OptiPNG - OptiPNG is a command-line PNG optimizer that recompresses image files to a smaller size, without...
TalkJarvis Image Compressor - Online Image Compressor – Compress any type of image online
JPEG Resampler - Jpeg Resampler, nástroj pro konverzi a změnu velikosti obrázků, snadné použití, zdarma
Imagecompressor.io - Tool to compress jpeg & png images online.
pngquant - command-line utility and library for lossy compression of PNG images
Image Compressor - Windows/Steam desktop tool to compress images and save size with almost the same quality.