SUMMARY I was really surprised that snap packet of gwenview does not support WEBP and JP2 at all. It only supports JPG. STEPS TO REPRODUCE 1. Install gwenview from snap 2. Try to open jp2 or webp image OBSERVED RESULT Format is not supported EXPECTED RESULT Image is opened, e.g. in openSuSE 15.3 gwenview rpm supports both formats. SOFTWARE/OS VERSIONS Linux: snap in Ubuntu 21.10