Long Animation Frame work and the Core Web Vitals

Sites with 80 to 130ms of LoAF work Long Animation Frame work have a good INP most often: 99%, against 99% of all sites. Sites with over 250ms of LoAF work LoAF duration have it least often, at 98%.

80 to 130ms of LoAF work is the most used: 30.2% of sites.

On WordPress, 30% of sites use 130 to 250ms of LoAF work Long Animation Frame work, and 100% of WordPress sites have a good INP, against 99% of all sites. On Shopify, 29% of sites use 80 to 130ms of LoAF work, and 99% of Shopify sites have a good INP.

PlatformLong Animation Frame work on its sitesGood INP

Sites with Long Animation Frame work 182,326 sites80 to 130ms LoAF work 30%130 to 250ms LoAF work 26%Under 80ms LoAF work 24%Over 250ms LoAF work 20%99%

Adobe Commerce 1,076 sites130 to 250ms LoAF work 30%Over 250ms LoAF work 29%80 to 130ms LoAF work 24%Under 80ms LoAF work 17%100%

Wix 3,994 sitesUnder 80ms LoAF work 51%80 to 130ms LoAF work 30%130 to 250ms LoAF work 13%100%

Squarespace 2,210 sites80 to 130ms LoAF work 31%Under 80ms LoAF work 28%Over 250ms LoAF work 22%130 to 250ms LoAF work 20%100%

Joomla 2,481 sites130 to 250ms LoAF work 34%80 to 130ms LoAF work 28%Over 250ms LoAF work 24%Under 80ms LoAF work 15%100%

Drupal 3,112 sites80 to 130ms LoAF work 32%Under 80ms LoAF work 25%130 to 250ms LoAF work 24%Over 250ms LoAF work 19%100%

WordPress 63,911 sites130 to 250ms LoAF work 30%80 to 130ms LoAF work 27%Over 250ms LoAF work 26%Under 80ms LoAF work 17%100%

Shopify 8,277 sites80 to 130ms LoAF work 29%Under 80ms LoAF work 28%130 to 250ms LoAF work 24%Over 250ms LoAF work 19%99%

80 to 130ms LoAF work 130 to 250ms LoAF work Under 80ms LoAF work Over 250ms LoAF work

Does the platform explain the Long Animation Frame work difference?

On WordPress, 100% of sites with 80 to 130ms of LoAF work Long Animation Frame work have a good INP, against 100% of WordPress sites with 130 to 250ms of LoAF work. Within WordPress, sites with 80 to 130ms of LoAF work and 130 to 250ms of LoAF work have a good INP about equally often. On Shopify, 100% of sites with 80 to 130ms of LoAF work Long Animation Frame work have a good INP, against 100% of Shopify sites with 130 to 250ms of LoAF work. Within Shopify, sites with 80 to 130ms of LoAF work and 130 to 250ms of LoAF work have a good INP about equally often.

Why Long Animation Frames pinpoint real INP bottlenecks

Unlike classic Long Tasks, the Long Animation Frames API captures the full rendering update alongside script execution, exposing forced synchronous reflows and expensive style recalculations. Across 44,281 sites (24.3%) with under 80ms of LoAF work, 99% pass field INP at an 48ms median, compared with 98% (53ms median) on the 19.8% (36,117) exceeding 250ms.