I have a number of digital photos that I have accidently formatted to a PDD format. I really need to change them back to a JPEG file. Anyone help please
However, you obviously have a program on your PC which can convert jpegs to pdds. I'd be surprised if it can't do the same job in reverse. (Try checking the help file).
While you're at it, go to http://www.irfanview.com/ and download the Irfanview program and the plugins. This image viewer/editor is one of the most comprehensive available, and it is completely FREE.
It will do batch conversions and even basic photo enhancing. I've used it for years and there are not many formats it won't open (with the plugins).