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

Motivation

Developers should be informed of the time at which key elements of their website are first rendered. Usually this means images and/or text. Text is important for news websites, articles of online encyclopedias, email providers, etc. First contentful paint is insufficient because it is triggered with almost any element.

Documentation

Specification

Specification link


Specification being incubated in a Community Group

Status in Chromium

Blink>PerformanceAPIs


Enabled by default (tracking bug)

Consensus & Standardization

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

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Owners

Last updated on 2021-03-12