npm

pngcrush

Optimizer for PNG files that reduces file size without quality loss

brewmacoslinux
Try with needOr install directly
Source

About

Optimizer for PNG files

Commands

pngcrush

Examples

Basic PNG optimization with default settings$ pngcrush input.png output.png
Optimize PNG with maximum compression level$ pngcrush -9 input.png output.png
Process PNG with specific optimization method$ pngcrush -brute input.png output.png