Editor: Change extension is a SendTo folder utility for your windows computer. Have you ever had some file the you need to change the extension on. Just select the files you want to change or remove the extension on. Right click and seled Send to and ChangeExt.
You could also start the change ext program and select the file in the file selector dialog.
Change Extension utility can be used when
you want to send a file that isn't allowed by you email provider
you want another program to open a specific file
you want to the remove the extension, or add an extension