First Paint Timing API

API to enable developers to measure time for First Paint (FP) & First Contentful Paint (FCP) -- the first key moments in loading that they care about. These moments are added as 'paint' entries in the Performance Timing API.

Comments

`performance.getEntriesByType('paint').forEach(entry => console.log(entry.name, entry.startTime))`

Documentation

• https://developer.mozilla.org/en-US/docs/Web/API/PerformancePaintTiming
• https://developers.google.com/web/updates/2017/07/nic60#paint

Specification

Editor's draft

Status in Chromium

Blink components: Blink>PerformanceAPIs

Enabled by default (tracking bug) in:

• Chrome for desktop release 60
• Chrome for Android release 60
• Android WebView release 60
• Opera release 47
• Opera for Android release 47

Consensus & Standardization

• Firefox: No public signals
• Edge: Public support
• Safari: Public support
• Web Developers: Positive

Owner

• panicker@chromium.org

Last updated on 2017-11-27