Largest Contentful Paint (LCP) is a landmark timing based metric that reports the time at which the largest above-the-fold element was rendered.
To calculate the largest element, LCP considers the following:
In Calibre, LCP is sourced directly from Chrome browser. The browser emits this timing as part of it’s tracing. Learn more about Largest Contentful Paint in Milica Mihajlija’s post, The New Generation of Performance Metrics for Better User Experience.
|Good LCP Measurement||Poor LCP Measurement|
|≤ 2.5s||> 4s|