Long animation frames performance entriesLimited availability
A long-animation-frame performance entry measures rendering updates that take longer than 50 milliseconds. Also known as LoAFs.
Not yet supported in all major browsers — check the table and provide a fallback.
Browser support
DesktopChrome
1–122Not supported
123+Supportedsince Mar 19, 2024
Current: 155Edge
12–122Not supported
123+Supportedsince Mar 22, 2024
Current: 154Firefox
✕Not supportedup to 157
Current: 157Safari
✕Not supportedup to 27
Current: 27MobileChrome Android
18–122Not supported
123+Supportedsince Mar 19, 2024
Current: 155Firefox Android
✕Not supportedup to 157
Current: 157Safari iOS
✕Not supportedup to 27
Current: 27How to use
Not supported in Firefox, Safari, Firefox Android, Safari iOS. Use feature detection below and provide a fallback (or a polyfill) for those browsers.
Example
Full syntax and examples are on MDN: PerformanceLongAnimationFrameTiming.
Feature detection
JS · check before using
if ("PerformanceLongAnimationFrameTiming" in globalThis) {
// PerformanceLongAnimationFrameTiming is available
} else {
// load a polyfill or use a fallback
}Sub-features
Support for each part of the feature (19). The overall table above shows when the whole feature works.