diff --git a/editor/images/icon.png b/editor/images/icon.png
new file mode 100644
index 00000000000000..6bc3cce209703f
Binary files /dev/null and b/editor/images/icon.png differ
diff --git a/editor/images/icon.xcf b/editor/images/icon.xcf
new file mode 100644
index 00000000000000..5874e39fd347f3
Binary files /dev/null and b/editor/images/icon.xcf differ
diff --git a/editor/index.html b/editor/index.html
index 129313896d783e..637406c44aef06 100644
--- a/editor/index.html
+++ b/editor/index.html
@@ -6,10 +6,11 @@
 		<meta name="viewport" content="width=device-width, user-scalable=no, minimum-scale=1.0, maximum-scale=1.0">
 		<!-- Origin Trial Token, feature = WebXR Device API (For Chrome M69+), origin = https://threejs.org, expires = 2019-03-06 -->
 		<meta http-equiv="origin-trial" data-feature="WebXR Device API (For Chrome M69+)" data-expires="2019-03-06" content="AvDjbxYpoTgOL1PS0JEra7KFCehfTlKnXpU/ORSwNdCQ35cX70cTUkXOnQ26A5XJi3eXHSKpBPchdt5lbcxDuAIAAABTeyJvcmlnaW4iOiJodHRwczovL3RocmVlanMub3JnOjQ0MyIsImZlYXR1cmUiOiJXZWJYUkRldmljZU02OSIsImV4cGlyeSI6MTU1MTgzMDM5OX0=">
+		<link rel="manifest" href="manifest.json">
 	</head>
 	<body ontouchstart="">
-		<link href="css/main.css" rel="stylesheet" />
-		<link id="theme" href="css/light.css" rel="stylesheet" />
+		<link rel="stylesheet" href="css/main.css">
+		<link rel="stylesheet" id="theme" href="css/light.css">
 
 		<script src="../build/three.js"></script>
 		<script src="../examples/js/libs/system.min.js"></script>
@@ -86,6 +87,9 @@
 		<script src="js/libs/ui.js"></script>
 		<script src="js/libs/ui.three.js"></script>
 
+		<script src="js/libs/html2canvas.js"></script>
+		<script src="js/libs/three.html.js"></script>
+
 		<script src="js/libs/app.js"></script>
 		<script src="js/Player.js"></script>
 		<script src="js/Script.js"></script>
@@ -162,9 +166,6 @@
 		<script src="js/commands/SetMaterialMapCommand.js"></script>
 		<script src="js/commands/SetSceneCommand.js"></script>
 
-		<script src="js/libs/html2canvas.js"></script>
-		<script src="js/libs/three.html.js"></script>
-
 		<script>
 
 			window.URL = window.URL || window.webkitURL;
@@ -329,6 +330,20 @@
 
 			}
 
+			// ServiceWorker
+
+			if ( 'serviceWorker' in navigator ) {
+
+				try {
+
+					navigator.serviceWorker.register( 'sw.js' );
+
+				} catch ( error ) {
+
+				}
+
+			}
+
 			/*
 			window.addEventListener( 'message', function ( event ) {
 
diff --git a/editor/manifest.json b/editor/manifest.json
new file mode 100644
index 00000000000000..9717c104a8c1c6
--- /dev/null
+++ b/editor/manifest.json
@@ -0,0 +1,13 @@
+{
+  "short_name": "Editor",
+  "name": "Three.js Editor",
+  "icons": [
+    {
+      "src": "./images/icon.png",
+      "type": "image/png",
+      "sizes": "144x144"
+    }
+  ],
+  "start_url": ".",
+  "display": "standalone"
+}
diff --git a/editor/sw.js b/editor/sw.js
new file mode 100644
index 00000000000000..6023f9a006d6a5
--- /dev/null
+++ b/editor/sw.js
@@ -0,0 +1,197 @@
+// r102
+
+const staticAssets = [
+	'./',
+
+	'../build/three.js',
+	'../examples/js/libs/system.min.js',
+
+	'../examples/js/controls/EditorControls.js',
+	'../examples/js/controls/TransformControls.js',
+
+	'../examples/js/libs/jszip.min.js',
+	'../examples/js/libs/inflate.min.js',
+
+	'../examples/js/loaders/AMFLoader.js',
+	'../examples/js/loaders/AWDLoader.js',
+	'../examples/js/loaders/BabylonLoader.js',
+	'../examples/js/loaders/ColladaLoader.js',
+	'../examples/js/loaders/DRACOLoader.js',
+	'../examples/js/loaders/FBXLoader.js',
+	'../examples/js/loaders/GLTFLoader.js',
+	'../examples/js/loaders/deprecated/LegacyGLTFLoader.js',
+	'../examples/js/loaders/KMZLoader.js',
+	'../examples/js/loaders/MD2Loader.js',
+	'../examples/js/loaders/OBJLoader.js',
+	'../examples/js/loaders/MTLLoader.js',
+	'../examples/js/loaders/PlayCanvasLoader.js',
+	'../examples/js/loaders/PLYLoader.js',
+	'../examples/js/loaders/STLLoader.js',
+	'../examples/js/loaders/SVGLoader.js',
+	'../examples/js/loaders/TGALoader.js',
+	'../examples/js/loaders/TDSLoader.js',
+	'../examples/js/loaders/VRMLLoader.js',
+	'../examples/js/loaders/VTKLoader.js',
+	'../examples/js/loaders/ctm/lzma.js',
+	'../examples/js/loaders/ctm/ctm.js',
+	'../examples/js/loaders/ctm/CTMLoader.js',
+
+	'../examples/js/exporters/ColladaExporter.js',
+	'../examples/js/exporters/GLTFExporter.js',
+	'../examples/js/exporters/OBJExporter.js',
+	'../examples/js/exporters/STLExporter.js',
+
+	'../examples/js/renderers/Projector.js',
+	'../examples/js/renderers/RaytracingRenderer.js',
+	'../examples/js/renderers/SoftwareRenderer.js',
+	'../examples/js/renderers/SVGRenderer.js',
+
+	'./js/libs/codemirror/codemirror.css',
+	'./js/libs/codemirror/theme/monokai.css',
+
+	'./js/libs/codemirror/codemirror.js',
+	'./js/libs/codemirror/mode/javascript.js',
+	'./js/libs/codemirror/mode/glsl.js',
+
+	'./js/libs/esprima.js',
+	'./js/libs/jsonlint.js',
+	'./js/libs/glslprep.min.js',
+
+	'./js/libs/codemirror/addon/dialog.css',
+	'./js/libs/codemirror/addon/show-hint.css',
+	'./js/libs/codemirror/addon/tern.css',
+
+	'./js/libs/codemirror/addon/dialog.js',
+	'./js/libs/codemirror/addon/show-hint.js',
+	'./js/libs/codemirror/addon/tern.js',
+	'./js/libs/acorn/acorn.js',
+	'./js/libs/acorn/acorn_loose.js',
+	'./js/libs/acorn/walk.js',
+	'./js/libs/ternjs/polyfill.js',
+	'./js/libs/ternjs/signal.js',
+	'./js/libs/ternjs/tern.js',
+	'./js/libs/ternjs/def.js',
+	'./js/libs/ternjs/comment.js',
+	'./js/libs/ternjs/infer.js',
+	'./js/libs/ternjs/doc_comment.js',
+	'./js/libs/tern-threejs/threejs.js',
+
+	'./js/libs/signals.min.js',
+	'./js/libs/ui.js',
+	'./js/libs/ui.three.js',
+
+	'./js/libs/html2canvas.js',
+	'./js/libs/three.html.js',
+
+	'./js/libs/app.js',
+	'./js/Player.js',
+	'./js/Script.js',
+
+	'../examples/js/vr/WebVR.js',
+
+	//
+
+	'./css/main.css',
+	'./css/dark.css',
+	'./css/light.css',
+
+	'./js/Storage.js',
+
+	'./js/Editor.js',
+	'./js/Config.js',
+	'./js/History.js',
+	'./js/Loader.js',
+	'./js/Menubar.js',
+	'./js/Menubar.File.js',
+	'./js/Menubar.Edit.js',
+	'./js/Menubar.Add.js',
+	'./js/Menubar.Play.js',
+	// './js/Menubar.View.js',
+	'./js/Menubar.Examples.js',
+	'./js/Menubar.Help.js',
+	'./js/Menubar.Status.js',
+	'./js/Sidebar.js',
+	'./js/Sidebar.Scene.js',
+	'./js/Sidebar.Project.js',
+	'./js/Sidebar.Settings.js',
+	'./js/Sidebar.Settings.Shortcuts.js',
+	'./js/Sidebar.Settings.Viewport.js',
+	'./js/Sidebar.Properties.js',
+	'./js/Sidebar.Object.js',
+	'./js/Sidebar.Geometry.js',
+	'./js/Sidebar.Geometry.Geometry.js',
+	'./js/Sidebar.Geometry.BufferGeometry.js',
+	'./js/Sidebar.Geometry.Modifiers.js',
+	'./js/Sidebar.Geometry.BoxGeometry.js',
+	'./js/Sidebar.Geometry.CircleGeometry.js',
+	'./js/Sidebar.Geometry.CylinderGeometry.js',
+	'./js/Sidebar.Geometry.IcosahedronGeometry.js',
+	'./js/Sidebar.Geometry.PlaneGeometry.js',
+	'./js/Sidebar.Geometry.SphereGeometry.js',
+	'./js/Sidebar.Geometry.TorusGeometry.js',
+	'./js/Sidebar.Geometry.TorusKnotGeometry.js',
+	'./js/Sidebar.Geometry.TubeGeometry.js',
+	'../examples/js/geometries/TeapotBufferGeometry.js',
+	'./js/Sidebar.Geometry.TeapotBufferGeometry.js',
+	'./js/Sidebar.Geometry.LatheGeometry.js',
+	'./js/Sidebar.Material.js',
+	'./js/Sidebar.Animation.js',
+	'./js/Sidebar.Script.js',
+	'./js/Sidebar.History.js',
+	'./js/Strings.js',
+	'./js/Toolbar.js',
+	'./js/Viewport.js',
+	'./js/Viewport.Info.js',
+
+	'./js/Command.js',
+	'./js/commands/AddObjectCommand.js',
+	'./js/commands/RemoveObjectCommand.js',
+	'./js/commands/MoveObjectCommand.js',
+	'./js/commands/SetPositionCommand.js',
+	'./js/commands/SetRotationCommand.js',
+	'./js/commands/SetScaleCommand.js',
+	'./js/commands/SetValueCommand.js',
+	'./js/commands/SetUuidCommand.js',
+	'./js/commands/SetColorCommand.js',
+	'./js/commands/SetGeometryCommand.js',
+	'./js/commands/SetGeometryValueCommand.js',
+	'./js/commands/MultiCmdsCommand.js',
+	'./js/commands/AddScriptCommand.js',
+	'./js/commands/RemoveScriptCommand.js',
+	'./js/commands/SetScriptValueCommand.js',
+	'./js/commands/SetMaterialCommand.js',
+	'./js/commands/SetMaterialValueCommand.js',
+	'./js/commands/SetMaterialColorCommand.js',
+	'./js/commands/SetMaterialMapCommand.js',
+	'./js/commands/SetSceneCommand.js',
+
+	//
+
+	'./examples/arkanoid.app.json',
+	'./examples/camera.app.json',
+	'./examples/particles.app.json',
+	'./examples/pong.app.json',
+	'./examples/shaders.app.json'
+
+];
+
+self.addEventListener( 'install', async function ( event ) {
+
+	const cache = await caches.open( 'threejs-editor' );
+	cache.addAll( staticAssets );
+
+} );
+
+self.addEventListener( 'fetch', async function ( event ) {
+
+	const request = event.request;
+	event.respondWith( cacheFirst( request ) );
+
+} );
+
+async function cacheFirst( request ) {
+
+	const cachedResponse = await caches.match( request );
+	return cachedResponse || fetch( request );
+
+}
