Core Web Vitals & PageSpeed Auditor

Free Core Web Vitals Audit Tool

Measure your website's LCP, CLS, and INP metrics using live Google PageSpeed Insights field data.

Try sample:

Core Web Vitals Metrics Analyzed

Largest Contentful Paint (LCP)

Good: ≤ 2.5s

Measures loading performance. Checks when the main page content has likely loaded.

Interaction to Next Paint (INP)

Good: ≤ 200ms

Measures visual responsiveness to user input (taps, clicks, key presses).

Cumulative Layout Shift (CLS)

Good: ≤ 0.1

Measures visual stability. Prevents unexpected layout shifts while page loads.

Frequently Asked Questions

Are Core Web Vitals a direct Google ranking signal?

Yes. Google officially made Core Web Vitals part of its page experience ranking signals in 2021. Fast, stable sites get a ranking boost in mobile and desktop search results.

Where does SiteScore get Core Web Vitals data?

We query Google's PageSpeed Insights API to pull actual Chrome User Experience Report (CrUX) field data from real real-world user visits.