Jpegoptim is an utility to optimize JPG/JPEG files. Provides lossless optimization (based on optimizing the Huffman tables) and "lossy" optimization based on setting maximum quality factor.
What's New in This Release: [ read full changelog ]
· Support for progressive JPEGs has been added (fixes a long standing "bug" of progressive JPEGs becoming non-progressive during optimization).
· New options --all-normal and --all-progressive for converting JPEGs to non-progressive and progressive.
· A new -S / --size option to set the target size for the output file.