Largest Contentful Paint (LCP)

Further research into methods to improve the User Experience reveals other parameters that are used to measure the performance of a webpage.

SEMRush say:

Largest Contentful Paint (LCP) is a user experience (UX) metric. It’s the time it takes between the browser starting to load a page and the largest content element (image or text block) on that page appearing on the screen. LCP is one of the Core Web Vitals, a set of three metrics Google uses to measure a website’s performance in the context of UX. The other two are:

• First Input Delay (FID): how much time it takes the page to respond when a user attempts to interact with it
• Cumulative Layout Shift (CLS): a measure of how much the page layout shifts unexpectedly while the page loads