Here’s A Detailed Walk Through Of How JPEG Compression Works

Understanding the science behind JPEG compression might not be on everyone’s agenda. In fact, it probably sounds incredibly boring, if not complicated to a lot of folks. But, in this 12-minute long clip, image analyst Mike Pound guides you through the entire process as he explains the magic of Discrete Cosine Transform (DCT)–using language that’s easy to follow. If you’ve been meaning to learn more about what happens to your images when you save them as JPEG, there’s no better time than the present.

[ via Reddit ]