在 Twitter 上看到有人提到 curl 支援 Brotli 了：「HTTP: implement Brotli content encoding」。
Brotli 對文字系列的資料比較有幫助 (像是 html)：
Unlike most general purpose compression algorithms, Brotli uses a pre-defined 120 kilobyte dictionary, in addition to the dynamically populated ("sliding window") dictionary. The pre-defined dictionary contains over 13000 common words, phrases and other substrings derived from a large corpus of text and HTML documents. Using a pre-defined dictionary has been shown to increase compression where a file mostly contains commonly-used words.
現在還在 master 裡面，之後的 release 版本應該就會支援了...