Flutter 3D Model Viewer

https://pub.dev/packages/model_viewer – Fork from a package that is discontinued, and add the web support for it.

This is a Flutter widget for rendering interactive 3D models in the glTF and GLB formats.

The widget embeds Google’s web component in a WebView.


  1. Android

  2. iOS (AR View may not avaliable on iOS 16+)

  3. Web, with a recent system browser version.


We use the Google APP, com.google.android.googlequicksearchbox to display interactive 3D models on Android. The model displays in ‘ar_preferred’ mode by default, Scene Viewer launches in AR native mode as the entry mode. If Google Play Services for AR (ARCore, com.google.ar.core) isn’t present, Scene Viewer gracefully falls back to 3D mode as the entry mode.



dependencies: model_viewer_plus: ^(newest from https://pub.dev/packages/model_viewer_plus)

AndroidManifest.xml (Android 9+ only)

To use this widget on Android 9+ devices, your app must be permitted to make an HTTP connection to http://localhost:XXXXX. Android 9 (API level 28) changed the default for android:usesCleartextTraffic from true to false, so you will need to configure your app’s android/app/src/main/AndroidManifest.xml as follows:

<application android:name="io.flutter.app.FlutterApplication" android:label="model_viewer_example" android:icon="@mipmap/ic_launcher"> android:icon="@mipmap/ic_launcher" android:usesCleartextTraffic="true"> <activity android:name=".MainActivity" android:launchMode="singleTop"

This does not affect Android 8 and earlier. See #7 for more information.

app/build.gradle (Android only)

Change minSdkVersion to 19.

defaultConfig { // TODO: Specify your own unique Application ID (https://developer.android.com/studio/build/application-id.html). applicationId "com.example.lab_rat" minSdkVersion 19 targetSdkVersion flutter.targetSdkVersion versionCode flutterVersionCode.toInteger() versionName flutterVersionName }

Info.plist (iOS only)

To use this widget on iOS, you need to opt-in to the embedded views preview by adding a boolean property to your app’s ios/Runner/Info.plist file, with the key io.flutter.embedded_views_preview and the value YES:

<key>io.flutter.embedded_views_preview</key> <true/>

web/index.html (Web only)

Modify the tag of your web/index.html to load the JavaScript, like so:

<head> <script type="module" src="./assets/packages/model_viewer_plus/assets/model-viewer.min.js" defer></script> </head>

./assets/packages/model_viewer_plus/assets/model-viewer.min.js will use the default js file which is included in this package’s asset. The official site uses unpkg, by using https://unpkg.com/@google/model-viewer/dist/model-viewer.min.js, you are using the latest version of . You may replace the value of src attribute with another CDN mirror’s URL. But please notice that our model-viewer-plus maybe not able to keep up with the ‘s latest version.

According to #44, the render quality maybe low on some mobile devices. Please consider adding to the of your web/index.html.


  1. Renders glTF and GLB models. (Also, USDZ models on iOS 12+.)

  2. Supports animated models, with a configurable auto-play setting.

  3. Optionally supports launching the model into an AR viewer.

  4. Optionally auto-rotates the model, with a configurable delay.

  5. Supports a configurable background color for the widget.


Importing the library

import 'package:model_viewer_plus/model_viewer_plus.dart';

Creating a ModelViewer widget

class MyApp extends StatelessWidget { @override Widget build(BuildContext context) { return MaterialApp( home: Scaffold( appBar: AppBar(title: Text("Model Viewer")), body: ModelViewer( src: 'https://modelviewer.dev/shared-assets/models/Astronaut.glb', alt: "A 3D model of an astronaut", ar: true, autoRotate: true, cameraControls: true, ), ), ); } }

Loading a bundled Flutter asset

class MyApp extends StatelessWidget { // ... src: 'assets/MyModel.glb', // ... }

Loading a model from the file system

This is not avaliable on Web.

class MyApp extends StatelessWidget { // ... src: 'file:///path/to/MyModel.glb', // ... }

Loading a model from the web

class MyApp extends StatelessWidget { // ... src: 'https://modelviewer.dev/shared-assets/models/Astronaut.glb', // ... }

Note that due to browsers’ CORS security restrictions, the model file must be served with a Access-Control-Allow-Origin: * HTTP header.


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