Google Chrome is about to get a speed upgrade thanks to a new compression algorithm called Brotli. Google has their eyes sharply focused on the mobile browser market. Chrome on Android, which is developed by Google, has around 40 percent share of the mobile browser market, slightly ahead of Safari on iOS, which has 36 percent. If Google can help mobile users speed up page loads, that makes everyone happy.

Speed Increase

Chrome will be able to compress data up to 26 percent more than its existing compression engine, Zopfli, which is an impressive jump. Google says that Brotli is a “whole new data format” that squeezes in more data than other compression formats, while decompressing at comparable speeds.

The company is hailing Brotli as “a new data format” that Google hopes will be adopted by other web browsers in the near future, with Firefox seemingly next in line to adopt it. But for now, expect to notice your web pages loading a bit faster in the coming weeks.


  • Brotli outperforms gzip for typical web assets (e.g. css, html, js) by 17–25 %.
  • Brotli -11 density compared to gzip -9:
  • html (multi-language corpus): 25 % savings
  • js (alexa top 10k): 17 % savings
  • minified js (alexa top 10k): 17 % savings
  • css (alexa top 10k): 20 % savings

One aspect about Brotli is that it appears to be only available on websites using HTTPS connections.