PNGGauntlet is a utility to compress PNG images without any loss in quality. As PNG images can be very large, this is a handy utility for anyone. The program combines other open source programs into this one program.

Features:

Combines PNGOUT, OptiPNG, and DeflOpt to create the smallest PNGs

No image quality is lost — only file size

Converts JPG, GIF, TIFF, and BMP files to PNG

Ultra-configurable