Image Compression

Lossy PNG Optimization

how to do lossy PNG optimization for Web and what tools you should use to do color quantization, lossy filtering or posterization.

lossy filtering
original pingo
Colored lab 4 Colored lab - pingo
90,6 KB 49,5 KB
Image Compression

TruePNG

how TruePNG do image reductions on PNG files and why it performs better than other tools with stronger compression algorithm.

TruePNG, colors ordering in PNG palette
Standard TruePNG
Colors ordering brown pngrewrite Colors ordering brown by TruePNG
21,0 KB 17,0 KB
Image Compression

PNG tools overview

a quick overview of some PNG optimizers and what they can do. see also the PNG Test Corpus for results and comparison.

Colors ordering brown pngrewrite