ImTOO File Rename is an advanced utility that lets you rename your files in many different ways. The first thing that you have to do to start renaming files with this app is load them onto the application. You can do this easily by dragging and dropping, or you can access the "Open" dialog from the button at the bottom of the screen. Once your files are loaded, you will see their original name, a preview of what the name will look like after renaming, the path the files are located on and the type of the file. There are six different types of changes that you can make to your files' names: case, delete, insert, move, order and replace. You can select the type of renaming operation on the left side of the options pane, and the renaming options will appear on the right. Unfortunately, you can only apply one type of operation at the time. For example, in the Case options, you will find uppercase, uppercase in the first letter, uppercase after a set string of text, lowercase, and capitalize each word. When you are ready setting the options, you can start the process by clicking on the "Save" button at the bottom of the screen.
In my testing, I renamed 15 image files. I did different things to them, like renaming the files to lowercase letters, inserting a string of text to the names and numbering the files in order. There are quite a few options available for each type of operation.