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| Jpegoptim v1.5.4 - Copyright (C) Timo Kokkonen, 1996-2023. All Rights Reserved. | |
| REQUIREMENTS | |
| Independent JPEG Group's jpeg library (libjpeg) version 6b or later. | |
| (Alternatively should also work with libjpeg-turbo or mozjpeg) | |
| TESTED PLATFORMS | |
| Linux | |
| MacOS | |
| Windows (setargv.obj "link option" is needed for wildcards expansion to work) | |
| INSTALLATION | |
| Installation should be very straightforward, just unpack the | |
| tar file, make necessary changes to the Makefile, and then | |
| compile the program. You may wanna do something like this: | |
| tar xzvf jpegoptim-1.5.4.tar.gz | |
| cd jpegoptim-1.5.4 | |
| ./configure | |
| make | |
| make strip | |
| make install | |
| HISTORY | |
| v1.5.4 - make sure JPEG mode (progressive vs non-progressive) is | |
| preserved by default, | |
| fix parallel processing when reading file list | |
| (thanks to Cubittus) | |
| v1.5.3 - fix potential heap-buffer-overflow (read) when using | |
| stdin/stdout and processing corrupt JPEG | |
| v1.5.2 - add support for reading list of files to process from a file | |
| (--files-from) or from standard input (--files-stdin), | |
| improved JPEG marker reporting, | |
| fix -d, --dest option (thanks to Almas Kunapyanov), | |
| other minor fixes | |
| v1.5.1 - fix logging to stdout when --stdout is used *thanks to Eta, | |
| improved CMake support (and Github CI stuff) *thanks to Eta, | |
| update --treshold option accept decimal numbers as parameter, | |
| fix crashes when processing certain broken JPEG images, | |
| fix memory leaks, | |
| fix (logging) output in parallel processing mode | |
| v1.5.0 - add --workers=<max> option to enable parallel processing | |
| fix --stdin option, | |
| other minor fixes | |
| v1.4.7 - experimental support for arithmetic coding (enable with | |
| configure option --with-arith), | |
| add option --nofix, | |
| add support for JFIF Extension (JFXX) markers, | |
| support for nanosecond timestamps (thanks to GerbilSoft), | |
| optimization now works same with stdin as with standard files, | |
| fixed --size (-S) option not working correctly when processing | |
| multiple files, | |
| new --keep-* options to use with --strip-all (see man page), | |
| other minor fixes | |
| v1.4.6 - fix double free introduced in previous release | |
| v1.4.5 - fix --overwrite option, | |
| better error reporting for -d option, | |
| fix memcmp() potentially reading past end of buffer, | |
| some minor fixes | |
| v1.4.4 - more detailed error messages (thanks to Denis Fateyev), | |
| CMake support (thanks to Ghostkeeper), | |
| other minor fixes | |
| v1.4.3 - fix bug that could cause jpegoptim crash when processing | |
| certain jpeg files | |
| v1.4.2 - add option -P, --preserve-perms, | |
| some minor fixes | |
| v1.4.1 - fix --stdin option (assume -f when reading from stdin), | |
| workaround to bug in libjpeg-turbo (v1.3.1) triggered | |
| when option -V or --version was used, | |
| other minor fixes | |
| v1.4.0 - 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 | |
| v1.3.1 - XMP marker support and new --csv option (by Matteo Croce), | |
| use DESTDIR instead of INSTALL_ROOT (by Samuli Suominen), | |
| changes to make compiling under Win32 and Win64 | |
| easier (thanks to Javier Gutiérrez), | |
| preserve permissions of files being optimized, | |
| skip symlinks (and other special files), | |
| other minor fixes | |
| v1.3.0 - 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), | |
| updated GPL/Copyrights language (thanks to Nicolas Vieville) | |
| v1.2.5 - safer temp file handling (if mkstemps() available), | |
| patch to make "quiet mode" (-q) be quiet by Mathieu Malaterre | |
| v1.2.4 - new -T / --threshold option by Matteo Croce, | |
| minor fixes (potential memory leaks), | |
| merged some patches from Debian jpegoptim package (1.2.3-2) | |
| v1.2.3 - IPTC marker support by Dustin Ward, | |
| ICC profile support by Dwight Kelly, | |
| minor fixes | |
| v1.2.2 - Now Exif and COM markers are not discarded | |
| (all other markers are discarded as before). | |
| New options --strip-all, --strip-exif, and --strip-com | |
| added for controlling what markers to strip. | |
| v1.2.1 - fixed buggy temp file handling | |
| v1.2.0 - Added new options --overwrite and --preserve. | |
| GNU autoconf support added, also. | |
| v1.1 - new -f option, and other minor changes, improved | |
| support for other platforms | |
| v1.0a - some changes in docs & makefile | |
| v1.0 - first public release | |
| LATEST VERSION | |
| Latest version is always available from: | |
| http://www.iki.fi/tjko/projects.html | |
| Sources (GIT) | |
| https://github.com/tjko/jpegoptim | |
| ACKNOWLEDGEMENT | |
| This software is based in part on the work of the Independent JPEG Group. | |
| SPONSORS | |
| Special thanks for following Github Sponsors that have supported jpegoptim: | |
| - midir99 | |
| Timo <tjko@iki.fi> | |
| 14-May-2023 |