Ken Silverman (of Build Engine fame) has written a few deflate-centric compression utilities[0]. The PNGOUT recompressor is the most famous of these (and is ver

Ken Silverman (of Build Engine fame) has written a few deflate-centric compression utilities[0]. The PNGOUT recompressor is the most famous of these (and is very good – it practically always beats OptiPNG), but the suite also includes a .zip archive recompressor called KZIP. I'd be curious to see how ZIP Shrinker compares to this tool. [0]: https://advsys.net/ken/utils.htm https://advsys.net/ken/utils.htm