Best renaming utility

This is a fantastic renaming utility program. I thought I was going to have to spend time coding a program but found this and saved a bunch of my time. You can rename files any way you want. If you want to do something special you can use script to perform a special function, but the functions available should take care of any task if you know how to use them. I am renaming 10's of thousands of pictures and without a utility like this it would be daunting task. The online instructions are great. It took little time to figure out how to pull dates for picture, truncate the date format, and add some text to the pictures.