pngcrush

v 1.8.13

optimizer for PNG files

pngcrush reads in a PNG image, and writes it out again, with the optimum filter_type and zlib_level. It uses brute force (trying filter_type none, and libpng adaptive filtering, with compression levels 3 and 9). It does the most time-consuming method last in case it turns out to be the best. Optionally, it can remove unwanted chunks or add gAMA and sRGB chunks.

http://pmt.sourceforge.net/pngcrush/

To install pngcrush, paste this in macOS terminal after installing MacPorts

sudo port install pngcrush

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Installations 44
Requested Installations 26