The State of Web Vitals

WordPress synthetic interaction sub-parts and the Core Web Vitals

26.4% of audited sites (12,951) complete synthetic interactions in under 35ms (100% good field INP, 47ms median), while the 23.2% exceeding 110ms reach 52ms median field INP (100% good INP).

Field data PhoneDesktopAll Scope All sites October 2026 edition · Desktop field outcomes · WordPress sites only
WordPress Scoped to 63,295 sites out of 203,892 analyzed (cms) Compare with all sites →

26.8% of WordPress sites use 65 to 110ms lab interaction duration synthetic interaction sub-parts, and 100% of those sites have a good INP, against 100% of all WordPress sites.

The State of Web Vitals · October 2026 · WordPress: 63,295 crawled sites · 17,005 with desktop field data · 49,004 sites with synthetic interaction sub-partsBy Arjen Karel · corewebvitals.io/state-of-cwv
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INP pass rate

Sites with 65 to 110ms lab interaction duration synthetic interaction sub-parts have a good INP most often: 100%, against 100% of all WordPress sites. Sites with 35 to 65ms lab interaction duration lab interaction time have it least often, at 99%.

SitesGood, needs improvement, poor INPMedian
All WordPress sites17,005100%48ms
65 to 110ms lab interaction 26.8%3,564100%50ms
Under 35ms lab interaction 26.4%3,424100%47ms
Over 110ms lab interaction 23.2%3,355100%52ms
35 to 65ms lab interaction 23.5%2,99199%48ms
GoodNeeds improvementPoorSites: with Chrome field data
The State of Web Vitals · October 2026 · WordPress: 63,295 crawled sites · 17,005 with desktop field data · 49,004 sites with synthetic interaction sub-partsBy Arjen Karel · corewebvitals.io/state-of-cwv
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Synthetic interaction sub-parts usage

65 to 110ms lab interaction duration is the most used: 26.8% of WordPress sites.

65 to 110ms lab interaction 26.8% Under 35ms lab interaction 26.4% 35 to 65ms lab interaction 23.5% Over 110ms lab interaction 23.2%
65 to 110ms lab interaction 26.8% Under 35ms lab interaction 26.4% 35 to 65ms lab interaction 23.5% Over 110ms lab interaction 23.2%
The State of Web Vitals · October 2026 · WordPress: 63,295 crawled sites · 17,005 with desktop field data · 49,004 sites with synthetic interaction sub-partsBy Arjen Karel · corewebvitals.io/state-of-cwv
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Synthetic interaction sub-parts per framework

On jQuery, 27% of sites use 65 to 110ms lab interaction duration synthetic interaction sub-parts, and 100% of jQuery sites have a good INP, against 100% of all sites. On Vue, 32% of sites use 65 to 110ms lab interaction duration, and 99% of Vue sites have a good INP.

FrameworkSynthetic interaction sub-parts on its sitesGood INP
WordPress sites with synthetic interaction sub-parts 49,004 sites65 to 110ms lab interaction 27%Under 35ms lab interaction 26%35 to 65ms lab interaction 24%Over 110ms lab interaction 23%100%
jQuery 47,207 sites65 to 110ms lab interaction 27%Under 35ms lab interaction 26%Over 110ms lab interaction 24%35 to 65ms lab interaction 23%100%
React 1,799 sitesOver 110ms lab interaction 29%65 to 110ms lab interaction 26%Under 35ms lab interaction 24%35 to 65ms lab interaction 22%100%
Vue 4,345 sites65 to 110ms lab interaction 32%35 to 65ms lab interaction 28%Under 35ms lab interaction 21%Over 110ms lab interaction 19%99%
Alpine 300 sites65 to 110ms lab interaction 29%Under 35ms lab interaction 27%35 to 65ms lab interaction 25%Over 110ms lab interaction 19%99%
65 to 110ms lab interaction Under 35ms lab interaction 35 to 65ms lab interaction Over 110ms lab interaction
The State of Web Vitals · October 2026 · WordPress: 63,295 crawled sites · 17,005 with desktop field data · 49,004 sites with synthetic interaction sub-partsBy Arjen Karel · corewebvitals.io/state-of-cwv
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Synthetic interaction sub-parts or the framework

Does the framework explain the synthetic interaction sub-parts difference?

On jQuery, 100% of sites with 65 to 110ms lab interaction duration synthetic interaction sub-parts have a good INP, against 100% of jQuery sites with under 35ms lab interaction duration. Within jQuery, sites with 65 to 110ms lab interaction duration and under 35ms lab interaction duration have a good INP about equally often. On Vue, 100% of sites with 65 to 110ms lab interaction duration synthetic interaction sub-parts have a good INP, against 100% of Vue sites with under 35ms lab interaction duration. Within Vue, sites with 65 to 110ms lab interaction duration and under 35ms lab interaction duration have a good INP about equally often.

How input delay, processing, and presentation add up

Every user tap or click waits for background main-thread tasks to finish (input delay), runs event callbacks (processing), and recalculates styles and paints the next frame (presentation). Across 12,951 sites (26.4%) under 35ms in lab interactions, 100% pass field INP at an 47ms median, versus 100% (52ms median) on the 23.2% (11,392) exceeding 110ms.

The State of Web Vitals · October 2026 · WordPress: 63,295 crawled sites · 17,005 with desktop field data · 49,004 sites with synthetic interaction sub-partsBy Arjen Karel · corewebvitals.io/state-of-cwv
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Understanding synthetic interaction sub-parts

Keep click and menu toggle handlers lean and defer analytics or DOM-heavy work out of the interaction frame. On WordPress, 26.4% of sites finish lab interactions under 35ms (47ms median field INP) while 23.2% exceed 110ms (52ms median field INP).

Go fix it INP: input delay → INP: processing time → INP: presentation delay →
The State of Web Vitals · October 2026 · WordPress: 63,295 crawled sites · 17,005 with desktop field data · 49,004 sites with synthetic interaction sub-partsBy Arjen Karel · corewebvitals.io/state-of-cwv
Related signals CSS hints → Scheduling API use → Interaction invoker types → Yielding strategy → By Arjen Karel · 63,295 crawled WordPress sites (17,005 with desktop Chrome field data, 49,004 sites with synthetic interaction sub-parts, October 2026) · How we measured