ImageOptim

ImageOptim is a tool that optimizes images. It reduces disk space and improves load speed by finding the best compression parameters and removing unnecessary comments and color profiles. It supports PNG, JPEG, and GIF animations.

ImageOptim integrates the best optimization tools, including PNGOUT, Zopfli, Pngcrush, AdvPNG, extended OptiPNG, JpegOptim, jpegrescan, jpegtran, and Gifsicle. It is an excellent tool for publishing images on the web as it easily shrinks images “Saved for Web” in Photoshop. It is also useful for making Mac and iPhone/iPad applications smaller, provided you configure Xcode.

How to use it: Simply drag and drop images or folders into the window and they’ll be optimized in-place. You can also drop files on ImageOptim’s Dock icon, use the Services menu in Finder, or launch it from a shell script.

Open Source: ImageOptim is free, open-source software under the terms of the GPL v2 or later. Your contributions are welcome! Please check out or fork the source code on GitHub and improve it. Feel free to contact me for assistance.