This is pretty cool: .blend is the first native file format that gets animation support on Sketchfab. Previously, you had to export to FBX first, but no more!
Great news for Blender users! We now have native animation support for .blend files. This means you can upload your .blend file directly, there is no need to convert to an fbx file anymore. You can also use our native Blender exporter, which now adds a cool ‘uploaded with Blender’ icon to your model.
Here's a gallery of Blender animations on Sketchfab. Enjoy!