Lemkesoft has released GraphicConverter 7.2. Among the many new features are a command to Select Last Selection, additional movie options for batch conversions, WebP import and export, Apple-Touch-Icon export support, and an option to cycle through open windows. Full release notes are available at Lemkesoft’s site. (Free update, $39.95 new, 100 MB)
I am still using and finding satisfaction with GC 6.7.4, having installed 7.0.3 and then trashed it because I couldn't find how to Slide Show which used to be Command-D,
Life is short. Keep it simple.