Critical Largest Contentful Paint
What this means
Measured LCP is above 4 seconds — the band Google classifies as poor. LCP is when the page's largest visible element finishes rendering.
How to fix it
Preload the hero image or the element that becomes LCP, serve it in a modern format at the right size, and cut server response time.
Fix effort
This check needs a developer fix: it turns on a routing, hosting or infrastructure decision that no automatic edit can make safely.
Authoritative source
Find every page this affects
CrawlX runs this check — and 161 others — across your whole site, ranks the findings by estimated impact, and opens the fixable ones as pull requests. Free for 500 URLs.