Free Online GLB to USDZ Converter
Convert GLB files to USDZ for Apple AR Quick Look. Bridge web 3D and Apple AR. Free, fast, no sign-up.
How to Convert GLB to USDZ
Upload Your GLB File
Drag and drop your .glb file onto the converter above. The tool parses the GLB binary and extracts geometry and materials.
Automatic Conversion
The converter transforms your GLB data into USDZ format, suitable for Apple AR Quick Look, iOS apps, and macOS.
Download Your USDZ
Once complete, download your USDZ file and use it in AR Quick Look, Xcode, Reality Composer, or Apple Vision Pro.
Why Choose Our Converter
Free & No Sign-Up
Convert GLB to USDZ for free with no registration, no watermarks, and no hidden costs.
AR Quick Look Ready
USDZ is Apple's AR format. The output works directly with AR Quick Look on iPhone, iPad, and macOS Safari.
PBR Material Transfer
GLB PBR materials are transferred to USDZ format for display in Apple's rendering pipeline.
Cross-Platform Input
GLB is web-native; USDZ is Apple-native. Convert between them to cover both web and Apple AR ecosystems.
2 Ways to Convert GLB to USDZ
Pick based on whether you need quick conversion or Apple's official toolchain.
Online GLB to USDZ Converter (This Tool)
Best for: quick, no-install conversion
- Drag and drop your .glb file.
- Wait for the automatic conversion.
- Download the USDZ file.
Pros: Free, no software install, works on any device, produces AR-ready USDZ.
Cons: Requires internet. Some PBR material properties may vary in Apple's renderer.
Apple Reality Converter (macOS)
Best for: Apple ecosystem workflow
- Download Reality Converter from the Mac App Store.
- Drag your .glb file into Reality Converter.
- Preview materials and adjust.
- Export as USDZ.
Pros: Official Apple tool. Full AR preview and material editing on Mac.
Cons: Requires a Mac. Only available on macOS.
Quick Checks Before You Convert
GLB → USDZ bridges web and Apple AR. Review these items for a smooth conversion.
Texture Format
USDZ prefers PNG and JPEG textures. GLB may embed textures in other formats. Check that textures are compatible with Apple's renderer.
Scale for AR
GLB uses meters by default. USDZ also uses meters. Verify the model scale so it appears at the correct physical size in AR Quick Look.
Polygon Count
AR on iPhone/iPad is performance-sensitive. If your GLB has millions of polygons, consider decimating for smooth AR performance.
Animation Support
GLB supports animations. USDZ also supports animations. Verify that animated GLB models transfer correctly for AR experiences.
GLB vs USDZ Format Comparison
| Feature | GLB | USDZ |
|---|---|---|
| Full name | glTF Binary | Universal Scene Description (Zip) |
| Maintained by | Khronos Group | Pixar / Apple |
| Structure | Binary container | Zip archive |
| AR Quick Look | No | Yes (native) |
| PBR materials | Yes (metallic-roughness) | Yes |
| Animations | Yes | Yes |
| Web native | Yes (Three.js, WebGL) | No |
| Apple native | No | Yes (iOS, macOS, visionOS) |
| Primary use | Web 3D, AR/VR | Apple AR, Vision Pro |
| Android support | Yes | No (use GLB instead) |
Fixing Common Issues After Conversion
Typical errors after GLB → USDZ and how to resolve them.
USDZ doesn't appear in AR Quick Look
Ensure the USDZ file is served from an HTTPS URL. iOS Safari requires HTTPS for AR Quick Look. Also check that the file size is under 50MB.
Materials look different in iOS AR
GLB PBR materials may render differently in Apple's renderer. Use Reality Converter to adjust materials after conversion, or simplify PBR properties before uploading.
Model appears too large or too small in AR
GLB and USDZ both default to meters. If the model was authored in a different unit, adjust the scale in Reality Converter or Xcode before deployment.
USDZ won't open on Android
USDZ is Apple-only. For cross-platform web AR, use GLB with Google's <model-viewer> web component, which supports both Android and iOS.
What Is a GLB File?
GLB is the binary version of glTF (GL Transmission Format), maintained by the Khronos Group. It packages geometry, PBR materials, textures, and animations into a single compact binary file.
Often called the "JPEG of 3D," GLB is the standard format for web-based 3D delivery, loading natively in Three.js, Babylon.js, Google Model Viewer, and WebXR.
GLB vs USDZ: why convert?
GLB is for web 3D; USDZ is for Apple AR. If you need to display 3D models in AR Quick Look on iPhone, iPad, or Vision Pro, you need USDZ. Converting GLB to USDZ lets you bridge the web and Apple AR ecosystems from a single source model.
Last updated: August 2026. Format details reference the glTF specification and the USD/USDZ format overview.
Frequently Asked Questions
How do I convert GLB to USDZ?
Upload your .glb file using the converter above. The tool converts it to USDZ format automatically. Download the USDZ file when conversion is complete.
Is this GLB to USDZ converter free?
Yes, completely free. No registration, no watermarks, no hidden costs.
What is the difference between GLB and USDZ?
GLB is a web-optimized binary 3D format maintained by the Khronos Group. USDZ is Apple/Pixar's AR format for AR Quick Look on iOS and macOS. GLB is for web 3D; USDZ is for Apple AR.
How do I convert GLB to USDZ on Mac?
Use our online converter in any browser on macOS. For advanced material editing, use Apple's Reality Converter (free from Mac App Store) to import GLB and export USDZ.
Can I convert GLB to USDZ on Windows?
Yes. Our online converter works on Windows browsers. For desktop conversion, use Pixar's USD tools or Blender with the USD addon.
Does converting GLB to USDZ preserve materials?
GLB PBR materials are transferred to USDZ format. Apple's renderer supports PBR materials, so most properties transfer correctly. Some advanced properties may need adjustment in Reality Converter.
Does GLB to USDZ preserve animations?
Both GLB and USDZ support animations. Skeletal and morph target animations should transfer during conversion. Verify in Reality Converter or Xcode after conversion.
Why convert GLB to USDZ?
GLB is for web 3D (Three.js, Babylon.js). USDZ is for Apple AR (AR Quick Look, Vision Pro). If you need to display 3D models in augmented reality on iPhone or iPad, you need USDZ. Converting GLB to USDZ bridges the web and Apple AR ecosystems.
Can I use USDZ on Android?
USDZ is not natively supported on Android. For cross-platform web AR, use GLB with Google's <model-viewer> which supports both Android and iOS via automatic format negotiation.
What is the maximum file size for AR Quick Look?
Apple recommends USDZ files under 50MB for reliable AR Quick Look loading. For larger models, decimate the mesh and compress textures before conversion.
Does USDZ work in Unity?
Unity supports USDZ via the USD package. For game development, FBX is more commonly used, but USD/USDZ support is growing in Unity and Unreal Engine.
How do I preview USDZ files?
On iPhone/iPad: open in Safari, Files, or Messages for AR Quick Look. On Mac: open in Preview or Finder. On other platforms: use Pixar's USDView or online USDZ viewers.