# Core Web Vitals checker

Rate your Largest Contentful Paint, Interaction to Next Paint and Layout Shift against Google’s thresholds.

## How it works

Each metric is good, needs work or poor. A page passes when LCP, INP and CLS are all good at the 75th percentile of real visits.

## Questions

### Do lab tests count?

Google uses real visits from Chrome users. Lab tests help find problems but aren’t the score.

### Where do I get my numbers?

From real-user monitoring in your app, or Chrome’s field data.

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