RegToy – File Renamer

Renaming a couple of files is not a problem; select the file to be renamed click F2 and you are good to go, but when it comes renaming dozens of files, it becomes really burdensome. That's where comes RegToy FileRenamer for our help. It's a small but powerful program with lots of features.

RegToy FileRenamer is an advanced renamer tool for Windows. Some of its capabilities:

Batch file rename, full name, name without extension, rename just the extension, replace some characters, case renaming (all in lower case, upper case, random case, sentence case, tOOgLE case), substring (at beginning, at ending, at position; lenght), remove (at beginning, at ending, at position; lenght), reverse.

If you have multiple files needed renaming this is just the tool you need.
RegToy - Disk Cleaner
Batch file to replace file extensions
How to quickly replace the file extensions of several files