pngquan

download

Pngyu、ImageAlpha其实底层使用的是pngquant

使用pngquant后可以使用imageOptim再次优化

pngquant - 普通版本

pngquant-openmp - 多核支持，速度更快

pngquant-openmp

This makes pngquant faster in wall-clock time on multicore machines when oneimage at a time is processed.

However, it increases total CPU time used, and thus it‘s not most optimalfor server-side and parallelized batch jobs which run many pngquantinstances at a time.

图片优化工具