User blog comment:Flex217/Just pointing this out.../@comment-4018164-20111202171250/@comment-4500149-20111203024702

When you save an image in JPG format, the image is compressed so it takes up less space. This was useful on older computers when saving a picture onto maybe a floppy disk (since those things could hold barely anything anyway) or something, but now it's just obsolete. When the image is compressed, it usually results in the pixels getting all "scrambled" and stuff and looking really bad. It's almost as if someone has taken the airbrush in Paint and sprayed it around your picture to make it look worse. If you'd like to see what I'm talking about, go here. Do you get on YouTube often? The next time you get on, try comparing a 240p video to a 720p HD video. That's like the difference between a JPG and a PNG. Well, at least for me it is. :P Lol, just use PNG from now on. That format is so much better.