Core Web Vitals checker. Field data, not a guess.
LCP, INP, CLS, FCP and TTFB for any URL — the same metrics Google uses for page-experience ranking — plus a prioritised fix list for whatever's failing.
Core Web Vitals are a Google ranking factor and a conversion lever.
Field data first
We pull real Chrome UX Report data from actual visitors on your site over the last 28 days whenever it exists — the same data Google's Search Console uses. If your site doesn't have enough traffic for field data yet, we fall back to a simulated lab run.
Every metric that counts
Largest Contentful Paint, Interaction to Next Paint, Cumulative Layout Shift, First Contentful Paint and Time to First Byte — each rated good, needs-improvement or poor against Google's published thresholds.
Fixes, not just numbers
A slow LCP or a janky CLS score is useless without next steps. We turn failing metrics into a prioritised, plain-language list of what to change first.
Want it fixed, not just measured?
Our senior engineers fix Core Web Vitals for a living — hero image strategy, script loading order, layout-shift prevention and edge caching. Bring us your report.