Loading converter…
Updated September 2026
Web scene in. Apple AR zip out.
iPhone and iPad open USDZ in Files, Messages, and Safari. This page reads a GLB and writes that zip in the tab. Empty geometry is refused. Keep GLB for the web; use this route when the next step is Quick Look.
Source GLB, target USDZ, drop the .glb, download a .usdz.
1
Source is GLB. The File API reads it in this tab. Nothing is posted. Keep it under 80 MB.
2
The in-memory GLB scene is written as a USDZ zip of USDA.
3
Open the USDZ on an iPhone or iPad. Keep the GLB for the web.
This page is only GLB → USDZ. Other pairs have their own keep and lose notes so they do not repeat this conversion.
| On this conversion | What happens |
|---|---|
| Keeps | Mesh and PBR the USDZ writer can store. |
| Drops | The single-file web pack. You now have a Quick Look zip. |
| Next step | AirDrop or iMessage the USDZ. Keep the GLB for the web viewer. |
| Attribute | Result on the reference scene |
|---|---|
| Separate objects | Kept as 2 |
| UV coordinates | Kept |
| Vertex colour | Lost |
| Material names | Lost |
| Vertices on the reference scene | 72 of 48 |
| Mesh | Source | USDZ | Change | Vertices written |
|---|---|---|---|---|
| mug.glb | 880 KB | 2,927 KB | 3.3x | 150,000 |
| lion.glb | 8,768 KB | 30,487 KB | 3.5x | 1,496,202 |
GLB 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.
GLB is parsed with the File API. USDZ is written in memory. The single-file web pack. You now have a Quick Look zip. That is a format rule, not an upload. Files over 80 MB are refused because RAM is the limit.
iPhone and iPad open USDZ in Files, Messages, and Safari. This page reads a GLB and writes that zip in the tab. Empty geometry is refused. Keep GLB for the web; use this route when the next step is Quick Look.
Source GLB, target USDZ, drop the .glb, download a .usdz. No Blender and no account.
When the destination is Apple Quick Look. Keep GLB for the web, a game engine, or this site’s viewer.
PBR that the USDZ writer stores can survive. Clips and extras the USDA stage does not carry are dropped.
No. GLB is parsed here and USDZ is written in memory. There is no convert API.
Yes. Open the GLB viewer if you only need to orbit. Convert when the next tool actually wants USDZ.
AirDrop or iMessage the USDZ. Keep the GLB for the web viewer.
