ImageMagick is described as 'Software suite to create, edit, and compose bitmap images. It can read, convert and write images in a variety of formats (about 100) including GIF, JPEG, JPEG-2000, PNG, PDF, PhotoCD, TIFF, and DPX' and is a very popular Image Optimizer in the photos & graphics category. There are more than 50 alternatives to ImageMagick for a variety of platforms, including Windows, Mac, Linux, Web-based and BSD apps. The best ImageMagick alternative is File Converter, which is both free and Open Source. Other great apps like ImageMagick are JPEGView, XnConvert, OptiImage and GraphicsMagick.