pngcomp

tool for optimizing PNG (Portable Network Graphics) images

Install

All systems
curl cmd.cat/pngcomp.sh
Debian Debian
apt-get install pngnq
Ubuntu
apt-get install pngnq
image/svg+xml Kali Linux
apt-get install pngnq
CentOS
yum install pngnq
Fedora
dnf install pngnq
Windows (WSL2)
sudo apt-get update sudo apt-get install pngnq
OS X
brew install pngnq
Raspbian
apt-get install pngnq
Dockerfile
dockerfile.run/pngcomp

pngnq

tool for optimizing PNG (Portable Network Graphics) images

Pngnq is a tool for quantizing 32-bit RGBA PNG images to 8-bit RGBA pallete PNG. It's is an adaptation by Stuart Coyle of Greg Roelf's pnqquant. While pngquant uses a median cut algorithm, Pngnq uses Anthony Dekker's neuquant algorithm (http://members.ozemail.com.au/~dekker/NEUQUANT.HTML), generally resulting in better looking results than pngquant. Optimizers (like pngcrush and optipng) optimize the compression, usually losslessly. pngnq quantizes colors down to 256 (or fewer) distinct RGBA combinations, which is quite lossy. Optimized PNGs are usually two to four times smaller than the 32-bit versions.