ImageOptim optimizes images — so they take up less disk space and load faster — by finding best compression parameters and by removing unnecessary comments and color profiles. It handles PNG, JPEG and GIF animations. ImageOptim seamlessly integrates various optimisation tools: PNGOUT, AdvPNG, Pngcrush, extended OptiPNG, JpegOptim, jpegrescan, jpegtran, and Gifsicle. It's excellent for publishing images on the web (easily shrinks images “Saved for Web” in Photoshop) and also useful for making Mac and iPhone/iPad applications smaller.
Included PNGOUT by default. Now ImageOptim includes all best optimisation tools out of the box! Simplified preferences: options for stripping PNG chunks and JPEG EXIF data are in one place Localization fixes by Gildas Lormeau View Source option — because not only web apps have viewable source code :)