PS File Renamer

Geared toward all types of users, PS File Renamer is an advanced utility that enables you to rename multiple files in batch mode based on rules. It supports filters and character replacement, among other practical options.

Installer, prerequisites, and interface

The setup operation is a speedy task that shouldn't give you any trouble, thanks to the fact that there are no special settings or third-party components involved. However, .NET Framework must be installed, since it was built with the help of this platform.
PS File Renamer is wrapped in a user-friendly interface represented by a standard window with a clear-cut structure, where you can get started by indicating the folder whose containing files you want to rename.

Change file names and extensions

It's possible to filter files by format, change their extensions via numerical incrementation or custom, leave extensions untouched, as well as edit the file names or leave them unchanged.
The program is capable of replacing part of the file name with any other characters you enter. All modifications can be applied with one click. Afterward, you can open the destination directory to examine results.
Unfortunately, the tool doesn't implement options for previewing the new names or for undoing changes. Therefore, there's a chance you may end up modifying the file names and extensions into something you don't like. In this case, it's probably wise to create backups prior to using this application, or to at least create a list with the original file names and types.

Evaluation and conclusion

Tasks were carried out quickly in our tests, during which the utility needed a low amount of system resources to work properly, so it didn't hamper the computer's performance. It remained stable throughout its runtime and didn't stop responding to commands at any point.
To sum it up, PS File Renamer offers a speedy solution and useful settings to change multiple file names and extensions at the same time. It's intuitive and free to use. On the other hand, it doesn't have expert options for more experienced users.