Convert GLTF to GLB Online
GLTF and GLB serve different purposes. Convert GLTF to GLB here when you need web 3D, AR, model delivery.
How to convert GLTF to GLB
- Upload your GLTF file. Drag it onto the box above or click to browse. Files up to 200 MB are accepted.
- Choose GLB as the output. The target format is pre-selected on this page — just press “Convert now”.
- Download the result. Conversion runs on our own server and the download starts as soon as it is ready. Your files are deleted automatically.
Why convert GLTF to GLB?
People convert GLTF to GLB mainly for compatibility. Native in three.js, Babylon.js and modern engines. GLB, by contrast, is built for web 3D, AR, model delivery, and same support as glTF, easier to ship.
GLTF vs GLB: key differences
| GLTF | GLB | |
|---|---|---|
| File type | scene | scene |
| Typical use | web 3D, AR/VR, real-time viewers | web 3D, AR, model delivery |
| Compatibility | Native in three.js, Babylon.js and modern engines. | Same support as glTF, easier to ship. |
Tips for a clean GLTF to GLB conversion
- Native in three.js, Babylon.js and modern engines.
- Use the highest-quality source GLTF you have — converting a compressed file again cannot restore lost detail.
- If you only need a smaller file, try a lower resolution or bitrate instead of a different format.
- Keep the original GLTF until you have checked the converted GLB opens the way you expect.
Frequently asked questions
How do I convert GLTF to GLB?
Upload your GLTF file to the converter on this page, make sure GLB is selected as the output format and click “Convert now”. When the conversion finishes the download starts automatically.
Is this GLTF to GLB converter free?
Yes — it is completely free and needs no account. Files up to 200 MB are accepted, and heavy use is rate-limited so the service stays available for everyone.
Will converting GLTF to GLB reduce quality?
GLB uses its own compression, so the converted file is re-encoded. Quality loss is minimal at sensible settings, but keep the original GLTF if you may need to convert again later.
What is a GLTF file?
GLTF is the 'JPEG of 3D' — a compact, web-friendly 3D scene format. Its technical name is GL Transmission Format and it is typically used for web 3D, AR/VR, real-time viewers.
What is a GLB file?
GLB is the single-file binary version of glTF, embedding all textures. Its technical name is Binary GL Transmission Format and it is typically used for web 3D, AR, model delivery.
Can I convert GLTF to GLB on my phone?
Yes. The converter runs in the browser on Android, iOS, Windows, macOS and Linux — no app installation is required.
Are my files kept on the server?
No. Uploaded files and converted results are deleted automatically a short time after the conversion finishes.