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Updated August 2026
Shaded GLB in. Print triangles out.
Slicers want STL, not GLB. This page turns a Generate or DCC GLB into binary STL in the tab. Color, UVs, and clips are discarded because STL cannot hold them. Preview the hull here, then open the file in your slicer. This converter does not repair holes or thicken walls.
Set source to GLB and target to STL. Drop, orbit the hull, download binary STL.
1
Source is GLB. The File API reads it in this tab. Nothing is posted. Keep it under 80 MB.
2
The mesh is written as binary STL. That is triangles only.
3
Open the STL in the slicer. Check scale. Units are not magically converted.
This page is only GLB → 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, UVs, scene graph, and animation. |
| Next step | Slice in your usual tool. 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 |
GLB as the source: Geometry only. Color and clips are dropped. Measured 2026-08-27 by running this converter’s own loaders and exporters headlessly. How every format was measured.
GLB is parsed with the File API. STL is written in memory. Color, UVs, scene graph, and animation. That is a format rule, not an upload. Files over 80 MB are refused because RAM is the limit.
Slicers want STL, not GLB. This page turns a Generate or DCC GLB into binary STL in the tab. Color, UVs, and clips are discarded because STL cannot hold them. Preview the hull here, then open the file in your slicer. This converter does not repair holes or thicken walls.
Set source to GLB and target to STL. Drop, orbit the hull, download binary STL. No Blender and no account.
Most consumer slicers still want STL. Convert GLB to STL here, then open the STL in the slicer. Do not expect paint from the GLB to show on the print.
No. It writes the triangles it has. Repair holes and walls in a mesh tool if the slicer complains. This page is a format change, not a Boolean solid.
No. GLB is parsed here and STL 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 STL.
Slice in your usual tool. Use the STL viewer if you only needed to glance at the hull.