BetterJPEG is a JPEG photo editor specifically designed to avoid recompression loss when editing photos. BetterJPEG takes advantage of the fact that JPEG images consist of a number of small independent blocks and does not recompress blocks that don’t have to be changed, retaining original quality and sampling settings.
The list of lossless JPEG editing supported includes rotation, crop, brightness and color adjustment, date/EXIF info/text insertion, red eye removal, conversion to grayscale, and more..
