MozJAR Recompressor is a simple script that allows you to recompress Jar archives (omni.ja / palemoon.res) used in Mozilla based browsers, such as Firefox, Pale Moon, SeaMonkey or Waterfox. It can be used to change the compression algorithm (Deflate / Brotli / Store), optimization and preload settings.
Warning! This tool is intended for research purposes only. You should never distribute modified binaries, as it may violate the rights of original authors.