Thanks! And I completely agree with the idea that more programmers should have a go at working with various file formats. I learned so much about binary file layouts through this one project.

Before writing this article I had no idea that JPEGs use Huffman tables. Now all those Huffman table lectures from college algos classes make sense. I was never told in that class that this is a major use case for Huffman tables. Maybe I would have shown more interest then if I knew this fact.