Core Web Vitals

Core Web Vitals is a set of web performance metrics that Google introduced in 2020 to capture how quickly a page loads, how fast it responds to input and how visually stable it is. It consists of Largest Contentful Paint (LCP), which measures when the main content renders; Cumulative Layout Shift (CLS), which measures unexpected movement of page elements; and Interaction to Next Paint (INP), which measures responsiveness to user input.

The metrics are usually assessed at the 75th percentile (p75) of real visitor data, and Google Search uses them as part of its page experience signals. Web developers widely use them as targets for performance work and as a baseline for detecting regressions.

This entry is based on AIPOST articles and widely known facts. If something is wrong, please send us a correction request.