PowerShrink enables you to reduce the size of Microsoft PowerPoint files (.ppt, .pps) by compressing them without noticeable quality loss. Most files we tested were reduced by 50% or more and according to the developer it can achieve results up to 90% depending on size and content of the presentation. The program offers different shrink modes based on the intended usage and you can also customize the compression by setting JPG quality, resolution and more. PowerShrink can process single or multiple files, offers optional command line options, shell integration (right-click menu) and can also be used directly from within PowerPoint. The program does not modify your original PowerPoint files.