Have you ever needed to create a LaTeX presentation but needed figures that only lived in a PowerPoint file? Or have you found that the only copy of a crucial figure you need lives inside a PowerPoint presentation, and when you copy it out of PowerPoint into another application it looks horrific?

This is a cool trick to extract the original (or close to original) image file from the presentation.

Open the presentation, delete all the slides you don’t need. The option is different with different versions of Powerpoint; look for “File -> Export as…” or ” “File -> Save as Web Page…”. You will get a .html (or .htm) file, and a _files directory. Inside the _files directory you will find a bunch of image files. It might take some poking around if there are lots of images on the slide, but you should find a close to original version of the image pasted into the slide.