Core Web Vitals are a set of user-centered metrics that measure key aspects of website performance, such as page load time, interactivity, and visual stability. These metrics are designed to help website owners and developers optimize their sites for a better user experience. The three Core Web Vitals are:
- Largest Contentful Paint (LCP): measures loading performance.
- First Input Delay (FID): measures interactivity.
- Cumulative Layout Shift (CLS): measures visual stability.
Google has indicated that Core Web Vitals will become an important ranking factor in their search algorithm in 2021, making it crucial for website owners to focus on improving these metrics for better user experience and search engine visibility.