If a Data Saver user is on a 2G-speed or slower network according to the NetInfo API, Chrome disables scripts and sends an intervention header on every resource request. Users are shown a Lite Mode UI in the omnibox. Users can enable scripts on the page by tapping “Show original” in the omnibox UI. An intervention report is sent when this optimization occurs.

Documentation

• https://wicg.github.io/netinfo/#dfn-effective-connection-types
• https://developers.google.com/web/updates/2018/09/reportingapi
• https://www.w3.org/TR/reporting/#intervention-report

Specification

Specification link

Status: Specification being incubated in a Community Group

Status in Chromium

Blink components: Blink

Implementation status: Enabled by default (tracking bug)

Consensus & Standardization

• Firefox: No signal
• Safari: No signal
• Web Developers: No signals

Owners

• dougarnett@chromium.org
• bengr@chromium.org
• aposner@chromium.org

Comments

This feature is enabled only on Android browser by default.

Last updated on 2021-12-21