STL to GLB Converter
Need to convert this file type? Drop it below — or drop any other file and we'll auto-switch. Outputs are auto-deleted after 2 hours; share links expire after 4.
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Convert STL to GLB online
Convert STL to GLB to put a printable model on the web or into an AR viewer. GLB packs geometry, materials, and textures into a single binary file, which is exactly what model viewers expect and why it has become the web's default 3D format.
When should you convert STL to GLB?
- Embed a model in a web page or a product listing
- View a design in an AR app on a phone
- Share a model as one self-contained file
- Prepare a mesh for a real-time 3D viewer
Before you convert
Plain geometry in, plain geometry out
GLB can carry materials and textures, but an STL has none, so the model will render in whatever default material the viewer applies.
One file, no sidecars
Unlike OBJ or glTF, GLB needs no accompanying files. This is the format to pick when you are handing a model to someone else.
What happens to your file
The STL mesh is loaded and re-exported as GLB. Straight geometry conversions go through trimesh; when textures and materials need to survive the trip, the job is handed to Blender instead.
Settings this conversion runs with
| Loader | trimesh |
|---|---|
| Textured path | Blender (GLB, glTF, OBJ) |
| Materials | Preserved |
What changes
- GLB packs the mesh, materials, and textures into a single binary file, which is what makes it the practical choice for the web and AR viewers.
About STL and GLB files
STL model
Strengths
- the 3D printing standard
- simple and widely supported
Limitations
- no color or texture
- triangles only
GLB model
Strengths
- packs textures and animation in one file
- modern web standard
Limitations
- binary, not human-readable
STL vs GLB
| Format | STL | GLB |
|---|---|---|
| Compression | — | — |
| Transparency | — | — |
| Best for | 3D printing, CAD exports | web and AR/VR 3D, game assets |
Guides for this conversion
- STL vs OBJ vs GLB: choosing a 3D format
Which 3D format carries geometry, which carries materials, which carries a whole scene — and why your textured model arrived grey.
Related tools
Frequently asked questions
- What survives when you convert STL to GLB?
- The STL mesh is loaded and re-exported as GLB. Straight geometry conversions go through trimesh; when textures and materials need to survive the trip, the job is handed to Blender instead.
- What should you know before converting STL to GLB?
- GLB packs the mesh, materials, and textures into a single binary file, which is what makes it the practical choice for the web and AR viewers.
- Is this STL to GLB converter free?
- Yes. You can convert STL to GLB online for free, with no account and no watermark.
- Do I need to install software or sign up?
- No. Use the converter from your browser without installing software or creating an account. Files are uploaded to our servers for processing.
- Are my files safe?
- Yes. Files are processed only to complete the conversion and are auto-deleted after 2 hours. We never share them.
- Can I convert multiple STL files at once?
- Yes. Drop several files to convert them in a batch and download the results as a single ZIP.