GLB to STL converter
Drop a GLB file and get an STL back in seconds. GLB is one self-contained file, used mostly for the web, Godot, three.js, Android AR and general sharing. STL is triangles only, the usual choice for 3D printing slicers. The conversion runs entirely in your browser, so your file never leaves your device.
Choose a file to see its details here. Nothing is uploaded: everything runs in your browser.
How to use the glb to stl converter
- 1Choose your GLB fileDrag it onto the panel or click to browse. It's read locally and never uploaded.
- 2Check the previewOrbit the model and check the triangle count, size and materials before converting.
- 3Download the STLExport a STL with one click. Downloads are included with every plan.
What carries over
- GLB textures don't carry over: STL supports no colour or materials.
- Animation and rigs are dropped; STL stores static geometry only. The model is exported in its rest pose.
- The STL is written Z-up, which is what slicers and scan tools expect.
- Units: GLB is metres by convention and STL is unitless (slicers assume millimetres). Numbers are copied 1:1, so check the size in the target app.
GLB vs STL
| GLB | STL | |
|---|---|---|
| Full name | binary glTF | stereolithography mesh |
| Appearance | PBR materials and embedded textures | no colour or materials |
| Animation | Yes | No |
| Units | metres by convention | unitless (slicers assume millimetres) |
| Best for | the web, Godot, three.js, Android AR and general sharing | 3D printing slicers |
Questions
- Is my GLB file uploaded?
- No. The GLB is parsed and the STL is written by JavaScript in your browser tab. The file never reaches our servers.
- Will the STL look the same as the GLB?
- The geometry is identical. STL holds no colour or materials, so surface appearance changes. See the notes above for this exact pair.
- Is there a file size limit?
- Files up to 150 MB open, but very large models depend on your device's memory. Desktop browsers handle big files best.