JPEG

I saved a 1x1 white pixel jpeg at highest compression with photoshop and it ended up being 8KB. After opening it up with a hex editor I was able to get rid of 7KB of extraneous junk. So is there a way to get photoshop not to add crap? or is there a program out there that will remove this stuff by the batches?

There's probably an operating system to run that application on, but if you Google for theory and architecture specs you can find enough info to code your own.