Core Web Vitals

Core Web VitalsCore Web Vitals are a set of Google metrics that measure real-world user experience in the areas of loading performance, interactivity and visual stability.Open glossary entry → (CWV) are metrics from Google that capture how users actually experience the loading and responsivenessInteraction to Next Paint (INP) measures how quickly a page responds to user input across all interactions and represents interactivity.Open glossary entry → of a page. They consist of three metrics:

• LCP (Largest Contentful PaintLargest Contentful Paint (LCP) measures when the largest visible content element in the viewport has loaded, representing the perceived loading speed.Open glossary entry →) for loading performance,
• INP (Interaction to Next Paint) for interactivity,
• CLS (Cumulative Layout ShiftCumulative Layout Shift (CLS) measures how much visible elements shift unexpectedly during loading and represents the visual stability of a page.Open glossary entry →) for visual stability.

Google recommends good Core Web Vitals both for Search and for a good overall user experience. They are assessed using real user dataField data are performance measurements based on real users and their actual devices and connections. They show whether a performance problem is genuinely relevant.Open glossary entry → (field dataReal User Monitoring (RUM) captures performance and experience data from real users during their actual visit. It provides so-called field data from real-world usage.Open glossary entry →), not just a lab testLab data are produced in a simulated test environment with fixed device and network conditions. They help identify the technical causes of performance problems.Open glossary entry →. The decisive benchmark is the 75th percentileThe 75th percentile is the threshold at which at least 75 % of page views reach the good value. Core Web Vitals are assessed at this point, not at the average.Open glossary entry →: at least 75 % of page views should meet the good threshold. Core Web Vitals are part of page experience and can influence how pages perform in Google Search, but they do not replace helpful, relevant content.