Long Animation Frame work on Wix sites
5.6% of audited sites (218) record over 250ms of work inside Long Animation Frames, pushing median field INP to 95ms (92% good INP) versus 78ms (97% good INP) under 80ms.
30.3% of Wix sites use 80 to 130ms of LoAF work Long Animation Frame work, and 97% of those sites have a good INP, against 96% of all Wix sites.
INP pass rate
Sites with 80 to 130ms of LoAF work Long Animation Frame work have a good INP most often: 97%, against 96% of all Wix sites. Sites with 130 to 250ms of LoAF work LoAF duration have it least often, at 95%.
Long Animation Frame work usage
Under 80ms of LoAF work is the most used: 51.4% of Wix sites. 80 to 130ms of LoAF work is 30.3% of Wix sites.
Long Animation Frame work per framework
On React, 51% of sites use under 80ms of LoAF work Long Animation Frame work, and 96% of React sites have a good INP, against 96% of all sites.
Long Animation Frame work or the framework
Does the framework explain the Long Animation Frame work difference?
On React, 97% of sites with 80 to 130ms of LoAF work Long Animation Frame work have a good INP, against 97% of React sites with under 80ms of LoAF work. Within React, sites with 80 to 130ms of LoAF work and under 80ms 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 1,996 sites (51.4%) with under 80ms of LoAF work, 97% pass field INP at an 78ms median, compared with 92% (95ms median) on the 5.6% (218) exceeding 250ms.
Understanding Long Animation Frame work
Eliminate synchronous layout reads after DOM writes (forced reflows) and break long script evaluation tasks into smaller chunks. Across all audited sites, 51.4% stay under 80ms of LoAF work (97% good INP, 78ms median) versus 5.6% above 250ms (92% good INP, 95ms median).
By Arjen Karel · 5,621 crawled Wix sites (3,077 with phone Chrome field data, 3,884 sites with Long Animation Frame work, October 2026). How we measured.