Kept
- Triangle geometry
- Shape and dimensions
- A single self-contained .glb file
Runs locally · no upload
Convert STL to GLB
Package an STL mesh as a GLB file that loads in three.js, Blender, Unity, WebXR and most online viewers. The triangles are kept; colours are added by your own material.
- Free preview
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- 5 credits per file
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Drop a 3D file hereSTL, OBJ, PLY, GLB, glTF, 3MF or STEP · up to 100 MB · processed locallyYour file never leaves this browser.
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What changes in the conversion
Dropped
- Nothing from the STL: it only contains triangles
- No texture is invented; the model appears with a neutral material
Common mistakes
- GLB has no physical unit either: set the scale in your engine.
- Very dense STLs produce large GLB files because no Draco compression is applied here.
- If the STL is not watertight, the GLB will look fine but still fail to print.
For 3D printing
- GLB is for viewing and web delivery, not for slicers; keep the STL for printing.
- Compress a GLB with the GLB compression tool if you need a smaller web asset.
Drop the file — it is read locally, never uploaded.
Choose the options, then convert or compress.
Download the result and open it in your slicer or 3D software.
Frequently asked questions
Is GLB better than STL for the web?+
Yes. GLB is a modern container with materials and textures, much lighter to load than STL for the same mesh.
Can I open the GLB in Blender?+
Yes, Blender imports GLB natively. The mesh arrives with a default material and no unit metadata.
Does the conversion add textures?+
No. STL has no texture information, so the GLB uses a plain material. Add your own material in Blender or three.js.
Need a model instead of a conversion?
Turn a photo, a drawing or a logo into a 3D model, then export it in the format you need.