Rate my app: PNGSquash
miles: After running PNGSquash on a directory containing 10 PNGs totaling 456KB (which had already been optimized with pngcrush from the command line), it shrunk them to 432KB using the smallest squash level. The processing time was around 4m20s on a MacBook Pro with 3GB RAM.A similar tool is ImageOptim
http://pornel.net/imageoptim/en ,
an open souce GUI for the following PNG / JPG optimizers: AdvPNG, OptiPNG, PngCrush, JpegOptim, jpegtran, and optionally PNGOUT.Just curious about PNGOUT - did you get permission to bundle it with your app? Their license http://www.advsys.net/ken/utils.htm#pngoutkziplicense seems pretty restrictive: "Redistributing, repackaging, or reusing the PNGOUT or KZIP executable is prohibited without the express consent of Ardfry Imaging, LLC, and a formal business agreement."