RenameFiles

RenameFiles is an easy-to-use application designed to rename batches of files as fast as possible while remaining light on system resources consumption. It has a preset for renaming only images from a specified directory.

Needs .NET Framework to work properly

The program's wrapped into a single .exe file that you can save anywhere on the computer or copy to a USB flash drive to run it on any workstation with little effort.
The app doesn't update the Windows registry with new entries or generate files on the disk without letting you know about it. However, it cannot run unless you have .NET Framework installed (modern Windows versions have it by default).

Accessible interface for file renaming operations

The interface of RenameFiles is plain and uncomplicated. It's based on a single window that displays all options available, so you don't have to depend on multiple panels to search for buttons.
You can get started by typing the path of the folder whose containing files you want to take into account for the renaming procedure or by using the tree view instead.

Rename files using three-digit numbers

The application is capable of replacing the current names with new characters you set as the base names (lowercase and uppercase letters, numbers, symbols), accompanied by numbers made out of exactly three digits. The figures are appended to the base name without spacing.
It lets you set the starting value for automatic incrementation (by 1). Worth noting is that the task cannot run without a base name, while a number made out of one, two, four or more digits shall be disregarded and replaced by three digits.

Find and replace keywords in images only

Another file renaming mode allows RenameFiles to find specific keywords and replace it with anything else you enter, preserving the rest of the original file names.
As previously mentioned, the utility has a preset that restricts it to rename only images, leaving files of other content types untouched. Unfortunately, it's not explicit concerning the supported graphic formats. We've noticed that it works with BMP, JPG, GIF, PNG and TIF, but not with EMF or WMF.

Straightforward and approachable file renamer

File renaming jobs were carried out fast in our testing while RenameFiles remained light on CPU and RAM consumption. The only time it showed an error dialog was when attempting to run tasks using any other character types instead of numbers as the starting value for incrementation. The tool is speedy, practical and easy to use by anyone.