Editing is done on each image, but cropping would be more efficient if done on many photos at once. This task can be done without the need JPEGCrops lower quality JPEG image files because it will not be compressed again.
As known, the compression will reduce image quality.
Info : http://ekot.dk/programmer/JPEGCrops
OS : Win 9x/ME/2000/XP
Download : JPEGCrops 0.6.12