The purpose of this program is to allow you to easily and comfortably rename a large number of files according to a specified template in seconds. The file name designer makes using the program easy and clear. The comfortable interface allows you to easily configure renaming rules that can then be saved as a template. Rapid File Renamer allows you to fix the letter case of filenames or remove characters from them and add a counter or date. The program can independently process both filenames and their extensions. Other program features include: processing subfolders renaming files based on how they are sorted previewing new filenames undoing changes and a warning display when working with important system folders. Therefore by using the program a task can be completed in seconds that would normally require a lot of time and effort.