pngcrush
PNG compression utility. More information: https://pmt.sourceforge.io/pngcrush.
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Compress a PNG file:
pngcrush {{in.png}} {{out.png}} -
Compress all PNGs and output them to the specified directory:
pngcrush -d {{path/to/output}} *.png -
Compress PNG file with all 114 available algorithms and pick the best result:
pngcrush -rem allb -brute -reduce {{in.png}} {{out.png}}
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