We show you how to compress a PowerPoint slide, and reduce its file size. The more info you add, the more the size increases; esp. videos, audio, and images.

Use the new PowerPoint 2007 format, which uses the PPTX file extension. It's a lot smaller than the old PPT format. Compress your images for the screen.

If you've ever tried to email a Powerpoint presentation or grab it on your USB drive for quick transport, you know that the poorly compressed images within the .ppt file tend to really bulk it up ...