@dan rathbun said:

@voltaicsca said:

If so, how does one access this functionality?

This is an operating system feature.

Previews will display if a thumbnail image has been saved INSIDE the file. (Which SketchUp can do with models.)

But this works only if a picture is available.... so thinking about SU only if I'm writing an exporter (in the case I've got the SU model and its thumbnail). But what about the opposite situation (an importer, say a DWG/DXF/OBJ etc)?