Short:    Mass-renaming of file suffixes
Author:   James L Boyd
Uploader: jamesboyd@velvety.demon.co.uk
Type:     util/dir

Sufferer renames lots of files at a time (or rather,their
extensions).

Handy for making your JPEGs drawer more uniform, for example :

BEFORE :

    blahblah.jpeg
    beepboop.jpg
    boopbeep.jfif

AFTER : 

    blahblah.jpg
    beepboop.jpg
    boopbeep.jpg

Of course, you can use it for any type of file, and use
your own extensions...!

Read the docs for a couple of "quirks" though ;)
.