Data Saver is an optional feature in Chrome. When activated, HTTP traffic will go through Google's proxy servers that will reduce traffic by compressing and optimizing data. By default, the connection to Google proxy servers is over HTTP/2 and encrypted. If the URL http://check.googlezip.net/connect is blocked, the connection to the proxy servers will be over HTTP/1.1 and unencrypted. HTTPS and traffic generated from Incognito mode won't be proxied. Data Saver can be activated in Chrome's settings on Android or through a Chrome extension on PC. Data Saver is not available on iOS.