A free and easy to use drag-and-drop PNG compressor app for OS X
Version: 1.1.1PNGSquash is an OS X app that combines the top PNG compressors (that is, PNGCrush, AdvPNG, OptiPNG and PNGOut) into a streamlined interface for quick and effective compression.
Operating System: Mac OS X
PNGSquash uses lossless compression (i.e., there is no change in quality), so it is ideal for web developers looking to save bandwidth.
NOTE: PNGSquash is released and licensed under the terms of the zlib/libpng License.