@kabel42 @rl_dane If I remember later when Iβm back on my computer, Iβll hunt down the one liner I usually use. If I remember correctly my usual one does do color reduction but also normal PNG compression and general file compression I think.
Itβs been a long time since I actually cared about image file types so not as well versed in it these days - but I keep that handy since my work sometimes throws a lot of JPEGs and PNGs my way that need to be compressed in bulk to fit some file upload limits.