Runs on your device · Your file never leaves your device.
A GLB is a sealed parcel — geometry, materials and textures in one binary file. Some older programs will not open it at all. This unpacks it into an OBJ, the format that everything reads.
Expect the OBJ to be considerably larger than the GLB it came from. That is not a mistake: GLB stores numbers in a compact binary form, often compressed further with Draco, while OBJ writes every coordinate out as readable text. The shape is identical; only the way it is written down has changed.
The conversion runs on your own machine, which for a 3D file is the whole point: a model is usually a client’s product, a scanned property or something not yet announced. Nothing is sent to a server, so there is nothing to delete afterwards and nothing to take anyone’s word for.
How to convert GLB to OBJ
Drop the GLB file — and its companion files if it has any.
Check that OBJ is selected.
Press Convert.
Download the OBJ file.
Supported formats and limits
Input
GLB
Output
OBJ
Companion files
MTL and texture images are used when you add them
Keeps animation
No — the format cannot store it
Where it runs
In your browser; the model is never uploaded
Not for: Keeping animation — OBJ has nowhere to store it. Convert to glTF instead if the clips matter.
Frequently asked questions
Are my files uploaded to a server?
No. This conversion runs entirely inside your browser using your own device’s processing power. The file never leaves your computer or phone, which is why it also works when your connection drops.
Why is the OBJ so much bigger than the GLB?
Because OBJ is plain text and GLB is compact binary, frequently Draco-compressed on top. A file five or ten times the size with exactly the same geometry is normal and expected.
Are Draco-compressed GLB files supported?
Yes. The decompressor is served from this site, so it works even when other people’s CDNs are down, and the model opens without you having to know it was compressed.