Loading speed LCP
Largest Contentful Paint | LCP
Loading speed is measured by Largest Contentful Paint (LCP), the metric reporting the render time of the largest image or text block visible within the first viewport. Learn more.
First Input Delay | FID
Interactivity is measured by First Input Delay (FID), the metric reporting the time from when a user interacts with a page, such as tapping a button, to when the browser is able to process that event. Learn more.
Visual stability CLS
Cumulative Layout Shift | CLS
Visual stability is measured by Cumulative Layout Shift (CLS), the metric reporting the layout shift scores during the lifespan of a page. Each time a visible element changes its position unexpectedly, the page's layout shift score worsens. Learn more.