Make ZIP files smaller with ZIP Shrinker
ZIP Shrinker is a new browser tool designed to reduce the size of ZIP files and other formats that use ZIP compression. It works by re-compressing files with a more efficient algorithm, removing metadata, and eliminating directory entries. The tool aims to help users save bandwidth and storage costs while maintaining compatibility with existing ZIP files.
- ▪ZIP Shrinker can compress various file formats, including APK, EPUB, and JAR.
- ▪The tool utilizes libdeflate for better performance in re-compressing ZIP files.
- ▪It removes unnecessary metadata and directory entries to achieve smaller file sizes.
Opening excerpt (first ~120 words) tap to expand
Make ZIP files smaller with ZIP Shrinkerby Evan Hahn, posted May 16, 2026, tagged #compression #tool #releaseI built ZIP Shrinker, a little browser tool to shrink ZIP files. It also works with formats that are secretly ZIPs underneath, like APK, EPUB, JAR, and many more.Try it out!How does it work?At a high level, this tool (1) re-compresses every file in the ZIP archive with higher compression (2) removes all metadata (3) removes entries for directories.Re-compressingZIP files are typically compressed with an algorithm called Deflate.There are a few tools that can re-compress Deflate data and make it smaller, usually by spending more time on the computation. I took one of these tools, libdeflate, and applied it to each compressed entry in the ZIP.
…
Excerpt limited to ~120 words for fair-use compliance. The full article is at Evanhahn.
Discussion
0 commentsMore from Evanhahn
