Core Web Vitals test
Enter a page address and see its three Core Web Vitals, taken from real Chrome visitors where Google has them, marked against Google’s published thresholds.
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- Nothing stored
Free tool · Core Web Vitals test
Test a page’s Core Web Vitals
Put in any page address. The test asks Google for that page’s loading, responsiveness and layout figures and marks each against Google’s own thresholds. It takes up to 30 seconds.
Figures come from Google’s PageSpeed Insights. Thresholds are Google’s: good is LCP ≤ 2.5 s, INP ≤ 200 ms and CLS ≤ 0.1. The address you enter is sent to Google to run the test; nothing is stored here.
Free tool · Core Web Vitals reader
Is your page fast enough by Google’s own standard?
Run a real page (not just the homepage) through PageSpeed Insights and copy the three numbers from “Discover what your real users are experiencing”.
- Enter any of the three numbers.
Thresholds from Google’s web.dev: good is LCP ≤ 2.5 s, INP ≤ 200 ms, CLS ≤ 0.1; poor is above 4 s, 500 ms and 0.25. Measured at the 75th percentile of real visits.
The three measures
LCP: loading
How long the main content takes to appear. Good is 2.5 seconds or less.
INP: responsiveness
How quickly the page reacts when someone taps or clicks. Good is 200 milliseconds or less.
CLS: stability
How much the layout jumps about as it loads. Good is 0.1 or less.
Sources: web.dev: Defining the Core Web Vitals thresholds · Google: Understanding Core Web Vitals and Google search results
02 Questions
What people ask
Where do I get my numbers?
The test above fetches them from Google for any page. For a whole site, the Core Web Vitals report in Search Console groups pages by status.
What does the reader underneath do?
It’s for figures you already have, from Search Console or a report someone sent you. Type them in and it marks each against the same thresholds.
Do Core Web Vitals affect rankings?
Google says they’re used by its ranking systems, but relevance comes first. Passing won’t rescue a weak page.
More free tools
— Next step
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- 01The main things holding your site back, in plain English
- 02Which of them are worth fixing first
- 03Whether a full audit or a monthly plan makes sense, or neither