# GLB to USDZ Converter

> Show GLB models in AR on iPhone and iPad: GLB to USDZ with materials and textures, at real size and sitting on the floor.

Page: https://printpal.io/convert/glb-to-usdz
Updated: 2026-11-12
Use it: open https://printpal.io/convert/glb-to-usdz in a browser and drop a file. Free, no account, files are processed locally and never uploaded.

Android shows GLB in AR directly; iPhone and iPad want USDZ. The converter writes a USDZ in metres with each mesh's PBR material and textures, recentered so the model sits on the floor when AR Quick Look places it.

Animations are not carried. Tap the .usdz on an iPhone, or link to it from a web page, to place the model in your room.

## How to convert GLB to USDZ

1. **Drop your GLB files.** Drop .glb files, including Draco, Meshopt and KTX2 compressed ones.
2. **Check the preview.** The model appears at the size and orientation it will have. Fix the file units, up axis or size under Size, units and orientation if needed.
3. **Choose USDZ options.** Written in metres, Y up, sitting on the floor and centered, which is what AR Quick Look expects.
4. **Convert and download.** One file downloads straight away. A batch gives a download per file and one .zip of all of them.

## What carries over

| | Result |
|---|---|
| Geometry | Every triangle is kept at full precision. |
| Color | Kept: materials and textures, as PBR materials for AR Quick Look. |
| Units | Both are in metres, so sizes are unchanged. |
| Orientation | Both are Y up, so it stays the right way up. |
| Objects | Each part stays a separate object or mesh. |
| Animation | Dropped: the model is written in its rest pose. |

## GLB at a glance (glTF 2.0 binary)

glTF 2.0 is the Khronos Group's "JPEG of 3D", and GLB is its single-file binary form. It is what AI 3D generators, Sketchfab downloads and web apps hand out, and it is the only common format whose units (metres) and axes (Y up) are fixed by the spec.

- **Stores:** Meshes, PBR materials, textures, animation and scenes in one binary file
- **Color:** Full: textures, base colors and vertex colors
- **Units:** Metres, fixed by the glTF spec
- **Up axis:** Y, fixed by the spec
- **File size:** Compact; Draco or Meshopt compression shrinks meshes 5 to 10 times
- **Opens in:** Web viewers, Blender, Windows, Android Scene Viewer, Godot, Unity and Unreal importers

## USDZ at a glance (Universal Scene Description, zipped)

USDZ packages Pixar's Universal Scene Description for Apple's AR Quick Look: tap a .usdz on an iPhone and the model appears in your room at real size.

- **Stores:** A Pixar USD scene and its textures in an uncompressed zip
- **Color:** PBR materials and textures
- **Units:** Metres in this export
- **Up axis:** Y
- **Use:** AR Quick Look on iPhone, iPad, Mac and Vision Pro
- **Opens in:** Safari and Files on Apple devices, Reality Composer, Blender, Omniverse

## Tips

- **Real size** AR shows the model at its size in metres; set a height if the GLB isn't built to scale.
- **Web AR** Serve the USDZ next to the GLB with `<model-viewer ios-src>` for one AR button on every phone.
- **Textures** Large textures are resized to 1024 px for Quick Look.

## FAQ

### How do I view a USDZ on iPhone?

Open it from Files, Messages, Mail or a Safari link and tap the AR button.

### Are animations kept?

No, the USDZ is static.

### Will it work on Vision Pro and Mac?

Yes, USDZ opens in Quick Look on visionOS and macOS too.

### Is the converter free? Are there limits?

Free, with no sign-up, watermark or file count limit. Batches and files of a few hundred MB work on most laptops; the only limit is your device's memory.

### Are my files uploaded?

No. Files are read and written by JavaScript and WebAssembly in your browser and never sent to PrintPal. The STEP and IGES reader is the only extra download, once, from a public CDN.

## Related

- [GLB to STL Converter](https://printpal.io/convert/glb-to-stl)
- [GLB to OBJ Converter](https://printpal.io/convert/glb-to-obj)
- [GLB to glTF Converter](https://printpal.io/convert/glb-to-gltf)
- [GLB to 3MF Converter](https://printpal.io/convert/glb-to-3mf)
- [STL to GLB Converter](https://printpal.io/convert/stl-to-glb)
- [OBJ to GLB Converter](https://printpal.io/convert/obj-to-glb)
- [glTF to GLB Converter](https://printpal.io/convert/gltf-to-glb)
- [FBX to GLB Converter](https://printpal.io/convert/fbx-to-glb)
- [3D model viewer](https://printpal.io/tools/3d-model-viewer)
- [3D model converter](https://printpal.io/tools/3d-model-converter)
- [Mesh Repair](https://printpal.io/tools/mesh-repair)
- PrintPal for LLMs: https://printpal.io/llms.txt