Convert STL to GLB Online
Convert STL 3D models to GLB (binary glTF) directly in your browser — a free STL to GLB converter with no upload and no install. Preview the geometry, then download a web- and AR-ready GLB file.
This GLB file drops straight into <model-viewer>, AR Quick Look, and most game engines.
Drop your STL file here
Supported format: .STL
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Model
- Triangles
- Dimensions
Conversion Complete
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- File size
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Questions
Frequently Asked Questions
What is a GLB file?
GLB is the binary form of glTF, a compact 3D format designed for fast loading in web viewers, AR experiences, and game engines.
Is GLB a print-ready format?
No. GLB is intended for real-time rendering (web, AR, games) rather than 3D printing — use the STL to G-code tool if you want to print your model.
Is my STL file uploaded to a server?
No. The conversion happens entirely in your browser. Your file is never sent to our servers.
Does the GLB file include materials or textures?
This converter applies a simple default material, since STL itself carries no color or texture data to preserve.
Can I use this GLB with AR Quick Look or model-viewer?
Yes. GLB is directly supported by web 3D viewers such as <model-viewer>, and by iOS AR Quick Look and most Android AR viewers.