Convert GLB to STL
Convert GLB files to STL locally, completely free and with maximum privacy.
Drag and drop your files here
or click to browse local files (large files supported, limited only by browser RAM)
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How to convert GLB to STL
- Drop your .glb files above, or click Upload Files. You can add many files at once.
- STL is already selected as the output. Open the settings (gear icon) to fine-tune the result.
- Click Convert All. Assimp and three.js runs inside your browser through WebAssembly; nothing is uploaded.
- Download your .stl files as soon as each one finishes.
What to know about GLB to STL conversion
- STL stores geometry only, so materials, textures and animation are not included in the output.
- Binary STL is used: it is smaller than ASCII STL and accepted by every slicer.
GLB vs STL
| Feature | GLB (glTF Binary) | STL (Stereolithography) |
|---|---|---|
| Materials and textures | Yes | No |
| Animation and rigging | Yes | No |
| Best for | web, AR and game engines in a single compact file | 3D printing and CAD workflows |
| Opens in | Blender, three.js, Unity, Unreal and online viewers | Cura, PrusaSlicer, Bambu Studio and CAD software |
GLB (glTF Binary): The binary form of glTF 2.0, the standard 3D asset format for the web, AR, and game engines.
STL (Stereolithography): The standard mesh format for 3D printing and CAD, storing triangulated surfaces.
Conversion options
- Custom output file name
Frequently asked questions
Is it safe to convert GLB to STL here?
Yes. Your files are processed entirely on your own device by WebAssembly code running in the browser. They are never uploaded, so nobody else can see them, and the converter keeps working even if your connection drops after the page loads.
Is there a file size limit?
There is no server-side limit. The only limit is the memory available to your browser, typically 1.5–4 GB on desktop computers.
Can I convert several GLB files at once?
Yes. Add as many files as you like; they are converted in parallel according to your device's CPU cores, and you can apply the same settings to all of them.
Related conversions
Need the opposite? Convert STL to GLB.
Convert GLB to other formats
Convert other formats to STL
See every GLB converter and STL converter, or browse the full converter directory.