Renamer is a utility that helps you batch rename files within your Mac. The program is packed with multiple renaming profiles, supports drag-and-drop actions and batch processing, and immediately completes any given task without slowing down your computer.
All you need to do is to drag-and-drop the files you wish to rename over the program's interface, choose the preferred output profile (you can alter the profile settings if needed), and click the "Apply" button. A great aspect is that you can preview the new file names before launching the renaming process.
Another advantage is that you can always undo file renaming actions. Plus, you can create and save your own output profiles for using on a different set of files.
The only thing you need to take into consideration is the fact that you can find cheaper solutions. However, they don't provide you with as many features as Renamer and only a few are as intuitive as this program.
In conclusion, Renamer might be the utility for you if you're looking for a feature-rich and efficient file renaming program.