Core Web Vitals - Crash Course

(Largest Contentful Paint - LCP): LCP measures how quickly the largest content element on a web page becomes visible to the user. It is a critical metric related to the initial loading speed of a page. Faster LCP times mean that users can see and interact with the content sooner, leading to a better user experience.

(First Input Delay - FID): FID focuses on the responsiveness of a web page. It measures the delay between a user's interaction (e.g., clicking a button) and the browser's response to that interaction. A low FID indicates that the site is responsive and interactive, improving the overall user experience.

(Cumulative Layout Shift - CLS): CLS addresses the visual stability of a web page. It measures how much the content layout shifts unexpectedly during page loading or interaction. A low CLS score means that the page elements remain stable, preventing frustrating and unexpected layout shifts for users.