So I was using windows backup to backup my files. However, when I recently had to format my computer, windows backup wouldn't recognize my backup. Which would be fine, but it puts a timestamp at the end of each filename. Which breaks the game saves that I had in that backup (which is the part that I really care about). So I was able to use this program to all at once slice off the last 26 characters from all of my files, restoring them to their original names. This program just saved 300gb of data. So thank you.
And it goes without saying that I'm never using windows backup again.