- use memory (instead of temporary files) during optimization,
support for reading input from stdin (and sending output to stdout),
report also libjpeg version when --version option used,
new option --strip-none to preserve "all" markers,
other minor fixes & cleanup
* support for progressive jpegs added (fixes long standing "bug" of progressive jpegs becoming non-progressive during optimization),
* new options --all-normal & --all-progressive for converting jpegs to non-progressive & progressive,
* new -S / --size option to set target size for output file (enables lossy optimization),
* The -T/--threshold option was added to set the minimum optimization gain
needed before a file is optimized. The default is to optimize if gain is
even just one byte.
* Some minor fixes were also done.
Collection. Provided by fab (AT) gnux (DOT) info in PR 24268,
slightly modified and pkglinted by me.
Utility to optimize JPEG files. Provides lossless optimization
(based on optimizing the Huffman tables) and "lossy" optimization
based on setting maximum quality factor.
