Yup. PNG is 1, if JPEG were a 10 on the complexity scale (which it isn't, it is pretty simple on the absolute scale). You can understand PNG if you know a bit a

Yup. PNG is 1, if JPEG were a 10 on the complexity scale (which it isn't, it is pretty simple on the absolute scale). You can understand PNG if you know a bit about algorithms, but you need a tiny bit more than high-school math to really grok JPEG. Lossless encoding can be far simpler to understand (in some cases it's not, see FLAC).