art50 to pes conversion is actually related to export of embroidery designs between ArtLink format (.art50) and (.pes) files used in Brother embroidery and stitching machines.
Bernina software (ArtLink) is most likely your best option how to achieve such export, but there are certainly alternatives available as well. If your software does not support this conversion directly, you can always try to use SVG or some common embroidery format for file exchange purposes.
Updated: October 9, 2023