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Updated September 2026
Apple AR zip in. Slicer mesh out.
Slicers want STL, not USDZ. This page writes binary STL from the USDA mesh. Color and PBR are discarded. Preview the hull, then slice. Repair is not included.
Source USDZ, target STL, orbit the hull, download binary STL.
1
Source is USDZ. The File API reads it in this tab. Nothing is posted. Keep it under 80 MB.
2
The mesh is written as binary STL.
3
Open in the slicer. Check units.
This page is only USDZ → STL. Other pairs have their own keep and lose notes so they do not repeat this conversion.
| On this conversion | What happens |
|---|---|
| Keeps | Triangle hull for a slicer. |
| Drops | Color, PBR, and Quick Look packaging. |
| Next step | Slice. Use the STL viewer if you only needed to glance at the hull. |
| Attribute | Result on the reference scene |
|---|---|
| Separate objects | Merged into 1 |
| UV coordinates | Lost |
| Vertex colour | Lost |
| Material names | Lost |
| Vertices on the reference scene | 72 of 48 |
| Mesh | Source | STL | Change | Vertices written |
|---|---|---|---|---|
| mug.glb | 880 KB | 2,441 KB | 2.8x | 150,000 |
| lion.glb | 8,768 KB | 24,352 KB | 2.8x | 1,496,202 |
USDZ as the source: Geometry only. Color and clips are dropped. Measured 2026-09-13 by running this converter’s own loaders and exporters headlessly. How every format was measured.
USDZ is parsed with the File API. STL is written in memory. Color, PBR, and Quick Look packaging. That is a format rule, not an upload. Files over 80 MB are refused because RAM is the limit.
Slicers want STL, not USDZ. This page writes binary STL from the USDA mesh. Color and PBR are discarded. Preview the hull, then slice. Repair is not included.
Source USDZ, target STL, orbit the hull, download binary STL. No Blender and no account.
Most consumer slicers still want STL. Convert USDZ to STL here, then open the STL in the slicer.
No. It writes the triangles it has. Repair holes in a mesh tool if the slicer complains.
No. USDZ is parsed here and STL is written in memory. There is no convert API.
Yes. Open the USDZ viewer if you only need to orbit. Convert when the next tool actually wants STL.
Slice. Use the STL viewer if you only needed to glance at the hull.
