Cumulative Layout Shift (CLS)
Cumulative Layout Shift (CLS) measures visual stability by tracking how much page elements unexpectedly move as a page loads. Lower scores mean less shifting, creating a better user experience. CLS is one of Google’s Core Web Vitals that affects your search ranking. Reducing CLS by properly sizing images, reserving space for ads, and using fixed-size elements helps prevent frustrating experiences where users accidentally click the wrong things.
See also: Core Web Vitals, Largest Contentful Paint (LCP)
