Free 3D File Converter
GLB to glTF Converter
Drag in a .glb file, see it in 3D, and download a clean .gltf in seconds — right in your browser. No upload, no sign-up, no quality loss.
- ✓ 100% free
- ✓ Private — nothing uploaded
- ✓ Instant, in-browser
- ✓ No sign-up
No 3D file handy? Try a classic model
Click any model to load it into the converter above and convert it instantly.
Sample models from the public common-3d-test-models repository.
.glb in Web, AR & real-time (single file) .gltf out Web, AR & real-time How to convert GLB to glTF
Drop your .glb file into the box above, click to browse, or pick a classic sample model. It loads instantly — nothing is uploaded.
Your model renders in an interactive 3D viewer. Drag to rotate and confirm it is the right mesh.
Click Convert to glTF and download your .gltf file — ready for Blender and any glTF app.
GLB vs glTF: what's the difference?
| Feature | GLB | glTF |
|---|---|---|
| Geometry (mesh) | ✓ | ✓ |
| Color | ✓ | ✓ |
| Materials | ✓ | ✓ |
| UV textures | ✓ | ✓ |
| Best for | Web, AR & real-time (single file) | Web, AR & real-time |
| File size | Compact (binary) | Medium (JSON + assets) |
What is a GLB file?
GLB is the binary form of glTF: a single self-contained file that packs geometry, PBR materials, textures and animation together. It is the preferred delivery format for the web, AR Quick Look and game engines because it loads fast and never loses its textures.
What is a glTF file?
glTF is the modern, web-native standard for 3D — often called “the JPEG of 3D”. The .gltf variant is JSON-based and carries full PBR materials, textures, UVs, scene hierarchy and even animation, making it ideal for the web, AR and real-time engines.
Why convert GLB to glTF?
Binary glTF (.glb) is gLB is the binary form of glTF: a single self-contained file that packs geometry, PBR materials, textures and animation together. It is the preferred delivery format for the web, AR Quick Look and game engines because it loads fast and never loses its textures.
Both formats carry similar data, so the conversion is lossless while making your model usable wherever glTF is preferred. glTF is the modern, web-native standard for 3D — often called “the JPEG of 3D”. The .gltf variant is JSON-based and carries full PBR materials, textures, UVs, scene hierarchy and even animation, making it ideal for the web, AR and real-time engines.
This converter does the translation locally, in your browser: your file is read into a real 3D engine, shown so you can confirm it, then re-exported as a standards-compliant glTF — no server, no account, no upload queue.
When to convert GLB to glTF
Texturing & rendering
Open the glTF in Blender, Substance or your renderer to add colour, PBR materials and textures the GLB could not hold.
Game & real-time assets
Engines such as Unity and Unreal prefer web, ar & real-time formats. The converted glTF fits straight into asset pipelines.
Editing & remeshing
Need to sculpt, retopologize or repair a model? Convert to glTF so it opens in the tools that handle that best, then export again.
Sharing & interchange
glTF is widely supported, making it a safe format for handing a model to a teammate, client or another application.
Your glTF works everywhere
The exported glTF imports cleanly into the major tools for web, ar & real-time:
- Blender
- three.js
- Babylon.js
- Unity
- Unreal
- Godot
Tips for the best GLB → glTF results
- • Repair scans first. If your GLB came from a 3D scanner, run a quick mesh repair (Blender or MeshLab) to close holes before converting.
- • Expect a size change. glTF is medium (json + assets), so the output size may differ from your GLB — that's normal.
- • Check scale & orientation. Different tools assume different units. After importing the glTF, confirm the model's size and up-axis match your scene.
- • Keep the original. Conversion is one-way here, so hold on to your source GLB in case you need to re-export with different settings.
Frequently asked questions
Is this GLB to glTF converter free?
Yes — completely free, no sign-up and no watermark. The conversion runs entirely in your browser using WebGL, so your file never leaves your computer and there is no upload wait.
Does converting GLB to glTF lose quality?
No — both formats store comparable data, so the geometry and materials are preserved and the conversion is effectively lossless.
What is the largest GLB file I can convert?
Because everything runs locally, the limit is your device's memory rather than an upload cap. Most models up to a few hundred MB convert smoothly on a modern laptop.
Where can I use the converted glTF file?
glTF is web, ar & real-time. The exported file imports cleanly into Blender, three.js, Babylon.js, Unity and other glTF-compatible tools.
Is it safe to convert private or proprietary models?
Yes. Nothing is uploaded — the file is read and converted on your own device, then the glTF is generated locally for download. Your model stays private.