Interesting comparing the sizes of different compressors. `gzip -9` gets to 374K, whereas you report zopfli taking it down to 357K. And I had at first run `bro

Interesting comparing the sizes of different compressors. `gzip -9` gets to 374K, whereas you report zopfli taking it down to 357K. And I had at first run `brotli -9`, being fairly confident in my memory that it had more than nine levels, but finding -h mentioning -# as 1–9, and not seeing --best (level 11) at the other end of the output, and that that’s the default (unlike gzip where I think the default is mostly 6), so that -9 actually makes it do a worse job. Sigh.