[themerone]

This works by text substitution, I imagine that you could get similar or better gains using zstd custom dictionaries.

[seccode]

This is a direct comparison to zstd with a dictionary actually

[seccode]

Methodology for comparison: train zstd dictionary on enwik9. Then build my dictionary as most common words in enwik9. Mine does 13% better because of the way I discovered how you can generate dictionary replacement symbols