jpg to vss conversion is typically searched by users looking for a way to turn JPEG picture in Visio diagram or smart shape. You can do this in Visio if you know how, but it's not simple conversion/import/export procedure. If you don't know how to do it, you can watch some of the YouTube videos about this subject.
Another option would be to use utilities designed for this purpose, for example the PNG2VSS tool. It has been discontinued and is no longer developed, still you can find it on the Internet for download.
Updated: July 25, 2023