHandler.get(p_id);
+		if (!obj || !obj.response) {
+			return 1;
+		}
+		const cb = GodotRuntime.get_func(p_parse_cb);
+		const arr = [];
+		obj.response.headers.forEach(function (v, h) {
+			arr.push(`${h}:${v}`);
+		});
+		const c_ptr = GodotRuntime.allocStringArray(arr);
+		cb(arr.length, c_ptr, p_ref);
+		GodotRuntime.freeStringArray(c_ptr, arr.length);
+		return 0;
+	},
+
+	godot_js_fetch_read_chunk__sig: 'iiii',
+	godot_js_fetch_read_chunk: function (p_id, p_buf, p_buf_size) {
+		const obj = IDHandler.get(p_id);
+		if (!obj || !obj.response) {
+			return 0;
+		}
+		let to_read = p_buf_size;
+		const chunks = obj.chunks;
+		while (to_read && chunks.length) {
+			const chunk = obj.chunks[0];
+			if (chunk.length > to_read) {
+				GodotRuntime.heapCopy(HEAP8, chunk.slice(0, to_read), p_buf);
+				chunks[0] = chunk.slice(to_read);
+				to_read = 0;
+			} else {
+				GodotRuntime.heapCopy(HEAP8, chunk, p_buf);
+				to_read -= chunk.length;
+				chunks.pop();
+			}
+		}
+		if (!chunks.length) {
+			GodotFetch.read(p_id);
+		}
+		return p_buf_size - to_read;
+	},
+
+	godot_js_fetch_body_length_get__sig: 'ii',
+	godot_js_fetch_body_length_get: function (p_id) {
+		const obj = IDHandler.get(p_id);
+		if (!obj || !obj.response) {
+			return -1;
+		}
+		return obj.bodySize;
+	},
+
+	godot_js_fetch_is_chunked__sig: 'ii',
+	godot_js_fetch_is_chunked: function (p_id) {
+		const obj = IDHandler.get(p_id);
+		if (!obj || !obj.response) {
+			return -1;
+		}
+		return obj.chunked ? 1 : 0;
+	},
+
+	godot_js_fetch_free__sig: 'vi',
+	godot_js_fetch_free: function (id) {
+		GodotFetch.free(id);
+	},
+};
+
+autoAddDeps(GodotFetch, '$GodotFetch');
+mergeInto(LibraryManager.library, GodotFetch);
diff --git a/platform/web/js/libs/library_godot_input.js b/platform/web/js/libs/library_godot_input.js
new file mode 100644
index 0000000000..51571d64a2
--- /dev/null
+++ b/platform/web/js/libs/library_godot_input.js
@@ -0,0 +1,549 @@
+/*************************************************************************/
+/*  library_godot_input.js                                               */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+/*
+ * Gamepad API helper.
+ */
+const GodotInputGamepads = {
+	$GodotInputGamepads__deps: ['$GodotRuntime', '$GodotEventListeners'],
+	$GodotInputGamepads: {
+		samples: [],
+
+		get_pads: function () {
+			try {
+				// Will throw in iframe when permission is denied.
+				// Will throw/warn in the future for insecure contexts.
+				// See https://github.com/w3c/gamepad/pull/120
+				const pads = navigator.getGamepads();
+				if (pads) {
+					return pads;
+				}
+				return [];
+			} catch (e) {
+				return [];
+			}
+		},
+
+		get_samples: function () {
+			return GodotInputGamepads.samples;
+		},
+
+		get_sample: function (index) {
+			const samples = GodotInputGamepads.samples;
+			return index < samples.length ? samples[index] : null;
+		},
+
+		sample: function () {
+			const pads = GodotInputGamepads.get_pads();
+			const samples = [];
+			for (let i = 0; i < pads.length; i++) {
+				const pad = pads[i];
+				if (!pad) {
+					samples.push(null);
+					continue;
+				}
+				const s = {
+					standard: pad.mapping === 'standard',
+					buttons: [],
+					axes: [],
+					connected: pad.connected,
+				};
+				for (let b = 0; b < pad.buttons.length; b++) {
+					s.buttons.push(pad.buttons[b].value);
+				}
+				for (let a = 0; a < pad.axes.length; a++) {
+					s.axes.push(pad.axes[a]);
+				}
+				samples.push(s);
+			}
+			GodotInputGamepads.samples = samples;
+		},
+
+		init: function (onchange) {
+			GodotInputGamepads.samples = [];
+			function add(pad) {
+				const guid = GodotInputGamepads.get_guid(pad);
+				const c_id = GodotRuntime.allocString(pad.id);
+				const c_guid = GodotRuntime.allocString(guid);
+				onchange(pad.index, 1, c_id, c_guid);
+				GodotRuntime.free(c_id);
+				GodotRuntime.free(c_guid);
+			}
+			const pads = GodotInputGamepads.get_pads();
+			for (let i = 0; i < pads.length; i++) {
+				// Might be reserved space.
+				if (pads[i]) {
+					add(pads[i]);
+				}
+			}
+			GodotEventListeners.add(window, 'gamepadconnected', function (evt) {
+				if (evt.gamepad) {
+					add(evt.gamepad);
+				}
+			}, false);
+			GodotEventListeners.add(window, 'gamepaddisconnected', function (evt) {
+				if (evt.gamepad) {
+					onchange(evt.gamepad.index, 0);
+				}
+			}, false);
+		},
+
+		get_guid: function (pad) {
+			if (pad.mapping) {
+				return pad.mapping;
+			}
+			const ua = navigator.userAgent;
+			let os = 'Unknown';
+			if (ua.indexOf('Android') >= 0) {
+				os = 'Android';
+			} else if (ua.indexOf('Linux') >= 0) {
+				os = 'Linux';
+			} else if (ua.indexOf('iPhone') >= 0) {
+				os = 'iOS';
+			} else if (ua.indexOf('Macintosh') >= 0) {
+				// Updated iPads will fall into this category.
+				os = 'MacOSX';
+			} else if (ua.indexOf('Windows') >= 0) {
+				os = 'Windows';
+			}
+
+			const id = pad.id;
+			// Chrom* style: NAME (Vendor: xxxx Product: xxxx)
+			const exp1 = /vendor: ([0-9a-f]{4}) product: ([0-9a-f]{4})/i;
+			// Firefox/Safari style (safari may remove leading zeores)
+			const exp2 = /^([0-9a-f]+)-([0-9a-f]+)-/i;
+			let vendor = '';
+			let product = '';
+			if (exp1.test(id)) {
+				const match = exp1.exec(id);
+				vendor = match[1].padStart(4, '0');
+				product = match[2].padStart(4, '0');
+			} else if (exp2.test(id)) {
+				const match = exp2.exec(id);
+				vendor = match[1].padStart(4, '0');
+				product = match[2].padStart(4, '0');
+			}
+			if (!vendor || !product) {
+				return `${os}Unknown`;
+			}
+			return os + vendor + product;
+		},
+	},
+};
+mergeInto(LibraryManager.library, GodotInputGamepads);
+
+/*
+ * Drag and drop helper.
+ * This is pretty big, but basically detect dropped files on GodotConfig.canvas,
+ * process them one by one (recursively for directories), and copies them to
+ * the temporary FS path '/tmp/drop-[random]/' so it can be emitted as a godot
+ * event (that requires a string array of paths).
+ *
+ * NOTE: The temporary files are removed after the callback. This means that
+ * deferred callbacks won't be able to access the files.
+ */
+const GodotInputDragDrop = {
+	$GodotInputDragDrop__deps: ['$FS', '$GodotFS'],
+	$GodotInputDragDrop: {
+		promises: [],
+		pending_files: [],
+
+		add_entry: function (entry) {
+			if (entry.isDirectory) {
+				GodotInputDragDrop.add_dir(entry);
+			} else if (entry.isFile) {
+				GodotInputDragDrop.add_file(entry);
+			} else {
+				GodotRuntime.error('Unrecognized entry...', entry);
+			}
+		},
+
+		add_dir: function (entry) {
+			GodotInputDragDrop.promises.push(new Promise(function (resolve, reject) {
+				const reader = entry.createReader();
+				reader.readEntries(function (entries) {
+					for (let i = 0; i < entries.length; i++) {
+						GodotInputDragDrop.add_entry(entries[i]);
+					}
+					resolve();
+				});
+			}));
+		},
+
+		add_file: function (entry) {
+			GodotInputDragDrop.promises.push(new Promise(function (resolve, reject) {
+				entry.file(function (file) {
+					const reader = new FileReader();
+					reader.onload = function () {
+						const f = {
+							'path': file.relativePath || file.webkitRelativePath,
+							'name': file.name,
+							'type': file.type,
+							'size': file.size,
+							'data': reader.result,
+						};
+						if (!f['path']) {
+							f['path'] = f['name'];
+						}
+						GodotInputDragDrop.pending_files.push(f);
+						resolve();
+					};
+					reader.onerror = function () {
+						GodotRuntime.print('Error reading file');
+						reject();
+					};
+					reader.readAsArrayBuffer(file);
+				}, function (err) {
+					GodotRuntime.print('Error!');
+					reject();
+				});
+			}));
+		},
+
+		process: function (resolve, reject) {
+			if (GodotInputDragDrop.promises.length === 0) {
+				resolve();
+				return;
+			}
+			GodotInputDragDrop.promises.pop().then(function () {
+				setTimeout(function () {
+					GodotInputDragDrop.process(resolve, reject);
+				}, 0);
+			});
+		},
+
+		_process_event: function (ev, callback) {
+			ev.preventDefault();
+			if (ev.dataTransfer.items) {
+				// Use DataTransferItemList interface to access the file(s)
+				for (let i = 0; i < ev.dataTransfer.items.length; i++) {
+					const item = ev.dataTransfer.items[i];
+					let entry = null;
+					if ('getAsEntry' in item) {
+						entry = item.getAsEntry();
+					} else if ('webkitGetAsEntry' in item) {
+						entry = item.webkitGetAsEntry();
+					}
+					if (entry) {
+						GodotInputDragDrop.add_entry(entry);
+					}
+				}
+			} else {
+				GodotRuntime.error('File upload not supported');
+			}
+			new Promise(GodotInputDragDrop.process).then(function () {
+				const DROP = `/tmp/drop-${parseInt(Math.random() * (1 << 30), 10)}/`;
+				const drops = [];
+				const files = [];
+				FS.mkdir(DROP.slice(0, -1)); // Without trailing slash
+				GodotInputDragDrop.pending_files.forEach((elem) => {
+					const path = elem['path'];
+					GodotFS.copy_to_fs(DROP + path, elem['data']);
+					let idx = path.indexOf('/');
+					if (idx === -1) {
+						// Root file
+						drops.push(DROP + path);
+					} else {
+						// Subdir
+						const sub = path.substr(0, idx);
+						idx = sub.indexOf('/');
+						if (idx < 0 && drops.indexOf(DROP + sub) === -1) {
+							drops.push(DROP + sub);
+						}
+					}
+					files.push(DROP + path);
+				});
+				GodotInputDragDrop.promises = [];
+				GodotInputDragDrop.pending_files = [];
+				callback(drops);
+				if (GodotConfig.persistent_drops) {
+					// Delay removal at exit.
+					GodotOS.atexit(function (resolve, reject) {
+						GodotInputDragDrop.remove_drop(files, DROP);
+						resolve();
+					});
+				} else {
+					GodotInputDragDrop.remove_drop(files, DROP);
+				}
+			});
+		},
+
+		remove_drop: function (files, drop_path) {
+			const dirs = [drop_path.substr(0, drop_path.length - 1)];
+			// Remove temporary files
+			files.forEach(function (file) {
+				FS.unlink(file);
+				let dir = file.replace(drop_path, '');
+				let idx = dir.lastIndexOf('/');
+				while (idx > 0) {
+					dir = dir.substr(0, idx);
+					if (dirs.indexOf(drop_path + dir) === -1) {
+						dirs.push(drop_path + dir);
+					}
+					idx = dir.lastIndexOf('/');
+				}
+			});
+			// Remove dirs.
+			dirs.sort(function (a, b) {
+				const al = (a.match(/\//g) || []).length;
+				const bl = (b.match(/\//g) || []).length;
+				if (al > bl) {
+					return -1;
+				} else if (al < bl) {
+					return 1;
+				}
+				return 0;
+			}).forEach(function (dir) {
+				FS.rmdir(dir);
+			});
+		},
+
+		handler: function (callback) {
+			return function (ev) {
+				GodotInputDragDrop._process_event(ev, callback);
+			};
+		},
+	},
+};
+mergeInto(LibraryManager.library, GodotInputDragDrop);
+
+/*
+ * Godot exposed input functions.
+ */
+const GodotInput = {
+	$GodotInput__deps: ['$GodotRuntime', '$GodotConfig', '$GodotEventListeners', '$GodotInputGamepads', '$GodotInputDragDrop'],
+	$GodotInput: {
+		getModifiers: function (evt) {
+			return (evt.shiftKey + 0) + ((evt.altKey + 0) << 1) + ((evt.ctrlKey + 0) << 2) + ((evt.metaKey + 0) << 3);
+		},
+		computePosition: function (evt, rect) {
+			const canvas = GodotConfig.canvas;
+			const rw = canvas.width / rect.width;
+			const rh = canvas.height / rect.height;
+			const x = (evt.clientX - rect.x) * rw;
+			const y = (evt.clientY - rect.y) * rh;
+			return [x, y];
+		},
+	},
+
+	/*
+	 * Mouse API
+	 */
+	godot_js_input_mouse_move_cb__sig: 'vi',
+	godot_js_input_mouse_move_cb: function (callback) {
+		const func = GodotRuntime.get_func(callback);
+		const canvas = GodotConfig.canvas;
+		function move_cb(evt) {
+			const rect = canvas.getBoundingClientRect();
+			const pos = GodotInput.computePosition(evt, rect);
+			// Scale movement
+			const rw = canvas.width / rect.width;
+			const rh = canvas.height / rect.height;
+			const rel_pos_x = evt.movementX * rw;
+			const rel_pos_y = evt.movementY * rh;
+			const modifiers = GodotInput.getModifiers(evt);
+			func(pos[0], pos[1], rel_pos_x, rel_pos_y, modifiers);
+		}
+		GodotEventListeners.add(window, 'mousemove', move_cb, false);
+	},
+
+	godot_js_input_mouse_wheel_cb__sig: 'vi',
+	godot_js_input_mouse_wheel_cb: function (callback) {
+		const func = GodotRuntime.get_func(callback);
+		function wheel_cb(evt) {
+			if (func(evt['deltaX'] || 0, evt['deltaY'] || 0)) {
+				evt.preventDefault();
+			}
+		}
+		GodotEventListeners.add(GodotConfig.canvas, 'wheel', wheel_cb, false);
+	},
+
+	godot_js_input_mouse_button_cb__sig: 'vi',
+	godot_js_input_mouse_button_cb: function (callback) {
+		const func = GodotRuntime.get_func(callback);
+		const canvas = GodotConfig.canvas;
+		function button_cb(p_pressed, evt) {
+			const rect = canvas.getBoundingClientRect();
+			const pos = GodotInput.computePosition(evt, rect);
+			const modifiers = GodotInput.getModifiers(evt);
+			// Since the event is consumed, focus manually.
+			// NOTE: The iframe container may not have focus yet, so focus even when already active.
+			if (p_pressed) {
+				GodotConfig.canvas.focus();
+			}
+			if (func(p_pressed, evt.button, pos[0], pos[1], modifiers)) {
+				evt.preventDefault();
+			}
+		}
+		GodotEventListeners.add(canvas, 'mousedown', button_cb.bind(null, 1), false);
+		GodotEventListeners.add(window, 'mouseup', button_cb.bind(null, 0), false);
+	},
+
+	/*
+	 * Touch API
+	 */
+	godot_js_input_touch_cb__sig: 'viii',
+	godot_js_input_touch_cb: function (callback, ids, coords) {
+		const func = GodotRuntime.get_func(callback);
+		const canvas = GodotConfig.canvas;
+		function touch_cb(type, evt) {
+			// Since the event is consumed, focus manually.
+			// NOTE: The iframe container may not have focus yet, so focus even when already active.
+			if (type === 0) {
+				GodotConfig.canvas.focus();
+			}
+			const rect = canvas.getBoundingClientRect();
+			const touches = evt.changedTouches;
+			for (let i = 0; i < touches.length; i++) {
+				const touch = touches[i];
+				const pos = GodotInput.computePosition(touch, rect);
+				GodotRuntime.setHeapValue(coords + (i * 2) * 8, pos[0], 'double');
+				GodotRuntime.setHeapValue(coords + (i * 2 + 1) * 8, pos[1], 'double');
+				GodotRuntime.setHeapValue(ids + i * 4, touch.identifier, 'i32');
+			}
+			func(type, touches.length);
+			if (evt.cancelable) {
+				evt.preventDefault();
+			}
+		}
+		GodotEventListeners.add(canvas, 'touchstart', touch_cb.bind(null, 0), false);
+		GodotEventListeners.add(canvas, 'touchend', touch_cb.bind(null, 1), false);
+		GodotEventListeners.add(canvas, 'touchcancel', touch_cb.bind(null, 1), false);
+		GodotEventListeners.add(canvas, 'touchmove', touch_cb.bind(null, 2), false);
+	},
+
+	/*
+	 * Key API
+	 */
+	godot_js_input_key_cb__sig: 'viii',
+	godot_js_input_key_cb: function (callback, code, key) {
+		const func = GodotRuntime.get_func(callback);
+		function key_cb(pressed, evt) {
+			const modifiers = GodotInput.getModifiers(evt);
+			GodotRuntime.stringToHeap(evt.code, code, 32);
+			GodotRuntime.stringToHeap(evt.key, key, 32);
+			func(pressed, evt.repeat, modifiers);
+			evt.preventDefault();
+		}
+		GodotEventListeners.add(GodotConfig.canvas, 'keydown', key_cb.bind(null, 1), false);
+		GodotEventListeners.add(GodotConfig.canvas, 'keyup', key_cb.bind(null, 0), false);
+	},
+
+	/*
+	 * Gamepad API
+	 */
+	godot_js_input_gamepad_cb__sig: 'vi',
+	godot_js_input_gamepad_cb: function (change_cb) {
+		const onchange = GodotRuntime.get_func(change_cb);
+		GodotInputGamepads.init(onchange);
+	},
+
+	godot_js_input_gamepad_sample_count__sig: 'i',
+	godot_js_input_gamepad_sample_count: function () {
+		return GodotInputGamepads.get_samples().length;
+	},
+
+	godot_js_input_gamepad_sample__sig: 'i',
+	godot_js_input_gamepad_sample: function () {
+		GodotInputGamepads.sample();
+		return 0;
+	},
+
+	godot_js_input_gamepad_sample_get__sig: 'iiiiiii',
+	godot_js_input_gamepad_sample_get: function (p_index, r_btns, r_btns_num, r_axes, r_axes_num, r_standard) {
+		const sample = GodotInputGamepads.get_sample(p_index);
+		if (!sample || !sample.connected) {
+			return 1;
+		}
+		const btns = sample.buttons;
+		const btns_len = btns.length < 16 ? btns.length : 16;
+		for (let i = 0; i < btns_len; i++) {
+			GodotRuntime.setHeapValue(r_btns + (i << 2), btns[i], 'float');
+		}
+		GodotRuntime.setHeapValue(r_btns_num, btns_len, 'i32');
+		const axes = sample.axes;
+		const axes_len = axes.length < 10 ? axes.length : 10;
+		for (let i = 0; i < axes_len; i++) {
+			GodotRuntime.setHeapValue(r_axes + (i << 2), axes[i], 'float');
+		}
+		GodotRuntime.setHeapValue(r_axes_num, axes_len, 'i32');
+		const is_standard = sample.standard ? 1 : 0;
+		GodotRuntime.setHeapValue(r_standard, is_standard, 'i32');
+		return 0;
+	},
+
+	/*
+	 * Drag/Drop API
+	 */
+	godot_js_input_drop_files_cb__sig: 'vi',
+	godot_js_input_drop_files_cb: function (callback) {
+		const func = GodotRuntime.get_func(callback);
+		const dropFiles = function (files) {
+			const args = files || [];
+			if (!args.length) {
+				return;
+			}
+			const argc = args.length;
+			const argv = GodotRuntime.allocStringArray(args);
+			func(argv, argc);
+			GodotRuntime.freeStringArray(argv, argc);
+		};
+		const canvas = GodotConfig.canvas;
+		GodotEventListeners.add(canvas, 'dragover', function (ev) {
+			// Prevent default behavior (which would try to open the file(s))
+			ev.preventDefault();
+		}, false);
+		GodotEventListeners.add(canvas, 'drop', GodotInputDragDrop.handler(dropFiles));
+	},
+
+	/* Paste API */
+	godot_js_input_paste_cb__sig: 'vi',
+	godot_js_input_paste_cb: function (callback) {
+		const func = GodotRuntime.get_func(callback);
+		GodotEventListeners.add(window, 'paste', function (evt) {
+			const text = evt.clipboardData.getData('text');
+			const ptr = GodotRuntime.allocString(text);
+			func(ptr);
+			GodotRuntime.free(ptr);
+		}, false);
+	},
+
+	godot_js_input_vibrate_handheld__sig: 'vi',
+	godot_js_input_vibrate_handheld: function (p_duration_ms) {
+		if (typeof navigator.vibrate !== 'function') {
+			GodotRuntime.print('This browser does not support vibration.');
+		} else {
+			navigator.vibrate(p_duration_ms);
+		}
+	},
+};
+
+autoAddDeps(GodotInput, '$GodotInput');
+mergeInto(LibraryManager.library, GodotInput);
diff --git a/platform/web/js/libs/library_godot_javascript_singleton.js b/platform/web/js/libs/library_godot_javascript_singleton.js
new file mode 100644
index 0000000000..692f27676a
--- /dev/null
+++ b/platform/web/js/libs/library_godot_javascript_singleton.js
@@ -0,0 +1,346 @@
+/*************************************************************************/
+/*  library_godot_eval.js                                                */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+const GodotJSWrapper = {
+
+	$GodotJSWrapper__deps: ['$GodotRuntime', '$IDHandler'],
+	$GodotJSWrapper__postset: 'GodotJSWrapper.proxies = new Map();',
+	$GodotJSWrapper: {
+		proxies: null,
+		cb_ret: null,
+
+		MyProxy: function (val) {
+			const id = IDHandler.add(this);
+			GodotJSWrapper.proxies.set(val, id);
+			let refs = 1;
+			this.ref = function () {
+				refs++;
+			};
+			this.unref = function () {
+				refs--;
+				if (refs === 0) {
+					IDHandler.remove(id);
+					GodotJSWrapper.proxies.delete(val);
+				}
+			};
+			this.get_val = function () {
+				return val;
+			};
+			this.get_id = function () {
+				return id;
+			};
+		},
+
+		get_proxied: function (val) {
+			const id = GodotJSWrapper.proxies.get(val);
+			if (id === undefined) {
+				const proxy = new GodotJSWrapper.MyProxy(val);
+				return proxy.get_id();
+			}
+			IDHandler.get(id).ref();
+			return id;
+		},
+
+		get_proxied_value: function (id) {
+			const proxy = IDHandler.get(id);
+			if (proxy === undefined) {
+				return undefined;
+			}
+			return proxy.get_val();
+		},
+
+		variant2js: function (type, val) {
+			switch (type) {
+			case 0:
+				return null;
+			case 1:
+				return !!GodotRuntime.getHeapValue(val, 'i64');
+			case 2:
+				return GodotRuntime.getHeapValue(val, 'i64');
+			case 3:
+				return GodotRuntime.getHeapValue(val, 'double');
+			case 4:
+				return GodotRuntime.parseString(GodotRuntime.getHeapValue(val, '*'));
+			case 21: // OBJECT
+				return GodotJSWrapper.get_proxied_value(GodotRuntime.getHeapValue(val, 'i64'));
+			default:
+				return undefined;
+			}
+		},
+
+		js2variant: function (p_val, p_exchange) {
+			if (p_val === undefined || p_val === null) {
+				return 0; // NIL
+			}
+			const type = typeof (p_val);
+			if (type === 'boolean') {
+				GodotRuntime.setHeapValue(p_exchange, p_val, 'i64');
+				return 1; // BOOL
+			} else if (type === 'number') {
+				if (Number.isInteger(p_val)) {
+					GodotRuntime.setHeapValue(p_exchange, p_val, 'i64');
+					return 2; // INT
+				}
+				GodotRuntime.setHeapValue(p_exchange, p_val, 'double');
+				return 3; // REAL
+			} else if (type === 'string') {
+				const c_str = GodotRuntime.allocString(p_val);
+				GodotRuntime.setHeapValue(p_exchange, c_str, '*');
+				return 4; // STRING
+			}
+			const id = GodotJSWrapper.get_proxied(p_val);
+			GodotRuntime.setHeapValue(p_exchange, id, 'i64');
+			return 21;
+		},
+	},
+
+	godot_js_wrapper_interface_get__sig: 'ii',
+	godot_js_wrapper_interface_get: function (p_name) {
+		const name = GodotRuntime.parseString(p_name);
+		if (typeof (window[name]) !== 'undefined') {
+			return GodotJSWrapper.get_proxied(window[name]);
+		}
+		return 0;
+	},
+
+	godot_js_wrapper_object_get__sig: 'iiii',
+	godot_js_wrapper_object_get: function (p_id, p_exchange, p_prop) {
+		const obj = GodotJSWrapper.get_proxied_value(p_id);
+		if (obj === undefined) {
+			return 0;
+		}
+		if (p_prop) {
+			const prop = GodotRuntime.parseString(p_prop);
+			try {
+				return GodotJSWrapper.js2variant(obj[prop], p_exchange);
+			} catch (e) {
+				GodotRuntime.error(`Error getting variable ${prop} on object`, obj);
+				return 0; // NIL
+			}
+		}
+		return GodotJSWrapper.js2variant(obj, p_exchange);
+	},
+
+	godot_js_wrapper_object_set__sig: 'viiii',
+	godot_js_wrapper_object_set: function (p_id, p_name, p_type, p_exchange) {
+		const obj = GodotJSWrapper.get_proxied_value(p_id);
+		if (obj === undefined) {
+			return;
+		}
+		const name = GodotRuntime.parseString(p_name);
+		try {
+			obj[name] = GodotJSWrapper.variant2js(p_type, p_exchange);
+		} catch (e) {
+			GodotRuntime.error(`Error setting variable ${name} on object`, obj);
+		}
+	},
+
+	godot_js_wrapper_object_call__sig: 'iiiiiiiii',
+	godot_js_wrapper_object_call: function (p_id, p_method, p_args, p_argc, p_convert_callback, p_exchange, p_lock, p_free_lock_callback) {
+		const obj = GodotJSWrapper.get_proxied_value(p_id);
+		if (obj === undefined) {
+			return -1;
+		}
+		const method = GodotRuntime.parseString(p_method);
+		const convert = GodotRuntime.get_func(p_convert_callback);
+		const freeLock = GodotRuntime.get_func(p_free_lock_callback);
+		const args = new Array(p_argc);
+		for (let i = 0; i < p_argc; i++) {
+			const type = convert(p_args, i, p_exchange, p_lock);
+			const lock = GodotRuntime.getHeapValue(p_lock, '*');
+			args[i] = GodotJSWrapper.variant2js(type, p_exchange);
+			if (lock) {
+				freeLock(p_lock, type);
+			}
+		}
+		try {
+			const res = obj[method](...args);
+			return GodotJSWrapper.js2variant(res, p_exchange);
+		} catch (e) {
+			GodotRuntime.error(`Error calling method ${method} on:`, obj, 'error:', e);
+			return -1;
+		}
+	},
+
+	godot_js_wrapper_object_unref__sig: 'vi',
+	godot_js_wrapper_object_unref: function (p_id) {
+		const proxy = IDHandler.get(p_id);
+		if (proxy !== undefined) {
+			proxy.unref();
+		}
+	},
+
+	godot_js_wrapper_create_cb__sig: 'iii',
+	godot_js_wrapper_create_cb: function (p_ref, p_func) {
+		const func = GodotRuntime.get_func(p_func);
+		let id = 0;
+		const cb = function () {
+			if (!GodotJSWrapper.get_proxied_value(id)) {
+				return undefined;
+			}
+			// The callback will store the returned value in this variable via
+			// "godot_js_wrapper_object_set_cb_ret" upon calling the user function.
+			// This is safe! JavaScript is single threaded (and using it in threads is not a good idea anyway).
+			GodotJSWrapper.cb_ret = null;
+			const args = Array.from(arguments);
+			func(p_ref, GodotJSWrapper.get_proxied(args), args.length);
+			const ret = GodotJSWrapper.cb_ret;
+			GodotJSWrapper.cb_ret = null;
+			return ret;
+		};
+		id = GodotJSWrapper.get_proxied(cb);
+		return id;
+	},
+
+	godot_js_wrapper_object_set_cb_ret__sig: 'vii',
+	godot_js_wrapper_object_set_cb_ret: function (p_val_type, p_val_ex) {
+		GodotJSWrapper.cb_ret = GodotJSWrapper.variant2js(p_val_type, p_val_ex);
+	},
+
+	godot_js_wrapper_object_getvar__sig: 'iiii',
+	godot_js_wrapper_object_getvar: function (p_id, p_type, p_exchange) {
+		const obj = GodotJSWrapper.get_proxied_value(p_id);
+		if (obj === undefined) {
+			return -1;
+		}
+		const prop = GodotJSWrapper.variant2js(p_type, p_exchange);
+		if (prop === undefined || prop === null) {
+			return -1;
+		}
+		try {
+			return GodotJSWrapper.js2variant(obj[prop], p_exchange);
+		} catch (e) {
+			GodotRuntime.error(`Error getting variable ${prop} on object`, obj, e);
+			return -1;
+		}
+	},
+
+	godot_js_wrapper_object_setvar__sig: 'iiiiii',
+	godot_js_wrapper_object_setvar: function (p_id, p_key_type, p_key_ex, p_val_type, p_val_ex) {
+		const obj = GodotJSWrapper.get_proxied_value(p_id);
+		if (obj === undefined) {
+			return -1;
+		}
+		const key = GodotJSWrapper.variant2js(p_key_type, p_key_ex);
+		try {
+			obj[key] = GodotJSWrapper.variant2js(p_val_type, p_val_ex);
+			return 0;
+		} catch (e) {
+			GodotRuntime.error(`Error setting variable ${key} on object`, obj);
+			return -1;
+		}
+	},
+
+	godot_js_wrapper_create_object__sig: 'iiiiiiii',
+	godot_js_wrapper_create_object: function (p_object, p_args, p_argc, p_convert_callback, p_exchange, p_lock, p_free_lock_callback) {
+		const name = GodotRuntime.parseString(p_object);
+		if (typeof (window[name]) === 'undefined') {
+			return -1;
+		}
+		const convert = GodotRuntime.get_func(p_convert_callback);
+		const freeLock = GodotRuntime.get_func(p_free_lock_callback);
+		const args = new Array(p_argc);
+		for (let i = 0; i < p_argc; i++) {
+			const type = convert(p_args, i, p_exchange, p_lock);
+			const lock = GodotRuntime.getHeapValue(p_lock, '*');
+			args[i] = GodotJSWrapper.variant2js(type, p_exchange);
+			if (lock) {
+				freeLock(p_lock, type);
+			}
+		}
+		try {
+			const res = new window[name](...args);
+			return GodotJSWrapper.js2variant(res, p_exchange);
+		} catch (e) {
+			GodotRuntime.error(`Error calling constructor ${name} with args:`, args, 'error:', e);
+			return -1;
+		}
+	},
+};
+
+autoAddDeps(GodotJSWrapper, '$GodotJSWrapper');
+mergeInto(LibraryManager.library, GodotJSWrapper);
+
+const GodotEval = {
+	godot_js_eval__deps: ['$GodotRuntime'],
+	godot_js_eval__sig: 'iiiiiii',
+	godot_js_eval: function (p_js, p_use_global_ctx, p_union_ptr, p_byte_arr, p_byte_arr_write, p_callback) {
+		const js_code = GodotRuntime.parseString(p_js);
+		let eval_ret = null;
+		try {
+			if (p_use_global_ctx) {
+				// indirect eval call grants global execution context
+				const global_eval = eval; // eslint-disable-line no-eval
+				eval_ret = global_eval(js_code);
+			} else {
+				eval_ret = eval(js_code); // eslint-disable-line no-eval
+			}
+		} catch (e) {
+			GodotRuntime.error(e);
+		}
+
+		switch (typeof eval_ret) {
+		case 'boolean':
+			GodotRuntime.setHeapValue(p_union_ptr, eval_ret, 'i32');
+			return 1; // BOOL
+
+		case 'number':
+			GodotRuntime.setHeapValue(p_union_ptr, eval_ret, 'double');
+			return 3; // REAL
+
+		case 'string':
+			GodotRuntime.setHeapValue(p_union_ptr, GodotRuntime.allocString(eval_ret), '*');
+			return 4; // STRING
+
+		case 'object':
+			if (eval_ret === null) {
+				break;
+			}
+
+			if (ArrayBuffer.isView(eval_ret) && !(eval_ret instanceof Uint8Array)) {
+				eval_ret = new Uint8Array(eval_ret.buffer);
+			} else if (eval_ret instanceof ArrayBuffer) {
+				eval_ret = new Uint8Array(eval_ret);
+			}
+			if (eval_ret instanceof Uint8Array) {
+				const func = GodotRuntime.get_func(p_callback);
+				const bytes_ptr = func(p_byte_arr, p_byte_arr_write, eval_ret.length);
+				HEAPU8.set(eval_ret, bytes_ptr);
+				return 20; // POOL_BYTE_ARRAY
+			}
+			break;
+
+			// no default
+		}
+		return 0; // NIL
+	},
+};
+
+mergeInto(LibraryManager.library, GodotEval);
diff --git a/platform/web/js/libs/library_godot_os.js b/platform/web/js/libs/library_godot_os.js
new file mode 100644
index 0000000000..377eec3234
--- /dev/null
+++ b/platform/web/js/libs/library_godot_os.js
@@ -0,0 +1,427 @@
+/*************************************************************************/
+/*  library_godot_os.js                                                  */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+const IDHandler = {
+	$IDHandler: {
+		_last_id: 0,
+		_references: {},
+
+		get: function (p_id) {
+			return IDHandler._references[p_id];
+		},
+
+		add: function (p_data) {
+			const id = ++IDHandler._last_id;
+			IDHandler._references[id] = p_data;
+			return id;
+		},
+
+		remove: function (p_id) {
+			delete IDHandler._references[p_id];
+		},
+	},
+};
+
+autoAddDeps(IDHandler, '$IDHandler');
+mergeInto(LibraryManager.library, IDHandler);
+
+const GodotConfig = {
+	$GodotConfig__postset: 'Module["initConfig"] = GodotConfig.init_config;',
+	$GodotConfig__deps: ['$GodotRuntime'],
+	$GodotConfig: {
+		canvas: null,
+		locale: 'en',
+		canvas_resize_policy: 2, // Adaptive
+		virtual_keyboard: false,
+		persistent_drops: false,
+		on_execute: null,
+		on_exit: null,
+
+		init_config: function (p_opts) {
+			GodotConfig.canvas_resize_policy = p_opts['canvasResizePolicy'];
+			GodotConfig.canvas = p_opts['canvas'];
+			GodotConfig.locale = p_opts['locale'] || GodotConfig.locale;
+			GodotConfig.virtual_keyboard = p_opts['virtualKeyboard'];
+			GodotConfig.persistent_drops = !!p_opts['persistentDrops'];
+			GodotConfig.on_execute = p_opts['onExecute'];
+			GodotConfig.on_exit = p_opts['onExit'];
+			if (p_opts['focusCanvas']) {
+				GodotConfig.canvas.focus();
+			}
+		},
+
+		locate_file: function (file) {
+			return Module['locateFile'](file); // eslint-disable-line no-undef
+		},
+		clear: function () {
+			GodotConfig.canvas = null;
+			GodotConfig.locale = 'en';
+			GodotConfig.canvas_resize_policy = 2;
+			GodotConfig.virtual_keyboard = false;
+			GodotConfig.persistent_drops = false;
+			GodotConfig.on_execute = null;
+			GodotConfig.on_exit = null;
+		},
+	},
+
+	godot_js_config_canvas_id_get__sig: 'vii',
+	godot_js_config_canvas_id_get: function (p_ptr, p_ptr_max) {
+		GodotRuntime.stringToHeap(`#${GodotConfig.canvas.id}`, p_ptr, p_ptr_max);
+	},
+
+	godot_js_config_locale_get__sig: 'vii',
+	godot_js_config_locale_get: function (p_ptr, p_ptr_max) {
+		GodotRuntime.stringToHeap(GodotConfig.locale, p_ptr, p_ptr_max);
+	},
+};
+
+autoAddDeps(GodotConfig, '$GodotConfig');
+mergeInto(LibraryManager.library, GodotConfig);
+
+const GodotFS = {
+	$GodotFS__deps: ['$ERRNO_CODES', '$FS', '$IDBFS', '$GodotRuntime'],
+	$GodotFS__postset: [
+		'Module["initFS"] = GodotFS.init;',
+		'Module["copyToFS"] = GodotFS.copy_to_fs;',
+	].join(''),
+	$GodotFS: {
+		_idbfs: false,
+		_syncing: false,
+		_mount_points: [],
+
+		is_persistent: function () {
+			return GodotFS._idbfs ? 1 : 0;
+		},
+
+		// Initialize godot file system, setting up persistent paths.
+		// Returns a promise that resolves when the FS is ready.
+		// We keep track of mount_points, so that we can properly close the IDBFS
+		// since emscripten is not doing it by itself. (emscripten GH#12516).
+		init: function (persistentPaths) {
+			GodotFS._idbfs = false;
+			if (!Array.isArray(persistentPaths)) {
+				return Promise.reject(new Error('Persistent paths must be an array'));
+			}
+			if (!persistentPaths.length) {
+				return Promise.resolve();
+			}
+			GodotFS._mount_points = persistentPaths.slice();
+
+			function createRecursive(dir) {
+				try {
+					FS.stat(dir);
+				} catch (e) {
+					if (e.errno !== ERRNO_CODES.ENOENT) {
+						throw e;
+					}
+					FS.mkdirTree(dir);
+				}
+			}
+
+			GodotFS._mount_points.forEach(function (path) {
+				createRecursive(path);
+				FS.mount(IDBFS, {}, path);
+			});
+			return new Promise(function (resolve, reject) {
+				FS.syncfs(true, function (err) {
+					if (err) {
+						GodotFS._mount_points = [];
+						GodotFS._idbfs = false;
+						GodotRuntime.print(`IndexedDB not available: ${err.message}`);
+					} else {
+						GodotFS._idbfs = true;
+					}
+					resolve(err);
+				});
+			});
+		},
+
+		// Deinit godot file system, making sure to unmount file systems, and close IDBFS(s).
+		deinit: function () {
+			GodotFS._mount_points.forEach(function (path) {
+				try {
+					FS.unmount(path);
+				} catch (e) {
+					GodotRuntime.print('Already unmounted', e);
+				}
+				if (GodotFS._idbfs && IDBFS.dbs[path]) {
+					IDBFS.dbs[path].close();
+					delete IDBFS.dbs[path];
+				}
+			});
+			GodotFS._mount_points = [];
+			GodotFS._idbfs = false;
+			GodotFS._syncing = false;
+		},
+
+		sync: function () {
+			if (GodotFS._syncing) {
+				GodotRuntime.error('Already syncing!');
+				return Promise.resolve();
+			}
+			GodotFS._syncing = true;
+			return new Promise(function (resolve, reject) {
+				FS.syncfs(false, function (error) {
+					if (error) {
+						GodotRuntime.error(`Failed to save IDB file system: ${error.message}`);
+					}
+					GodotFS._syncing = false;
+					resolve(error);
+				});
+			});
+		},
+
+		// Copies a buffer to the internal file system. Creating directories recursively.
+		copy_to_fs: function (path, buffer) {
+			const idx = path.lastIndexOf('/');
+			let dir = '/';
+			if (idx > 0) {
+				dir = path.slice(0, idx);
+			}
+			try {
+				FS.stat(dir);
+			} catch (e) {
+				if (e.errno !== ERRNO_CODES.ENOENT) {
+					throw e;
+				}
+				FS.mkdirTree(dir);
+			}
+			FS.writeFile(path, new Uint8Array(buffer));
+		},
+	},
+};
+mergeInto(LibraryManager.library, GodotFS);
+
+const GodotOS = {
+	$GodotOS__deps: ['$GodotRuntime', '$GodotConfig', '$GodotFS'],
+	$GodotOS__postset: [
+		'Module["request_quit"] = function() { GodotOS.request_quit() };',
+		'Module["onExit"] = GodotOS.cleanup;',
+		'GodotOS._fs_sync_promise = Promise.resolve();',
+	].join(''),
+	$GodotOS: {
+		request_quit: function () {},
+		_async_cbs: [],
+		_fs_sync_promise: null,
+
+		atexit: function (p_promise_cb) {
+			GodotOS._async_cbs.push(p_promise_cb);
+		},
+
+		cleanup: function (exit_code) {
+			const cb = GodotConfig.on_exit;
+			GodotFS.deinit();
+			GodotConfig.clear();
+			if (cb) {
+				cb(exit_code);
+			}
+		},
+
+		finish_async: function (callback) {
+			GodotOS._fs_sync_promise.then(function (err) {
+				const promises = [];
+				GodotOS._async_cbs.forEach(function (cb) {
+					promises.push(new Promise(cb));
+				});
+				return Promise.all(promises);
+			}).then(function () {
+				return GodotFS.sync(); // Final FS sync.
+			}).then(function (err) {
+				// Always deferred.
+				setTimeout(function () {
+					callback();
+				}, 0);
+			});
+		},
+	},
+
+	godot_js_os_finish_async__sig: 'vi',
+	godot_js_os_finish_async: function (p_callback) {
+		const func = GodotRuntime.get_func(p_callback);
+		GodotOS.finish_async(func);
+	},
+
+	godot_js_os_request_quit_cb__sig: 'vi',
+	godot_js_os_request_quit_cb: function (p_callback) {
+		GodotOS.request_quit = GodotRuntime.get_func(p_callback);
+	},
+
+	godot_js_os_fs_is_persistent__sig: 'i',
+	godot_js_os_fs_is_persistent: function () {
+		return GodotFS.is_persistent();
+	},
+
+	godot_js_os_fs_sync__sig: 'vi',
+	godot_js_os_fs_sync: function (callback) {
+		const func = GodotRuntime.get_func(callback);
+		GodotOS._fs_sync_promise = GodotFS.sync();
+		GodotOS._fs_sync_promise.then(function (err) {
+			func();
+		});
+	},
+
+	godot_js_os_execute__sig: 'ii',
+	godot_js_os_execute: function (p_json) {
+		const json_args = GodotRuntime.parseString(p_json);
+		const args = JSON.parse(json_args);
+		if (GodotConfig.on_execute) {
+			GodotConfig.on_execute(args);
+			return 0;
+		}
+		return 1;
+	},
+
+	godot_js_os_shell_open__sig: 'vi',
+	godot_js_os_shell_open: function (p_uri) {
+		window.open(GodotRuntime.parseString(p_uri), '_blank');
+	},
+
+	godot_js_os_hw_concurrency_get__sig: 'i',
+	godot_js_os_hw_concurrency_get: function () {
+		// TODO Godot core needs fixing to avoid spawning too many threads (> 24).
+		const concurrency = navigator.hardwareConcurrency || 1;
+		return concurrency < 2 ? concurrency : 2;
+	},
+
+	godot_js_os_download_buffer__sig: 'viiii',
+	godot_js_os_download_buffer: function (p_ptr, p_size, p_name, p_mime) {
+		const buf = GodotRuntime.heapSlice(HEAP8, p_ptr, p_size);
+		const name = GodotRuntime.parseString(p_name);
+		const mime = GodotRuntime.parseString(p_mime);
+		const blob = new Blob([buf], { type: mime });
+		const url = window.URL.createObjectURL(blob);
+		const a = document.createElement('a');
+		a.href = url;
+		a.download = name;
+		a.style.display = 'none';
+		document.body.appendChild(a);
+		a.click();
+		a.remove();
+		window.URL.revokeObjectURL(url);
+	},
+};
+
+autoAddDeps(GodotOS, '$GodotOS');
+mergeInto(LibraryManager.library, GodotOS);
+
+/*
+ * Godot event listeners.
+ * Keeps track of registered event listeners so it can remove them on shutdown.
+ */
+const GodotEventListeners = {
+	$GodotEventListeners__deps: ['$GodotOS'],
+	$GodotEventListeners__postset: 'GodotOS.atexit(function(resolve, reject) { GodotEventListeners.clear(); resolve(); });',
+	$GodotEventListeners: {
+		handlers: [],
+
+		has: function (target, event, method, capture) {
+			return GodotEventListeners.handlers.findIndex(function (e) {
+				return e.target === target && e.event === event && e.method === method && e.capture === capture;
+			}) !== -1;
+		},
+
+		add: function (target, event, method, capture) {
+			if (GodotEventListeners.has(target, event, method, capture)) {
+				return;
+			}
+			function Handler(p_target, p_event, p_method, p_capture) {
+				this.target = p_target;
+				this.event = p_event;
+				this.method = p_method;
+				this.capture = p_capture;
+			}
+			GodotEventListeners.handlers.push(new Handler(target, event, method, capture));
+			target.addEventListener(event, method, capture);
+		},
+
+		clear: function () {
+			GodotEventListeners.handlers.forEach(function (h) {
+				h.target.removeEventListener(h.event, h.method, h.capture);
+			});
+			GodotEventListeners.handlers.length = 0;
+		},
+	},
+};
+mergeInto(LibraryManager.library, GodotEventListeners);
+
+const GodotPWA = {
+
+	$GodotPWA__deps: ['$GodotRuntime', '$GodotEventListeners'],
+	$GodotPWA: {
+		hasUpdate: false,
+
+		updateState: function (cb, reg) {
+			if (!reg) {
+				return;
+			}
+			if (!reg.active) {
+				return;
+			}
+			if (reg.waiting) {
+				GodotPWA.hasUpdate = true;
+				cb();
+			}
+			GodotEventListeners.add(reg, 'updatefound', function () {
+				const installing = reg.installing;
+				GodotEventListeners.add(installing, 'statechange', function () {
+					if (installing.state === 'installed') {
+						GodotPWA.hasUpdate = true;
+						cb();
+					}
+				});
+			});
+		},
+	},
+
+	godot_js_pwa_cb__sig: 'vi',
+	godot_js_pwa_cb: function (p_update_cb) {
+		if ('serviceWorker' in navigator) {
+			const cb = GodotRuntime.get_func(p_update_cb);
+			navigator.serviceWorker.getRegistration().then(GodotPWA.updateState.bind(null, cb));
+		}
+	},
+
+	godot_js_pwa_update__sig: 'i',
+	godot_js_pwa_update: function () {
+		if ('serviceWorker' in navigator && GodotPWA.hasUpdate) {
+			navigator.serviceWorker.getRegistration().then(function (reg) {
+				if (!reg || !reg.waiting) {
+					return;
+				}
+				reg.waiting.postMessage('update');
+			});
+			return 0;
+		}
+		return 1;
+	},
+};
+
+autoAddDeps(GodotPWA, '$GodotPWA');
+mergeInto(LibraryManager.library, GodotPWA);
diff --git a/platform/web/js/libs/library_godot_runtime.js b/platform/web/js/libs/library_godot_runtime.js
new file mode 100644
index 0000000000..e2f7c8dca6
--- /dev/null
+++ b/platform/web/js/libs/library_godot_runtime.js
@@ -0,0 +1,134 @@
+/*************************************************************************/
+/*  library_godot_runtime.js                                             */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+const GodotRuntime = {
+	$GodotRuntime: {
+		/*
+		 * Functions
+		 */
+		get_func: function (ptr) {
+			return wasmTable.get(ptr); // eslint-disable-line no-undef
+		},
+
+		/*
+		 * Prints
+		 */
+		error: function () {
+			err.apply(null, Array.from(arguments)); // eslint-disable-line no-undef
+		},
+
+		print: function () {
+			out.apply(null, Array.from(arguments)); // eslint-disable-line no-undef
+		},
+
+		/*
+		 * Memory
+		 */
+		malloc: function (p_size) {
+			return _malloc(p_size); // eslint-disable-line no-undef
+		},
+
+		free: function (p_ptr) {
+			_free(p_ptr); // eslint-disable-line no-undef
+		},
+
+		getHeapValue: function (p_ptr, p_type) {
+			return getValue(p_ptr, p_type); // eslint-disable-line no-undef
+		},
+
+		setHeapValue: function (p_ptr, p_value, p_type) {
+			setValue(p_ptr, p_value, p_type); // eslint-disable-line no-undef
+		},
+
+		heapSub: function (p_heap, p_ptr, p_len) {
+			const bytes = p_heap.BYTES_PER_ELEMENT;
+			return p_heap.subarray(p_ptr / bytes, p_ptr / bytes + p_len);
+		},
+
+		heapSlice: function (p_heap, p_ptr, p_len) {
+			const bytes = p_heap.BYTES_PER_ELEMENT;
+			return p_heap.slice(p_ptr / bytes, p_ptr / bytes + p_len);
+		},
+
+		heapCopy: function (p_dst, p_src, p_ptr) {
+			const bytes = p_src.BYTES_PER_ELEMENT;
+			return p_dst.set(p_src, p_ptr / bytes);
+		},
+
+		/*
+		 * Strings
+		 */
+		parseString: function (p_ptr) {
+			return UTF8ToString(p_ptr); // eslint-disable-line no-undef
+		},
+
+		parseStringArray: function (p_ptr, p_size) {
+			const strings = [];
+			const ptrs = GodotRuntime.heapSub(HEAP32, p_ptr, p_size); // TODO wasm64
+			ptrs.forEach(function (ptr) {
+				strings.push(GodotRuntime.parseString(ptr));
+			});
+			return strings;
+		},
+
+		strlen: function (p_str) {
+			return lengthBytesUTF8(p_str); // eslint-disable-line no-undef
+		},
+
+		allocString: function (p_str) {
+			const length = GodotRuntime.strlen(p_str) + 1;
+			const c_str = GodotRuntime.malloc(length);
+			stringToUTF8(p_str, c_str, length); // eslint-disable-line no-undef
+			return c_str;
+		},
+
+		allocStringArray: function (p_strings) {
+			const size = p_strings.length;
+			const c_ptr = GodotRuntime.malloc(size * 4);
+			for (let i = 0; i < size; i++) {
+				HEAP32[(c_ptr >> 2) + i] = GodotRuntime.allocString(p_strings[i]);
+			}
+			return c_ptr;
+		},
+
+		freeStringArray: function (p_ptr, p_len) {
+			for (let i = 0; i < p_len; i++) {
+				GodotRuntime.free(HEAP32[(p_ptr >> 2) + i]);
+			}
+			GodotRuntime.free(p_ptr);
+		},
+
+		stringToHeap: function (p_str, p_ptr, p_len) {
+			return stringToUTF8Array(p_str, HEAP8, p_ptr, p_len); // eslint-disable-line no-undef
+		},
+	},
+};
+autoAddDeps(GodotRuntime, '$GodotRuntime');
+mergeInto(LibraryManager.library, GodotRuntime);
diff --git a/platform/web/logo.png b/platform/web/logo.png
new file mode 100644
index 0000000000..c046d87dc4
--- /dev/null
+++ b/platform/web/logo.png
diff --git a/platform/web/os_web.cpp b/platform/web/os_web.cpp
new file mode 100644
index 0000000000..461dc71119
--- /dev/null
+++ b/platform/web/os_web.cpp
@@ -0,0 +1,275 @@
+/*************************************************************************/
+/*  os_web.cpp                                                           */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "os_web.h"
+
+#include "core/debugger/engine_debugger.h"
+#include "drivers/unix/dir_access_unix.h"
+#include "drivers/unix/file_access_unix.h"
+#include "main/main.h"
+#include "platform/web/display_server_web.h"
+
+#include "modules/modules_enabled.gen.h" // For websocket.
+#ifdef MODULE_WEBSOCKET_ENABLED
+#include "modules/websocket/remote_debugger_peer_websocket.h"
+#endif
+
+#include <dlfcn.h>
+#include <emscripten.h>
+#include <stdlib.h>
+
+#include "api/javascript_singleton.h"
+#include "godot_js.h"
+
+void OS_Web::alert(const String &p_alert, const String &p_title) {
+	godot_js_display_alert(p_alert.utf8().get_data());
+}
+
+// Lifecycle
+void OS_Web::initialize() {
+	OS_Unix::initialize_core();
+	DisplayServerWeb::register_web_driver();
+
+#ifdef MODULE_WEBSOCKET_ENABLED
+	EngineDebugger::register_uri_handler("ws://", RemoteDebuggerPeerWebSocket::create);
+	EngineDebugger::register_uri_handler("wss://", RemoteDebuggerPeerWebSocket::create);
+#endif
+}
+
+void OS_Web::resume_audio() {
+	AudioDriverWeb::resume();
+}
+
+void OS_Web::set_main_loop(MainLoop *p_main_loop) {
+	main_loop = p_main_loop;
+}
+
+MainLoop *OS_Web::get_main_loop() const {
+	return main_loop;
+}
+
+void OS_Web::fs_sync_callback() {
+	get_singleton()->idb_is_syncing = false;
+}
+
+bool OS_Web::main_loop_iterate() {
+	if (is_userfs_persistent() && idb_needs_sync && !idb_is_syncing) {
+		idb_is_syncing = true;
+		idb_needs_sync = false;
+		godot_js_os_fs_sync(&fs_sync_callback);
+	}
+
+	DisplayServer::get_singleton()->process_events();
+
+	return Main::iteration();
+}
+
+void OS_Web::delete_main_loop() {
+	if (main_loop) {
+		memdelete(main_loop);
+	}
+	main_loop = nullptr;
+}
+
+void OS_Web::finalize() {
+	delete_main_loop();
+	for (AudioDriverWeb *driver : audio_drivers) {
+		memdelete(driver);
+	}
+	audio_drivers.clear();
+}
+
+// Miscellaneous
+
+Error OS_Web::execute(const String &p_path, const List<String> &p_arguments, String *r_pipe, int *r_exitcode, bool read_stderr, Mutex *p_pipe_mutex, bool p_open_console) {
+	return create_process(p_path, p_arguments);
+}
+
+Error OS_Web::create_process(const String &p_path, const List<String> &p_arguments, ProcessID *r_child_id, bool p_open_console) {
+	Array args;
+	for (const String &E : p_arguments) {
+		args.push_back(E);
+	}
+	String json_args = Variant(args).to_json_string();
+	int failed = godot_js_os_execute(json_args.utf8().get_data());
+	ERR_FAIL_COND_V_MSG(failed, ERR_UNAVAILABLE, "OS::execute() or create_process() must be implemented in Web via 'engine.setOnExecute' if required.");
+	return OK;
+}
+
+Error OS_Web::kill(const ProcessID &p_pid) {
+	ERR_FAIL_V_MSG(ERR_UNAVAILABLE, "OS::kill() is not available on the Web platform.");
+}
+
+int OS_Web::get_process_id() const {
+	ERR_FAIL_V_MSG(0, "OS::get_process_id() is not available on the Web platform.");
+}
+
+bool OS_Web::is_process_running(const ProcessID &p_pid) const {
+	return false;
+}
+
+int OS_Web::get_processor_count() const {
+	return godot_js_os_hw_concurrency_get();
+}
+
+bool OS_Web::_check_internal_feature_support(const String &p_feature) {
+	if (p_feature == "html5" || p_feature == "web") {
+		return true;
+	}
+
+#ifdef JAVASCRIPT_EVAL_ENABLED
+	if (p_feature == "web") {
+		return true;
+	}
+#endif
+#ifndef NO_THREADS
+	if (p_feature == "threads") {
+		return true;
+	}
+#endif
+#if WASM_GDNATIVE
+	if (p_feature == "wasm32") {
+		return true;
+	}
+#endif
+
+	return false;
+}
+
+String OS_Web::get_executable_path() const {
+	return OS::get_executable_path();
+}
+
+Error OS_Web::shell_open(String p_uri) {
+	// Open URI in a new tab, browser will deal with it by protocol.
+	godot_js_os_shell_open(p_uri.utf8().get_data());
+	return OK;
+}
+
+String OS_Web::get_name() const {
+	return "Web";
+}
+
+void OS_Web::vibrate_handheld(int p_duration_ms) {
+	godot_js_input_vibrate_handheld(p_duration_ms);
+}
+
+String OS_Web::get_user_data_dir() const {
+	return "/userfs";
+}
+
+String OS_Web::get_cache_path() const {
+	return "/home/web_user/.cache";
+}
+
+String OS_Web::get_config_path() const {
+	return "/home/web_user/.config";
+}
+
+String OS_Web::get_data_path() const {
+	return "/home/web_user/.local/share";
+}
+
+void OS_Web::file_access_close_callback(const String &p_file, int p_flags) {
+	OS_Web *os = OS_Web::get_singleton();
+	if (!(os->is_userfs_persistent() && (p_flags & FileAccess::WRITE))) {
+		return; // FS persistence is not working or we are not writing.
+	}
+	bool is_file_persistent = p_file.begins_with("/userfs");
+#ifdef TOOLS_ENABLED
+	// Hack for editor persistence (can we track).
+	is_file_persistent = is_file_persistent || p_file.begins_with("/home/web_user/");
+#endif
+	if (is_file_persistent) {
+		os->idb_needs_sync = true;
+	}
+}
+
+void OS_Web::update_pwa_state_callback() {
+	if (OS_Web::get_singleton()) {
+		OS_Web::get_singleton()->pwa_is_waiting = true;
+	}
+	if (JavaScript::get_singleton()) {
+		JavaScript::get_singleton()->emit_signal("pwa_update_available");
+	}
+}
+
+Error OS_Web::pwa_update() {
+	return godot_js_pwa_update() ? FAILED : OK;
+}
+
+bool OS_Web::is_userfs_persistent() const {
+	return idb_available;
+}
+
+Error OS_Web::open_dynamic_library(const String p_path, void *&p_library_handle, bool p_also_set_library_path, String *r_resolved_path) {
+	String path = p_path.get_file();
+	p_library_handle = dlopen(path.utf8().get_data(), RTLD_NOW);
+	ERR_FAIL_COND_V_MSG(!p_library_handle, ERR_CANT_OPEN, "Can't open dynamic library: " + p_path + ". Error: " + dlerror());
+
+	if (r_resolved_path != nullptr) {
+		*r_resolved_path = path;
+	}
+
+	return OK;
+}
+
+OS_Web *OS_Web::get_singleton() {
+	return static_cast<OS_Web *>(OS::get_singleton());
+}
+
+void OS_Web::initialize_joypads() {
+}
+
+OS_Web::OS_Web() {
+	char locale_ptr[16];
+	godot_js_config_locale_get(locale_ptr, 16);
+	setenv("LANG", locale_ptr, true);
+
+	godot_js_pwa_cb(&OS_Web::update_pwa_state_callback);
+
+	if (AudioDriverWeb::is_available()) {
+#ifdef NO_THREADS
+		audio_drivers.push_back(memnew(AudioDriverScriptProcessor));
+#endif
+		audio_drivers.push_back(memnew(AudioDriverWorklet));
+	}
+	for (int i = 0; i < audio_drivers.size(); i++) {
+		AudioDriverManager::add_driver(audio_drivers[i]);
+	}
+
+	idb_available = godot_js_os_fs_is_persistent();
+
+	Vector<Logger *> loggers;
+	loggers.push_back(memnew(StdLogger));
+	_set_logger(memnew(CompositeLogger(loggers)));
+
+	FileAccessUnix::close_notification_func = file_access_close_callback;
+}
diff --git a/platform/web/os_web.h b/platform/web/os_web.h
new file mode 100644
index 0000000000..64f3a4d133
--- /dev/null
+++ b/platform/web/os_web.h
@@ -0,0 +1,111 @@
+/*************************************************************************/
+/*  os_web.h                                                             */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#ifndef OS_WEB_H
+#define OS_WEB_H
+
+#include "audio_driver_web.h"
+#include "core/input/input.h"
+#include "drivers/unix/os_unix.h"
+#include "servers/audio_server.h"
+
+#include <emscripten/html5.h>
+
+class OS_Web : public OS_Unix {
+	MainLoop *main_loop = nullptr;
+	List<AudioDriverWeb *> audio_drivers;
+
+	bool idb_is_syncing = false;
+	bool idb_available = false;
+	bool idb_needs_sync = false;
+	bool pwa_is_waiting = false;
+
+	static void main_loop_callback();
+
+	static void file_access_close_callback(const String &p_file, int p_flags);
+	static void fs_sync_callback();
+	static void update_pwa_state_callback();
+
+protected:
+	void initialize() override;
+
+	void set_main_loop(MainLoop *p_main_loop) override;
+	void delete_main_loop() override;
+
+	void finalize() override;
+
+	bool _check_internal_feature_support(const String &p_feature) override;
+
+public:
+	// Override return type to make writing static callbacks less tedious.
+	static OS_Web *get_singleton();
+
+	bool pwa_needs_update() const { return pwa_is_waiting; }
+	Error pwa_update();
+
+	void initialize_joypads() override;
+
+	MainLoop *get_main_loop() const override;
+	bool main_loop_iterate();
+
+	Error execute(const String &p_path, const List<String> &p_arguments, String *r_pipe = nullptr, int *r_exitcode = nullptr, bool read_stderr = false, Mutex *p_pipe_mutex = nullptr, bool p_open_console = false) override;
+	Error create_process(const String &p_path, const List<String> &p_arguments, ProcessID *r_child_id = nullptr, bool p_open_console = false) override;
+	Error kill(const ProcessID &p_pid) override;
+	int get_process_id() const override;
+	bool is_process_running(const ProcessID &p_pid) const override;
+	int get_processor_count() const override;
+	int get_default_thread_pool_size() const override { return 1; }
+
+	String get_executable_path() const override;
+	Error shell_open(String p_uri) override;
+	String get_name() const override;
+	// Override default OS implementation which would block the main thread with delay_usec.
+	// Implemented in web_main.cpp loop callback instead.
+	void add_frame_delay(bool p_can_draw) override {}
+
+	void vibrate_handheld(int p_duration_ms) override;
+
+	String get_cache_path() const override;
+	String get_config_path() const override;
+	String get_data_path() const override;
+	String get_user_data_dir() const override;
+
+	bool is_userfs_persistent() const override;
+
+	void alert(const String &p_alert, const String &p_title = "ALERT!") override;
+
+	Error open_dynamic_library(const String p_path, void *&p_library_handle, bool p_also_set_library_path = false, String *r_resolved_path = nullptr) override;
+
+	void resume_audio();
+
+	OS_Web();
+};
+
+#endif // OS_WEB_H
diff --git a/platform/web/package-lock.json b/platform/web/package-lock.json
new file mode 100644
index 0000000000..f8c67b206f
--- /dev/null
+++ b/platform/web/package-lock.json
@@ -0,0 +1,5391 @@
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+      "dev": true,
+      "dependencies": {
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+      }
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+      "dev": true,
+      "bin": {
+        "parser": "bin/babel-parser.js"
+      },
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+    },
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diff --git a/platform/web/package.json b/platform/web/package.json
new file mode 100644
index 0000000000..a57205415a
--- /dev/null
+++ b/platform/web/package.json
@@ -0,0 +1,29 @@
+{
+  "name": "godot",
+  "private": true,
+  "version": "1.0.0",
+  "description": "Development and linting setup for Godot's Web platform code",
+  "scripts": {
+    "docs": "jsdoc --template js/jsdoc2rst/ js/engine/engine.js js/engine/config.js --destination ''",
+    "lint": "npm run lint:engine && npm run lint:libs && npm run lint:modules && npm run lint:tools",
+    "lint:engine": "eslint \"js/engine/*.js\" --no-eslintrc -c .eslintrc.engine.js",
+    "lint:libs": "eslint \"js/libs/*.js\" --no-eslintrc -c .eslintrc.libs.js",
+    "lint:modules": "eslint \"../../modules/**/*.js\" --no-eslintrc -c .eslintrc.libs.js",
+    "lint:tools": "eslint \"js/jsdoc2rst/**/*.js\" --no-eslintrc -c .eslintrc.engine.js",
+    "format": "npm run format:engine && npm run format:libs && npm run format:modules && npm run format:tools",
+    "format:engine": "npm run lint:engine -- --fix",
+    "format:libs": "npm run lint:libs -- --fix",
+    "format:modules": "npm run lint:modules -- --fix",
+    "format:tools": "npm run lint:tools -- --fix",
+    "serve": "serve"
+  },
+  "author": "Godot Engine contributors",
+  "license": "MIT",
+  "devDependencies": {
+    "eslint": "^7.28.0",
+    "eslint-config-airbnb-base": "^14.2.1",
+    "eslint-plugin-import": "^2.23.4",
+    "jsdoc": "^3.6.7",
+    "serve": "^13.0.2"
+  }
+}
diff --git a/platform/web/platform_config.h b/platform/web/platform_config.h
new file mode 100644
index 0000000000..5e48992af8
--- /dev/null
+++ b/platform/web/platform_config.h
@@ -0,0 +1,33 @@
+/*************************************************************************/
+/*  platform_config.h                                                    */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include <alloca.h>
+
+#define OPENGL_INCLUDE_H "platform/web/godot_webgl2.h"
diff --git a/platform/web/run_icon.png b/platform/web/run_icon.png
new file mode 100644
index 0000000000..574abb0150
--- /dev/null
+++ b/platform/web/run_icon.png
diff --git a/platform/web/serve.json b/platform/web/serve.json
new file mode 100644
index 0000000000..f2ef24751f
--- /dev/null
+++ b/platform/web/serve.json
@@ -0,0 +1,21 @@
+{
+    "public": "../../bin",
+    "headers": [{
+        "source": "**/*",
+        "headers": [
+            {
+                "key": "Cross-Origin-Embedder-Policy",
+                "value": "require-corp"
+            }, {
+                "key": "Cross-Origin-Opener-Policy",
+                "value": "same-origin"
+            }, {
+                "key":  "Access-Control-Allow-Origin",
+                "value": "*"
+            }, {
+                "key": "Cache-Control",
+                "value": "no-store, max-age=0"
+            }
+        ]
+    }]
+}
diff --git a/platform/web/web_main.cpp b/platform/web/web_main.cpp
new file mode 100644
index 0000000000..0f4411727a
--- /dev/null
+++ b/platform/web/web_main.cpp
@@ -0,0 +1,110 @@
+/*************************************************************************/
+/*  web_main.cpp                                                         */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+#include "core/config/engine.h"
+#include "core/io/resource_loader.h"
+#include "main/main.h"
+#include "platform/web/display_server_web.h"
+#include "platform/web/os_web.h"
+
+#include <emscripten/emscripten.h>
+#include <stdlib.h>
+
+#include "godot_js.h"
+
+static OS_Web *os = nullptr;
+static uint64_t target_ticks = 0;
+
+void exit_callback() {
+	emscripten_cancel_main_loop(); // After this, we can exit!
+	Main::cleanup();
+	int exit_code = OS_Web::get_singleton()->get_exit_code();
+	memdelete(os);
+	os = nullptr;
+	emscripten_force_exit(exit_code); // No matter that we call cancel_main_loop, regular "exit" will not work, forcing.
+}
+
+void cleanup_after_sync() {
+	emscripten_set_main_loop(exit_callback, -1, false);
+}
+
+void main_loop_callback() {
+	uint64_t current_ticks = os->get_ticks_usec();
+
+	bool force_draw = DisplayServerWeb::get_singleton()->check_size_force_redraw();
+	if (force_draw) {
+		Main::force_redraw();
+	} else if (current_ticks < target_ticks) {
+		return; // Skip frame.
+	}
+
+	int target_fps = Engine::get_singleton()->get_target_fps();
+	if (target_fps > 0) {
+		if (current_ticks - target_ticks > 1000000) {
+			// When the window loses focus, we stop getting updates and accumulate delay.
+			// For this reason, if the difference is too big, we reset target ticks to the current ticks.
+			target_ticks = current_ticks;
+		}
+		target_ticks += (uint64_t)(1000000 / target_fps);
+	}
+	if (os->main_loop_iterate()) {
+		emscripten_cancel_main_loop(); // Cancel current loop and wait for cleanup_after_sync.
+		godot_js_os_finish_async(cleanup_after_sync);
+	}
+}
+
+/// When calling main, it is assumed FS is setup and synced.
+extern EMSCRIPTEN_KEEPALIVE int godot_web_main(int argc, char *argv[]) {
+	os = new OS_Web();
+
+	// We must override main when testing is enabled
+	TEST_MAIN_OVERRIDE
+
+	Main::setup(argv[0], argc - 1, &argv[1]);
+
+	// Ease up compatibility.
+	ResourceLoader::set_abort_on_missing_resources(false);
+
+	Main::start();
+	os->get_main_loop()->initialize();
+#ifdef TOOLS_ENABLED
+	if (Engine::get_singleton()->is_project_manager_hint() && FileAccess::exists("/tmp/preload.zip")) {
+		PackedStringArray ps;
+		ps.push_back("/tmp/preload.zip");
+		os->get_main_loop()->emit_signal(SNAME("files_dropped"), ps, -1);
+	}
+#endif
+	emscripten_set_main_loop(main_loop_callback, -1, false);
+	// Immediately run the first iteration.
+	// We are inside an animation frame, we want to immediately draw on the newly setup canvas.
+	main_loop_callback();
+
+	return 0;
+}
diff --git a/platform/web/web_runtime.cpp b/platform/web/web_runtime.cpp
new file mode 100644
index 0000000000..93a1745a83
--- /dev/null
+++ b/platform/web/web_runtime.cpp
@@ -0,0 +1,35 @@
+/*************************************************************************/
+/*  web_runtime.cpp                                                      */
+/*************************************************************************/
+/*                       This file is part of:                           */
+/*                           GODOT ENGINE                                */
+/*                      https://godotengine.org                          */
+/*************************************************************************/
+/* Copyright (c) 2007-2022 Juan Linietsky, Ariel Manzur.                 */
+/* Copyright (c) 2014-2022 Godot Engine contributors (cf. AUTHORS.md).   */
+/*                                                                       */
+/* Permission is hereby granted, free of charge, to any person obtaining */
+/* a copy of this software and associated documentation files (the       */
+/* "Software"), to deal in the Software without restriction, including   */
+/* without limitation the rights to use, copy, modify, merge, publish,   */
+/* distribute, sublicense, and/or sell copies of the Software, and to    */
+/* permit persons to whom the Software is furnished to do so, subject to */
+/* the following conditions:                                             */
+/*                                                                       */
+/* The above copyright notice and this permission notice shall be        */
+/* included in all copies or substantial portions of the Software.       */
+/*                                                                       */
+/* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,       */
+/* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF    */
+/* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.*/
+/* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY  */
+/* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,  */
+/* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE     */
+/* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.                */
+/*************************************************************************/
+
+extern int godot_web_main(int argc, char *argv[]);
+
+int main(int argc, char *argv[]) {
+	return godot_web_main(argc, argv);
+}