exiftran

Digital Camera JPEG image transformation utility

exiftran is a command-line utility to transform digital image JPEG images. It can do lossless rotations like jpegtran, but unlike jpegtran, it cares about the EXIF data. It can rotate images automatically by checking the EXIF orientation tag, updating the EXIF information if needed (image dimension, orientation), and also rotating the EXIF thumbnail. It can process multiple images at once.