Improving compression with a preset DEFLATE dictionary

What this post added

This post explores the use of preset DEFLATE dictionaries to improve compression ratios for common HTML content. It details the DEFLATE algorithm's LZ77 stage and Huffman encoding, explains the limitations of SDCH for multi-domain scenarios, and presents an experiment where a custom dictionary was built from scanned HTML pages to achieve better compression. The experiment showed a ~25% improvement in compression rate for a test set of pages.