2016-01-21

Google Open Source Blog: Introducing Brotli: a new compression algorithm for the internet

http://google-opensource.blogspot.jp/2015/09/introducing-brotli-new-compression.html
While Zopfli is Deflate-compatible, Brotli is a whole new data format. This new format allows us to get 20–26% higher compression ratios over Zopfli.