Originally Posted by MarshyTheKid
How can I change all of the extensions? I have some files that have no extension but they're all picture files.
i use a program called IrfanView... it has batch conversion and rename outions... so you should be able to get it to add the extension to the files and preserving the file names.
if you dont care for the file names, then do what clickwir posted and add the extension to the end