Largest Contentful Paint (LCP)

Largest Contentful Paint (LCP) is the most heavily weighted Core Web Vitals metric, measuring the exact time it takes for the single largest element in the viewport (usually a hero image, video, or massive text block) to fully render on the screen. Google mandates an LCP of 2.5 seconds or faster to achieve a “Good” score. Failing LCP is the most common technical reason websites lose algorithmic tie-breakers. Achieving a passing score requires aggressive intervention: preloading the LCP asset, deferring all render-blocking CSS and JavaScript, and utilizing next-generation image formats served through a global CDN.

Largest Contentful Paint (LCP) Simplified

LCP is Google’s measurement of how long it takes for the biggest image or block of text on your webpage to fully load. If the main banner image takes four seconds to appear, users will leave, and Google will penalize your rankings for being too slow.