Core Web Vitals Checker

Track LCP, CLS and INP — the real-world metrics Google ranks you on.

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Core Web Vitals are the three metrics Google uses to score the real-world experience of your pages: how fast the main content appears (LCP), how stable the layout is as it loads (CLS), and how quickly the page responds when someone interacts (INP). They are part of how Google ranks you — and unlike a lab speed test, they reflect what visitors actually feel. A Core Web Vitals checker measures all three so you know exactly where you stand.

What it checks

Largest Contentful Paint (LCP) — how long until the main content renders
Cumulative Layout Shift (CLS) — how much the page jumps around as it loads
Interaction to Next Paint (INP) — how responsive the page feels to clicks and taps
Each metric graded good / needs improvement / poor against Google's thresholds
Regressions over time, so a deploy that hurts your scores gets caught

Why it matters

Core Web Vitals are a confirmed Google ranking signal and a direct proxy for user experience — slow, shifting or unresponsive pages lose both rankings and conversions. Because the scores move with every deploy and content change, a one-off test goes stale fast. Measuring them continuously turns a vague "the site feels slow" into specific, fixable numbers.

How BrandSentryPro does it

Add your site and BrandSentryPro measures your Core Web Vitals on a schedule, grades each metric against Google's thresholds, and shows which one is dragging your score down. When a change pushes a metric into the red, you get alerted instead of finding out from a rankings drop.

Frequently asked questions

What are Core Web Vitals?

Core Web Vitals are three metrics Google uses to measure page experience: Largest Contentful Paint (loading), Cumulative Layout Shift (visual stability) and Interaction to Next Paint (responsiveness). Together they reflect how a real visitor experiences your page.

What is a good Core Web Vitals score?

Google's "good" thresholds are an LCP under 2.5 seconds, a CLS under 0.1, and an INP under 200 milliseconds. A checker grades each metric against these so you can see which pass and which need work.

Do Core Web Vitals affect SEO?

Yes. They are a confirmed part of Google's page-experience ranking signals. Improving them helps rankings and, because they track real user experience, also reduces bounce rate and improves conversions.