Whether it’s changing file names of pictures from “IMG_XXXX.jpg” to organizing your MP3s, batch file renaming can both save you time and reduce frustration. Here are two free ways to rename large groups of files in OS X.

Whether it’s changing file names of pictures from “IMG_XXXX.jpg” to organizing your MP3s, batch file renaming can both save you time and reduce frustration. Here are two free ways to rename large groups of files in OS X.