I used to use ThumbsPlus for batch processing. I love Phatch, but I don't know if it can do this: I want to take a directory of pics and resize all to say 640x480 for web use. I want all these to be saved with the original filename but with a "sm" suffix (or whatever). Then I want to make another batch of smaller thumbnail size ones that have something like a "th" suffix.
ThumbsPlus does it. Can Phatch do this?
I run Linux and have done some Python programming, so if I have to I could maybe make something if necessary.