this blender sketchfab addon lets you download models from sketchfab and import them into blender without ever leaving blender
The updated Blender plugin allows for easy import into Blender of over 740,000 free Sketchfab models as well as any of your purchased Sketchfab Store assets. The plugin also makes it simple to export your Blender scenes to Sketchfab.
blender sketchfab addon download page:
After installation, the addon is available in the 3D view in the tab ‘Sketchfab’ in the Properties panel (shortcut N) for Blender 2.80 and after, and in the Tools panel (shortcut T) for Blender 2.79.
Login (mandatory to import or export models) can be achieved through using the email and password associated to your Sketchfab account, or by using your API token, available in the settings of your Sketchfab account:
Download human generator: