When people foolishly use Powerpoint to resize their images instead of an image editor the file size gets really big.

I have to go through and resize loads of images in loads of presentations.

This software resizes the images in your powerpoint presentation to reduce the file size.
http://www.rdpslides.com/pptools/FAQ00013.htm

Unfortunately it costs $100.

Anyone know of a free version?

Anyone want to WRITE a free version