Largest layout shift score on Wix sites

Sites with a largest shift under 0.01 largest single layout shift score have a good CLS most often: 98%, against 98% of all Wix sites. Sites with a largest shift over 0.25 largest shift have it least often, at 90%.

A largest shift under 0.01 is the most used: 52.0% of Wix sites.

React sets the largest single layout shift score to a largest shift under 0.01 on 52% of its sites, and 98% of React sites have a good CLS, against 98% of all sites.

FrameworkLargest single layout shift score on its sitesGood CLS

Wix sites with largest single layout shift score 1,049 sitesUnder 0.01 (Imperceptible) 52%0.01 to 0.10 (Within Good budget) 33%Over 0.25 (Poor in one jump) 11%98%

React 1,048 sitesUnder 0.01 (Imperceptible) 52%0.01 to 0.10 (Within Good budget) 33%Over 0.25 (Poor in one jump) 11%98%

Under 0.01 (Imperceptible) 0.01 to 0.10 (Within Good budget) Over 0.25 (Poor in one jump) 0.10 to 0.25 (Needs Improvement)

Does the framework explain the largest single layout shift score difference?

On React, 98% of sites with a largest shift under 0.01 largest single layout shift score have a good CLS, against 96% of React sites with a largest shift of 0.01 to 0.10. Within React, sites with a largest shift under 0.01 and a largest shift of 0.01 to 0.10 have a good CLS about equally often.

When a single layout jump blows the entire 0.10 CLS budget

Google's Good CLS threshold is 0.10. Across 546 shifting sites (52.0%) whose largest single shift stays below 0.01, 98% pass field CLS, and across 346 sites (33.0%) at 0.01 to 0.10, 96% pass. Once a single jump lands between 0.10 and 0.25 (4.4%), good field CLS drops to 98%, and when a single shift exceeds 0.25 (10.6%, 111 sites), only 90% pass field CLS.