JPEG Generation Loss

As most of you are probably aware, the reason why JPEG are usually smaller than other types of images is because it uses a "lossy" compression method that discards small bits of information (though there's also lossless Jpeg, but that's another matter.)

That's why you should always keep an original jpeg image when you plan to edit it, because each time you save it, reopen it, and save it again, the image will lose more and more details.

Well, here's a video that better shows what I mean. Opening and saving the same image... 600 times in a row.


Generation Loss from hadto on Vimeo.