How to install pngquant on Ubuntu – Command-line PNG compressor
pngquant is a free and open source command-line based lossy PNG compressor for Linux, MacOS and windows. It converts png images to a 8-bit PNG format with alpha channel file to reduce the size. It comes with quality palette generation, gamma correction and premultiplied alpha support. During the conversion process it reduces the noise. You can configure the image quality level and it is based on libimagequant. It is released under GNU GENERAL PUBLIC LICENSE. It also supports batch conversion of PNG image files.
