USDZ to GLB converter
Updated September 2026
What is a USDZ to GLB converter?
Apple AR zip in. One web file out.
The main exit from USDZ on this site. The converter reads the USDA stage in the zip and writes GLB for web and AR on non-Apple surfaces. Empty zips and loose USDA files are refused. Keep the USDZ for Quick Look.
How to convert USDZ to GLB
Source USDZ, target GLB, drop the .usdz, download .glb.
1
Drop a USDZ file
Source is USDZ. The File API reads it in this tab. Nothing is posted. Keep it under 80 MB.
2
Write GLB
The USDZ stage is packed as GLB.
3
Take the file to the next tool
Open the GLB viewer. Keep the USDZ for Quick Look.
USDZ versus GLB on this route
This page is only USDZ → GLB. Other pairs have their own keep and lose notes so they do not repeat this conversion.
| On this conversion | What happens |
|---|---|
| Keeps | Mesh and materials the USDZ loader attached. |
| Drops | Quick Look packaging. You gain a web binary. |
| Next step | GLB viewer or a web engine. Keep the USDZ for iPhone AR. |
| Attribute | Result on the reference scene |
|---|---|
| Separate objects | Kept as 2 |
| UV coordinates | Kept |
| Vertex colour | Kept |
| Material names | Kept |
| Vertices on the reference scene | 48 of 48 |
| Mesh | Source | GLB | Change | Vertices written |
|---|---|---|---|---|
| mug.glb | 880 KB | 1,173 KB | 1.3x | 25,000 |
| lion.glb | 8,768 KB | 11,690 KB | 1.3x | 249,369 |
USDZ as the source: Materials and textures stay when the source has them. Measured 2026-09-13 by running this converter’s own loaders and exporters headlessly. How every format was measured.
USDZ to GLB stays in this tab
USDZ is parsed with the File API. GLB is written in memory. Quick Look packaging. You gain a web binary. That is a format rule, not an upload. Files over 80 MB are refused because RAM is the limit.
USDZ to GLB questions
What is a USDZ to GLB converter?
The main exit from USDZ on this site. The converter reads the USDA stage in the zip and writes GLB for web and AR on non-Apple surfaces. Empty zips and loose USDA files are refused. Keep the USDZ for Quick Look.
How do I convert USDZ to GLB online?
Source USDZ, target GLB, drop the .usdz, download .glb. No Blender and no account.
When should I convert USDZ to GLB?
When the next tool is the web, a game engine, or this site’s viewer. Keep USDZ for Files and Messages on iOS.
Why did my USDZ fail to convert?
The zip needs an USDA stage. Loose .usda/.usdc files are not opened. Empty or non-zip bytes are refused.
Are my 3D files uploaded?
No. USDZ is parsed here and GLB is written in memory. There is no convert API.
Can I view USDZ without converting?
Yes. Open the USDZ viewer if you only need to orbit. Convert when the next tool actually wants GLB.
Convert USDZ to GLB, or inspect first
GLB viewer or a web engine. Keep the USDZ for iPhone AR.
