Sketchfab 3D file formats: what opens and how
Sketchfab is the largest platform for publishing and embedding 3D models on the web, with its own viewer and store. It opens 7 of the 9 common 3D formats below without conversion; for the rest, convert to GLB first.
Format support at a glance
| Format | Support | How |
|---|---|---|
| GLB | Built in | Upload (top bar), then choose the .glb |
| glTF | Built in | Upload, choosing a zip of the .gltf with its .bin and textures |
| OBJ | Built in | Upload, choosing a zip of the .obj, .mtl and textures |
| STL | Built in | Upload, then choose the .stl |
| FBX | Built in | Upload, then choose the .fbx (zip it with any external textures) |
| PLY | Built in | Upload, then choose the .ply |
| 3MF | Convert first | Convert to GLB |
| DAE | Built in | Upload, then choose the .dae (zip it with textures) |
| USDZ | Convert first | Convert to GLB |
Which format to choose
GLB and FBX are the most dependable choice for Sketchfab. GLB is the cleanest upload: materials and textures are found automatically. If a model arrives as 3MF, USDZ, convert it to GLB so materials survive the trip.
Units and orientation
Sketchfab works in any (the viewer frames the model) and is Y-up or Z-up (set in the 3D settings editor). Most problems after an import, such as a model that is invisible, enormous or lying on its side, come from a mismatch with the exporting app rather than a broken file.
- After uploading, open Edit 3D Settings to fix orientation, lighting and materials before publishing.
- Zip an OBJ together with its .mtl and textures so Sketchfab finds them.
Questions
- What 3D formats can Sketchfab open?
- Without conversion: GLB, glTF, OBJ, STL, FBX, PLY, DAE.
- How do I get an unsupported format into Sketchfab?
- Convert it to GLB with one of our in-browser converters, then import the GLB. In Sketchfab: Upload (top bar), then choose the .glb.
- Does Sketchfab keep textures and animation?
- Yes, when the format carries them. GLB and FBX keep the most; STL and PLY carry no textures.
Source: the official Sketchfab documentation. Menu names can move between versions.
Written with AI assistance by the Renderlyst team in October 2026. Format support reflects each app's current release as we understand it, and we link the official documentation so you can confirm it for your version. Spotted something out of date? Email alishbakhalid766@gmail.com.