📰 Picopt News¶

v6.5.2¶

• Update to latest oxipng v10

v6.5.1¶

• Fix data loss when converting without external tools.
• Show platform-specific install hints in picopt doctor for missing tools.

v6.5.0¶

• Faster PDF detection
• Faster metadata extraction
• Defer animated image duration doublecheck to only WebP animated and only at handler time. Speeds up other animated images.
• Use rich_argparse to format cli help.

v6.4.0¶

• Update to Confuse 2.2.0
• Introduce new PicoptSettings class to type the config.

v6.3.1¶

• Fix frame duration erroneously extracted for MPO format, causing an error.

v6.3.0¶

• New progress and logging

v6.2.0¶

• Add bunx support for svgo
• Fix multiprocessing crash when using timestamps with some archives.
• Print stack traces when errors occur.

v6.1.1¶

• Treestamps 3.0.0

v6.1.0¶

• Rewote multiprocessing to enable more throughput.
• Added fail fast options for the entire workflow or only containers.

v6.0.0¶

• Picopt now recompresses PDFs and their image contents losslessly.
• Picopt now skips writing timestamps if no other disk writing operation occurred.
• Picopt doctor command shows what optimization tools are available.
• New architecture uses discoverable plugins to keep behavior contained in plugin files rather than spread out across the codebase.

v5.3.2¶

• Add option –timestamps-ignore-archive-entry-mtimes.
• Add type hints and py.typed sentinel file.

v5.3.1¶

• Fix incompatibility with Confuse v2.2.0
• Pin to Confuse v2.1.0 due to typing issues with Confuse v2.2.0

v5.3.0¶

• Use webpmux if available to unpack and repack animated webp images.
• Fix Animated WebP images:
  • Sometimes being repacked in reverse frame order.
  • Sometimes degrading quality.
  • Sometimes dropping frames.
• Use secure python temporary directory for unpacking animated webp images and chaining webp conversion input.
• Use img2webp if available for animated conversion to webp from png.
• Use memory buffers instead of disk for webp output.

v5.2.2¶

• Support Python 3.14

v5.2.1¶

• The confuse library dependency doesn’t support Python 3.14. So neither does picopt :(

v5.2.0¶

• MozJpeg is now an internal python module. External mozjpeg & jpegtran support removed.

v5.1.1¶

• Fix verbosity default too high.

v5.1.0¶

• Use gif2webp to convert GIFs to WebP. It saves space compared to picopt’s custom method.

v5.0.1¶

• Fix crash converting animated images with bad duration metadata.

v5.0.0¶

• Alert!
  • Timestamps options changed, invalidating old timestamps. On your first run in a path with picopt 5.0 you may use the -N option to ignore the old timestamp’s config differences.
• Fixes
  • Fix tif & animated gifs were not converted to pngs when specified.
  • Fix –ignore option wildcards and performance.
  • --ignore is now case insensitive on case insenstitive filesystems
• Features
  • Picopt learned to optimize 7-Zip and Tar Archives.
  • Ignore dotfiles by default. Disable with -I.
  • -T –test option becomes -d –dry-run
  • colors changed.
• Performance
  • Archives skipped without unpacking contents if all contents are skippable.
  • Animated pngs better optimized with oxipng
  • Faster scanning for legacy timestamps on startup.
• Dev
  • Updated treestamps
  • uv build system

v4.0.4¶

• Pillow 11 support.
• Better jpeg xmp preservation.
• Fix crash on reporting some errors.
• README Redhat installation and spelling fixes by @bpepple

v4.0.3 - Bad release¶

v4.0.2¶

• Fix windows mmap crash. Thanks @Fletcher.

v4.0.1¶

• Reduce overzealous png optimization. Provide an option to do that.

v4.0.0¶

• Alert!
  • Timestamps options changed, invalidating old timestamps. On your first run in a path with picopt 4.0 use the -N option to ignoring the old timestamp.
• Features
  • Support optimizing SVG with svgo.
  • Support converting more lossless formats to PNG & WEBP: CUR, DIB, FITS, IMT, PCX, PIXAR, PSD, QOI, SGI, SPIDER, SUN, TGA, XBM, XPM.
  • Support converting animated formats to animated PNG.
  • Support converting losslessly converting MPO to JPEG (choose primary image)
  • Internal oxipng replaces external optipng for png compression.
  • Better support for preserving EXIF, ICC_PROFILE, & XMP data across optimization and conversion.
  • --destroy-metadata option becomes --strip-metadata
  • --near-lossless option for lossless WebP.
  • --preserve file attributes after optimization.
  • --disable-programs option.
  • \~25% faster due to avoiding disk io.
• Fixes
  • wal file would write illegal key names and fail to load for some files.
• Dev
  • walk.run now returns totals instead of running report on them.

v3.3.7¶

• Fix
  • Remove Lossy WebP optimization. Wasn’t optimal.
  • Fix non zero exit code on success.
• Features
  • Improve WebP optimization.

v3.3.6¶

• If unrar is not available do not convert rar. Was making empty zips.
• Support zip deflate64

v3.3.5¶

• Wasn’t skipping directories appropriately.

v3.3.4¶

• Keep original path suffix if not converting.

v3.3.3¶

• Update treestamps fixes bugs.

v3.3.2¶

• Upstream treestamps returns to relative stamp paths for portability.

v3.3.1¶

• Upstream treestamps fixes crashes and check_config option.

v3.3.0¶

• Update deps including treestamps.
• New option to disable treestamps check of config section for a run.

v3.2.6¶

• Fix cleanup of temp dir when repacking a container or animated images fails.
• Simple error message instead of stack trace on config failure.

v3.2.5¶

• Fix occasionally removing both final and originals on case insensitive filesystem.

v3.2.4¶

• Fix error reporting
• Fix WebP Lossless detection

v3.2.3¶

• Color help. Change bigger color to blue.

v3.2.2¶

• Remove more debug print statements.

v3.2.1¶

• Remove debug print statements.

v3.2.0¶

• Animated PNG conversion to WEBP support
• Fixed showing total saved at the end
• Highlight conversions with color output
• Lowlight nothing saved results with dark colors
• Suppress stdout from programs
• Report errors in more detail
• Fixed verbosity count for cli
• Report on unhandled formats at verbosity > 1.

v3.1.4¶

• Remove extraneous debug print statement.

v3.1.3¶

• Fix not deleting working files
• Add progress dots to verbose level 1

v3.1.2¶

• Fix treestamps factory breaking.

v3.1.1¶

• Fix not skipping older than timestamp files.
• Add verbose logging skip files reason.

v3.1.0¶

• Change walk algorithm to complete directories and containers before opening new ones.
• Case insensitive format config.
• Ignore symlinks when asked to in timestamps.

v3.0.5¶

• Timestamps respect ignore option.
• Don’t record timestamps for items inside containers.
• Traverse directories alphabetically.

v3.0.4¶

• Fix timestamps not recording sometimes.

v3.0.3¶

• Don’t dump full timestamps after every dir completes.

v3.0.2¶

• Trap container repack errors.

v3.0.1¶

• Update treestamps to accept string paths.

v3.0.0¶

• Formats
  • WebP lossless, lossy and animated support.
  • Gain support for .zip archives
  • EPub support. ePub contents are never converted.
  • TIFF support
• Timestamps
  • Timestamps are now kept in .picopt_treestamps.yaml files.
  • Picopt will convert and clean up old style timestamps.
  • Timestamps are now recorded after optimizing every image for each image individually instead of directories, preserving progress.
  • Timestamps record configuration. Running with a new config invalidates non-matching timestamps.
• Configuration
  • .picoptrc.yaml files can configure options
  • Changed cli option names.
  • Removed cli args for manually disabling programs
  • Faster checking for external programs
• Fall back to Pillow optimization if better external programs not found.
• Colored terminal output.
• Fixes
  • Cleans up old temporary files from aborted picopt runs.
  • Fix condition where new files in an old archive were not processed.
  • optiping optimization level changed to o5
  • Exif & icc metadata preserved in all formats much better by default.

v2.2.1¶

• Support python v3.9
• Preserve comments when optimizing comic archives

v2.2.0¶

• Walk in alphabetical order
• Check code with vulture and radon

v2.1.0¶

• Remove adv support.
• Remove jpegrescan support. Inferior to mozjpeg
• Don’t preserve ctime/mtime when making new pngs
• Use pytest instead of nosetest
• Require formatting with black & isort

v2.0.1¶

• Pillow 7 compatibility

v2.0.0¶

• Stop supporting python 2
• Switch to poetry build system
• Type checking with mypy

v1.6.3¶

• Don’t use pngout on 16 bit pngs because it crashes
• Fix broken option -D –optimize_after

v1.6.2¶

• Fix illegal stack trace call.

v1.6.1¶

• Fix exception handling when extern process returns non-zero

v1.6.0¶

• Report on all errors at the end
• Remove PIL support in favor of Pillow.
• Python3 proof

v1.5.3¶

• Fix hang on external program error. Likely with 16 bit PNGs and pngout.

v1.5.2¶

• More compatibility with Python 3
• Fix formats as a list when it should be a set issue

v1.5.1¶

• Drop TIFF support.
• Fix space savings reporting bug where savings always equaled zero

v1.4.5¶

• When setting new timestamps, don’t remove timestamps above the root paths specified as input

v1.4.4¶

• Use timestamp caching more often

v1.4.3¶

• Fix bug where files were not detected
• Fix broken timestamp processing.

v1.4.1¶

• fix main entry bug for cli

v1.4.0¶

• let the archive date override the newness of its contained files.
• let the cli run programmatically with passed in args
• code no longer relies on cwd for finding its way
• -d –directory argument goes away
• nosetests now run the old inadequate cli tests
• big code cleanup
• don’t redetect new image format type

v1.3.3¶

• Print found picopt timestamps
• Lots of linting
• Fix jpeg_multithread flag
• moved tests out of picopt module

v1.3.2¶

• Keep version in one place in picopt/init.py

v1.3.1¶

• Remove dev dependencies from installed requirements.

v1.3¶

• break up monolithic picopt into modules. No functional change.

v1.2¶

• picopt learned the -j option for specifying number of subprocesses (thanks @DarwinAwardWinner)

v1.1.3¶

• fixed rare crash on sequential gif detection

v1.1.2¶

• detect PNM images properly for conversion with optipng

v1.1.1¶

• fix verifying gif crash (thanks @DarwinAwardWinner)

v1.1.0¶

• mozjpeg support (thanks to @crass00)

v1.0.6¶

• Fix disabled comic archive switch.

v1.0.5¶

• Fix timestamp writing to happen once workers have finished
• Fix size saved if size in is zero

v1.0.3¶

• Fix -v to actually be more verbose than default
• Fix from Dennis Schwertel to jpegtran runner

v1.0.2¶

• Fix -Y to actually disable not enable type conversion

v1.0.1¶

• Fix typos in –help

v1.0.0¶

• Packaging for PyPI
• Internal changes to make picopt more modular and library friendly
• CHANGED COMMAND LINE ARGUMENT LETTERS.
• Added verbosity setting
• Truncated relative and in-archive path names for readibiliy
• Nag about animated gifs less

v0.12.0.1¶

• Fix error on no directories

v0.12.0¶

• Added multithreaded jpegrescan operation when picopt isn’t using up all the cores at the suggestion of Alex Roe.
• Added destroy metadata option at the suggestion of Alex Roe.

v0.11.4¶

• Added to ArchLinux by Alex Roe.