It looks like that jpeg to shv conversion is typically searched by users that are in need of making new embroidery design for Husqvarna Viking Designer 1 (.shv) based on a picture saved in JPEG format.
For this you will need one of the dedicated embroidery software that non only support SHV format, but also offers some kind of digitizing function that can be used to turn rasters to vectors.
Updated: November 6, 2023