ElementTiming for img

The ElementTiming API will allow developers to know when certain important image elements are first displayed on the screen. It will also enable analytics providers to measure the display time of images that take up a large fraction of the viewport when they first show up.

Documentation

https://docs.google.com/document/d/1blFeMVdqxB0V3BAJh60ptOBFY7cJSXnf7VyW3wspbZ8/edit

Status in Chromium

Blink components: Blink>PerformanceAPIs

Enabled by default (tracking bug) in:

Chrome for desktop release 77
Chrome for Android release 77

Consensus & Standardization

After a feature ships in Chrome, the values listed here are not guaranteed to be up to date.

Firefox: No public signals
Edge: No public signals
Safari: No public signals
Web Developers: Positive

Owners

npm@chromium.org
tdresser@chromium.org

Last updated on 2019-08-15