Layout shift count and the Core Web Vitals
32.1% of audited sites (66,666) record zero lab layout shifts and reach 84% good field CLS, while 39.7% have 1 to 2 shifts (81% good CLS) and the 13.1% triggering 6 or more shifts drop to 67% good CLS.
One in three sites, 32.1%, have no layout shift count. Of the 67.9% that do, 59% use 1 to 2 layout shifts, and 81% of those sites have a good CLS, against 78% of all sites.
CLS pass rate
Sites with 1 to 2 layout shifts layout shift count have a good CLS most often: 81%, against 78% of all sites. Sites with 6+ layout shifts shift count have it least often, at 67%.
Layout shift count usage
Two in three sites uses layout shift count, and three in five of those use 1 to 2 layout shifts.
Understanding layout shift count
How repeated layout shifts erode visual stability in the field
Each unexpected layout frame during page load increments the shift count. Across 66,666 sites (32.1%) with 0 lab shifts, 84% pass field CLS, and across 82,444 sites (39.7%) with 1 to 2 shifts, 81% pass field CLS. When a page triggers 3 to 5 shifts (15.0%), good field CLS drops to 69%, and at 6 or more shifts (13.1%, 27,188 sites) good field CLS falls to 67%.
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, 32.1% record 0 shifts (84% good CLS) and 13.1% record 6 or more (67% good CLS).
How layout shift count plays out per platform
What the field data shows when you isolate a single CMS or framework.
WordPress 65,935 sites WordPress pages with 6+ lab layout shifts (14.8%) pass field CLS at 66% vs 84% with 0 shifts (18 points apart).
Across 65,935 WordPress sites, 25.8% record 0 lab shifts (84% good CLS), 44.0% record 1 to 2 shifts (81%), 15.4% record 3 to 5 shifts (69%), and 14.8% record 6+ shifts (66% good CLS).
Shopify 8,634 stores Shopify stores with 6+ lab layout shifts (8.2%) pass field CLS at 67% vs 92% with 0 shifts.
Across 8,634 Shopify storefronts, 33.7% record 0 lab shifts (92% good CLS), 42.3% record 1 to 2 shifts (87%), and 8.2% record 6 or more shifts (67% good CLS).
React & Next.js 9,658 sites 56.9% of React & Next.js sites record 0 lab layout shifts (91% good CLS vs 63% at 3 to 5 shifts).
Across 9,658 React sites, 56.9% record 0 lab shifts (91% good CLS), 27.4% record 1 to 2 shifts (80%), 9.2% record 3 to 5 shifts (63% good CLS), and 6.4% record 6+ shifts (55% good CLS).
By Arjen Karel · 212,308 crawled sites (70,213 with desktop Chrome field data, 207,524 sites with layout shift count, October 2026). How we measured.