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v3.0.0
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@chrissimpkins chrissimpkins released this 04 Jun 02:15
· 130 commits to master since this release
v3.0.0
cdf4a0d

This release includes a large number of changes across all applications in the Crunch repository. crunch executable users should rebuild the project dependencies to take full advantage of the changes in this release. See the executable upgrade documentation for details.

Changes:

  • improved quality of pngquant quantization of PNG images across all file sizes
  • upgraded embedded pngquant to v2.12.0 (includes reduced pngquant optimization times)
  • converted to custom build of zopflipng that is modified for use in the Crunch applications (forked from google/zopfli at git tag zopfli-1.0.2) at git version tag v2.1.0 (source repository is chrissimpkins/zopfli)
  • improved zopfli compression ratios for post-quantized and non-quantized in-file sizes under 350kB. Many files are ~33% original file size after they are quantized with pngquant so this affects pre-optimization files up to just over ~1MB in size when the pngquant step is completed (the quantize step yields a modified image binary when it does not lead to larger file size or image quality below Crunch project thresholds, when this does not occur the original file at the original file size is used as the in-file to zopflipng)
  • improved zopfli compression speed for post-quantized and non-quantized in-file sizes over 750kB
  • eliminate optional PNG chunks by default in all files (reduces file size)
  • converted to use of PNG filter = 0 for zopflipng compression of all quantized files (increases compression speed)
  • use automated detection of best PNG filter for zopfli compression in all non-quantized files (improves compression)
  • remove hidden colors behind alpha channel 0 in files that are not quantized due to low quality or increased file size following pngquant runs
  • added new macOS GUI animations with success and fail indicators (thanks Gary Jacobs!)
  • added logging of compression data and errors in macOS GUI and macOS right-click menu service tools in a new log file that is generated on the path ~/.crunch/crunch.log
  • updated redirect to /dev/null in install-dependencies.sh compile script for POSIX compliance
  • refactored command line option parsing code (thanks Chris Clauss!)
  • added new bug reporting template
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