If you have a photo in jpeg format and you reduce its dimensions through Microsoft Paint and then save it, the size of the file doesn't reduce at all. But if you save it as a new file, it does. Why? This is very annoying because I'm trying to reduce the size of some photos to download them to the Internet and it seems I will have to go through each photo and save it as a new one. Is there any way that I can reduce the size of a jpeg file without creating a copy of it?