What is Brotli?
Brotli is an open-source algorithm from Google used for compression. Originally created back in the year 2013 with
the purpose to compress web fonts offline, Brotli was eventually released in 2015 and is handled as a great
alternative to the famous GZIP compression.
As all modern browsers support Brotli by now (though only over HTTPS) there is no good reason not to use the algorithm to speed up your page as it is faster while also compressing the files better. Read more about that on the Benefits of Brotli page.