Web Open Font Format (WOFF) 2.0https://github.com/google/woff2
Web Open Font Format (WOFF) 2.0 is an update to the existing WOFF 1.0 with
improved compression that is achieved by using the Brotli algorithm. The primary
purpose of the WOFF2 format is to efficiently package fonts linked to Web
documents by means of CSS @font-face rules.