Convert GLB to OBJ
Convert a GLB into a Wavefront OBJ, with its material and texture files packaged alongside.
Free, no account, up to 50 MB per file. Uploads are private and deleted after 24 hours unless you sign in, which claims them and keeps them for 7 days.
What survives GLB → OBJ
- Geometry
- UV coordinates
- Materials and textures, as separate files inside a ZIP
What is not carried across
- PBR material properties that OBJ's material model has no field for — metallic, roughness and emissive maps do not map cleanly onto MTL.
- Scene hierarchy and node transforms beyond what the OBJ groups can express.
About GLB files
- GLB bundles geometry, materials and textures into one file, which is why it converts cleanly in both directions.
- Skinned meshes and morph targets are refused rather than silently flattened — the result would not be the model you uploaded.
Why OBJ
- Read by essentially every DCC application ever written; a safe interchange format.
- Plain text, so it can be inspected and diffed.
Common problems
- The download is a ZIP rather than an .obj.
- That is deliberate. An OBJ with materials is several files, and delivering only the .obj would silently discard them.
- The OBJ opens without its textures.
- Extract the whole ZIP into one directory. The .obj references the .mtl and the images by filename.
After converting
Converting changes the container, not the geometry — a heavy model stays heavy. If the result is destined for the web or a game engine, reducing its triangle count is the part that makes it load faster.