Largest Contentful Paint (LCP)

Measures the perceived load speed by marking when the first large chunk of content is displayed.

The Largest Contentful Paint (LCP) metric measures the time from when the page first starts loading to when the largest chunk of the content is displayed. This is likely when the user perceives the page to be loaded, even if additional resources continue to load in the background. To improve LCP, website developers should focus on having a fast server response and reducing the sizes of images, CSS and Javascript.

The scores we use come from a Google Lighthouse report and represent the 28 day average score for the homepage as measured by real users using Chrome. Websites should aim for an LCP of less than 2.5 seconds. Anything over 4 seconds is considered to be poor.

For more information, please read the documentation on Web.dev.