PowerPoint 2007 saves presentations as Web pages, converting files to HTML with a single step. PowerPoint 2010 disabled this function, but it saves presentations as images which you can embed using ...

Microsoft Publisher features tools to help your business design and distribute marketing materials and other documents. By default, Publisher saves all of the files it creates in the PUB file format.

There's a lot to learn about image files on the command line, from verifying file format to finding out where and when photos were taken and maybe even getting an unusual view of what they look like.