How to "clean" a JPEG

[Sezna]

I think this is sort of an interesting problem. How would one identify useless data in a JPEG file and delete it? You know, stuff that some programs may leave in there?

[Jotaf98]

Look, there is NO useless data in JPGs, they were made to be the smallest possible :)

[Sezna]

Noooo, lookit here:

http://www.pppr.sk/rainbow/programs.html#JPG Cleaner

I want to do this in VB. There are some bytes that need to be deleted and I need to know where they are. Thanks.

[parksie]

Try looking at the JFIF file specification.

[Jotaf98]

There's another way, you can try downloading that program and using it in a JPG loaded with junk. Then compare it with the original JPG, and see the differences :)

[Sezna]

I found the code I want at Planet Source Code. I know the difference in size is barely there, but it's still a nice thing to be able to do.