ImageOptim - Faster web pages and apps.
OptiPNG - OptiPNG is a command-line PNG optimizer that recompresses image files to a smaller size, without...
FILEminimizer Pictures - FILEminimizer Pictures compresses JPEG photos, TIFF, BMP and PNG images and pictures by up to 98%.
JPEG Resampler - Jpeg Resampler, nástroj pro konverzi a změnu velikosti obrázků, snadné použití, zdarma
Shrink O'Matic - Shrink O'Matic is an AIR application to easily (batch) resize (shrink) images.
pngquant - command-line utility and library for lossy compression of PNG images