NameWiz is a fast and easy way to rename files en masse. Select any group of files in a folder and do what you want: change the file extension, make all names lower/upper case, replace or delete characters, add prefixes and suffixes, or replace the names altogether with sequential names of your choosing. It is particularly useful for managing graphics files downloaded from the Internet or saved from your browser's cache. It can also be useful for programmers or for those who create sequential versions of text files, etc.