Core Web Vitals are a set of metrics that are used to measure the performance and user experience of a website. They were introduced by Google in 2021 as part of an effort to improve the overall quality of the web, and are designed to help website owners and developers identify and address issues that may impact the performance and user experience of their websites.
The Core Web Vitals include three key metrics:
Largest Contentful Paint (LCP): This metric measures the time it takes for the largest content element on a webpage (such as an image or video) to load. A good LCP score is typically under 2.5 seconds.
First Input Delay (FID): This metric measures the time it takes for a webpage to become interactive, or for a user to be able to interact with the page. A good FID score is typically under 100 milliseconds.
Cumulative Layout Shift (CLS): This metric measures the stability of a webpage, or the amount of unexpected layout shifts that occur while a page is loading. A good CLS score is typically under 0.1.
In addition to these Core Web Vitals, Google also considers a number of other factors when evaluating the performance and user experience of a website, such as the speed at which a page loads and the use of mobile-friendly design.
Website owners and developers can use tools such as the PageSpeed Insights tool and the Search Console to measure and monitor their Core Web Vitals and to identify opportunities for improvement. Improving the Core Web Vitals of a website can help to improve its performance and user experience, and may also have an impact on its ranking in search results.
In conclusion, Core Web Vitals are a set of metrics that are used to measure the performance and user