The Maya exporter lets you publish 3D files straight from Maya to Sketchfab.
Models are exported in FBX format. The FBX plug-in comes with Maya and should be automatically installed and loaded. If it's not, you can find instructions for installing it in the Autodesk Knowledge Base. You can check that the plug-in is loaded from Window → Settings/Preferences → Plug-in Manager. It will be in the list as fbxmaya.bundle (Mac OS X) or fbxmaya.mll (Windows).
In order to preserve texture information, it's important to check your FBX export settings. Go to File → Export All... and choose FBX export from the Files of type drop-down. In the options, make sure Embed Media is enabled. Under FBX File Format, you can also change Type to Binary, which will reduce file sizes and upload times.
When the upload is complete, you can view your model on Sketchfab, adjust rendering settings, and save the default view. Any errors and warnings, such as issues with texture formats, will be logged in the Script Editor (Window → General Editors → Script Editor), as well as a log file in your Maya preferences directory.
There are some known issues in Maya 2014. When Maya loads, you might see a warning about pymel.internal.factories. This should not affect the exporter. Sometimes, the Settings dialog fails to open and throws an error. Just close the exporter and open it again.
If you run into problems, please contact us. You can also try the old version of the 2014/2015 exporter, below, if you're using Maya 2014 (Windows & Mac OS X) or 2015 (Mac OS X).
These older versions use the OBJ format. Make sure any normals point outwards, otherwise the lighting will fail and appear black. OBJ does not support shaders like anisotropic or phong E or blinn. You need to convert them to either phong or lambert. OBJ does not support NURBS surfaces. These must be converted to polygons.
For more detailed instructions and other information, watch the video above.