What are Core Web Vitals?
Core Web Vitals are a set of metrics developed by Google to measure user experience on web pages. They focus on three main aspects:
- Largest Contentful Paint (LCP): Measures load performance, aiming for LCP to occur within 2.5 seconds.
- Cumulative Layout Shift (CLS): Assesses visual stability, with a goal of less than 0.1.
- First Input Delay (FID): Evaluates interactivity, targeting less than 100 milliseconds.
Importance:
Google incorporates Core Web Vitals into its ranking algorithms as part of the page experience signals. Other factors include mobile friendliness, HTTPS security, and the absence of intrusive interstitials.
Optimal Values:
- LCP: Less than 2.5 seconds
- FID: Less than 100 milliseconds
- CLS: Less than 0.1
Achieving these values helps ensure a good user experience and can positively impact search engine rankings.
