Ximagic Quantizer
Ximagic Quantizer Toolbox with 10 color reduction filters (uniform, popularity, octree, median, wu, dennis lee, binary split, neuquant and scolorq) and 11 dithering filters error diffusion:(floyd-steinberg, fan, jarvis, stucki, sierra3, sierra2, sie…
5 Alternatives To Ximagic Quantizer
Black Bird Image Optimizer
Optimize pictures without quality lossless.
ImageAlpha
ImageAlpha is a GUI for pngnq and pngquant.
ImageOptim
Faster web pages and apps.
Optimage
Advanced image optimization tool
SqueezeFile
squeeze your files to different dimension.