Free LCP Checker — Test Largest Contentful Paint Instantly
Enter any URL to measure your Largest Contentful Paint score in seconds. Get the LCP element, render time, and specific fixes to improve your score.
Free — no account required for a single check. Sign up for continuous monitoring →
What the LCP Checker checks
LCP render time in ms
LCP element identification
LCP score (Good/Needs Improvement/Poor)
Resource causing LCP delay
Optimization opportunities
How it works
Runs a Lighthouse analysis on your URL using mobile throttling and 4G network simulation — the same conditions Google uses for Core Web Vitals scoring.
Monitor continuously — not just once
This free tool runs a one-off check. AuditJet monitors your site on a schedule — alerting you when scores change, before performance regressions affect your rankings and revenue.
LCP Checker — FAQ
Is the LCP Checker free?
Yes — LCP Checker is completely free to use. No account required for a single-URL check.
How does the LCP Checker work?
Runs a Lighthouse analysis on your URL using mobile throttling and 4G network simulation — the same conditions Google uses for Core Web Vitals scoring.
What does the LCP Checker check?
LCP render time in ms. LCP element identification. LCP score (Good/Needs Improvement/Poor). Resource causing LCP delay. Optimization opportunities.
How is this different from Google PageSpeed Insights?
Google PageSpeed Insights is a one-off manual tool. AuditJet adds continuous monitoring, regression alerting, and revenue impact on top of the same performance analysis — so you're notified when scores change, not just when you remember to check.