The State of Web Vitals

Layout shift count on React sites

57.2% of audited sites (5,477) record zero lab layout shifts and reach 97% good field CLS, while 27.1% have 1 to 2 shifts (92% good CLS) and the 6.4% triggering 6 or more shifts drop to 75% good CLS.

Field data PhoneDesktopAll Scope All sites October 2026 edition · All devices field outcomes · React sites only
React Scoped to 9,570 sites out of 210,902 analyzed (frameworks) Compare with all sites →

57.2% of React sites have no layout shift count. Of the 42.8% that do, 63% use 1 to 2 layout shifts, and 92% of those sites have a good CLS, against 92% of all React sites.

The State of Web Vitals · October 2026 · React: 9,570 crawled sites · 9,110 with all devices field dataBy Arjen Karel · corewebvitals.io/state-of-cwv
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CLS pass rate

Sites with 1 to 2 layout shifts layout shift count have a good CLS most often: 92%, against 92% of all React sites. Sites with 3 to 5 layout shifts shift count have it least often, at 71%.

SitesGood, needs improvement, poor CLSMedian
All React sites9,11092%0.00
0 layout shifts 57.2%5,19397%0.00
1 to 2 layout shifts 27.1%2,47192%0.00
6+ layout shifts 6.4%58375%0.02
3 to 5 layout shifts 9.3%86371%0.03
GoodNeeds improvementPoorSites: with Chrome field data
The State of Web Vitals · October 2026 · React: 9,570 crawled sites · 9,110 with all devices field dataBy Arjen Karel · corewebvitals.io/state-of-cwv
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Layout shift count usage

42.8% of React sites use layout shift count, and 63% of those use 1 to 2 layout shifts.

All React sites 9,570 sites
0 layout shifts 57.2% Layout shift count 42.8%
Sites with layout shift count 4,093 sites
1 to 2 layout shifts 63.4% 3 to 5 layout shifts 21.6% 6+ layout shifts 15.0%
1 to 2 layout shifts 63.4% 3 to 5 layout shifts 21.6% 6+ layout shifts 15.0%
The State of Web Vitals · October 2026 · React: 9,570 crawled sites · 9,110 with all devices field dataBy Arjen Karel · corewebvitals.io/state-of-cwv
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Layout shift count per platform

On Wix, 79% of sites use 0 layout shifts layout shift count, and 98% of Wix sites have a good CLS, against 92% of all sites. On WordPress, 42% of sites use 1 to 2 layout shifts, and 85% of WordPress sites have a good CLS.

PlatformLayout shift count on its sitesGood CLS
All React sites 9,570 sites0 layout shifts 57%1 to 2 layout shifts 27%92%
Wix 5,824 sites0 layout shifts 79%1 to 2 layout shifts 18%98%
WordPress 2,342 sites1 to 2 layout shifts 42%0 layout shifts 24%3 to 5 layout shifts 19%6+ layout shifts 15%85%
0 layout shifts 1 to 2 layout shifts 3 to 5 layout shifts 6+ layout shifts
The State of Web Vitals · October 2026 · React: 9,570 crawled sites · 9,110 with all devices field dataBy Arjen Karel · corewebvitals.io/state-of-cwv
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Layout shift count or the platform

Does the platform explain the layout shift count difference?

On Wix, 98% of sites with 1 to 2 layout shifts layout shift count have a good CLS, against 98% of Wix sites with 0 layout shifts. Within Wix, sites with 1 to 2 layout shifts and 0 layout shifts have a good CLS about equally often. On WordPress, 91% of sites with 1 to 2 layout shifts layout shift count have a good CLS, against 91% of WordPress sites with 0 layout shifts. Within WordPress, sites with 1 to 2 layout shifts and 0 layout shifts have a good CLS about equally often.

How repeated layout shifts erode visual stability in the field

Each unexpected layout frame during page load increments the shift count. Across 5,477 sites (57.2%) with 0 lab shifts, 97% pass field CLS, and across 2,595 sites (27.1%) with 1 to 2 shifts, 92% pass field CLS. When a page triggers 3 to 5 shifts (9.3%), good field CLS drops to 71%, and at 6 or more shifts (6.4%, 612 sites) good field CLS falls to 75%.

The State of Web Vitals · October 2026 · React: 9,570 crawled sites · 9,110 with all devices field dataBy Arjen Karel · corewebvitals.io/state-of-cwv
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Understanding layout shift count

Eliminate sequential layout jumps by setting explicit width and height on every image and iframe, pre-allocating fixed height for top announcement bars, and matching fallback font metrics. Across all audited sites, 57.2% record 0 shifts (97% good CLS) and 6.4% record 6 or more (75% good CLS).

Go fix it Scroll-triggered animations cause CLS → Layout shift caused by CSS transitions → Identify and fix CLS →
The State of Web Vitals · October 2026 · React: 9,570 crawled sites · 9,110 with all devices field dataBy Arjen Karel · corewebvitals.io/state-of-cwv
Related signals What shifted → Shift direction → Largest single shift → Shift concentration → By Arjen Karel · 9,570 crawled React sites (9,110 with all devices Chrome field data, October 2026) · How we measured