There was a time when ACDSee (a free program in the Windows 95 era) could batch convert, and batch crop pictures.
Their JPeg image compression was really good as well! High quality for a very low size.
Can anyone tell me if the Paperwhite reads jpeg2000?
And what is the best format it can read for photo's, graphics, or maps?
(Usually maps is .gif, photo's jpeg 2000, and old school graphics either SVT or GIF or compressed TIFF.