First Input Delay (FID) is the time from when a user first interacts with your page to when the page responds. It measures responsiveness and is one of the ...

Largest Contentful Paint (LCP) is the amount of time it takes to load the single largest visible element in the viewport. It represents the website being ...

Cumulative Layout Shift (CLS) measures the visual stability of a page as it loads. It does this by looking at how big elements are and how far they move. ...