Largest Contentful Paint (LCP) measures the time it takes for the largest visible element on a webpage, such as an image or video, to load. LCP is a key metric in Google’s Core Web Vitals, affecting page load performance and search rankings.

Optimizing LCP improves user experience and reduces bounce rates. For advertisers, faster LCP times mean ads load quickly and engage users sooner, increasing the likelihood of interaction and positive user experience.