Core Vitals Web
Core Web Vitals are a set of specific metrics defined by Google to measure key aspects of user experience on a web page.
These metrics include:
- Largest Contentful Paint (LCP): measures the time it takes for the largest content element visible in the viewport to load.
- First Input Delay (FID): measures the time between a user's first interaction with the page and the moment the browser responds to that interaction.
- Cumulative Layout Shift (CLS): measures visual stability and quantifies how much the page layout shifts unexpectedly during loading.