Is My Page Speed Really A Problem?
Free tool · Real-user speed data
Is My Page Speed Really A Problem?
Check whether your website passes Core Web Vitals using real Chrome user data from Google's Chrome UX Report (CrUX). See your site's real mobile LCP, INP, and CLS, or find out if Google does not yet have enough real-user data to evaluate it.
What This Page Speed Checker Checks
- LCP (Largest Contentful Paint): Measures how quickly the main content becomes visible. Good is 2.5s or less, poor is over 4s.
- INP (Interaction to Next Paint): Measures how quickly the page responds to user interactions. Good is 200ms or less, poor is over 500ms.
- CLS (Cumulative Layout Shift): Measures unexpected movement of page content. Good is 0.1 or less, poor is over 0.25.
- TTFB (Time to First Byte): Shows server response time as an extra, experimental metric. It is not a Core Web Vital.
- Core Web Vitals verdict: Tells you whether your site passes, is borderline, or fails, with specific fixes for each failing metric.
- CrUX data availability: Tells you when Google does not have enough real-user data for your site.
What This Page Speed Checker Does Not Do
- Does not run a Lighthouse or lab performance test
- Does not check a single page; it reports site-wide (origin-level) data for your domain
- Does not include desktop data; results reflect real Chrome users on mobile
- Does not filter results by country; the market you select frames the verdict but does not change the data
- Does not replace PageSpeed Insights
- Does not guarantee that your site is fast for every visitor
Why Check Real-User Page Speed?
Tools such as Lighthouse and PageSpeed Insights provide lab measurements from a simulated test, while CrUX reports performance data collected from real Chrome users.
Checking real-user data helps you understand whether your website is actually meeting Core Web Vitals thresholds for visitors, and whether speed is really what is holding your site back.
How the Page Speed Reality Check Works
1. Enter Your Website
Enter your website's domain.
2. Select Your Niche and Market
Choose your niche and market so the verdict is framed for your type of business. CrUX data is global, so these choices do not change the numbers.
3. Check Your Real-User Data
The tool queries Google's Chrome UX Report (CrUX) for your site's mobile field data from the last 28 days.
4. Review Core Web Vitals
Review your LCP, INP, and CLS at the 75th percentile, plus TTFB, each rated good, needs improvement, or poor.
5. Take Action
If a metric fails, follow the fix shown for that specific metric rather than chasing a general speed score.
No CrUX Data? Here's What It Means
Your site may have no CrUX data because there is not enough real mobile Chrome traffic for Google to report on it.
No data does not mean your site is slow. It usually means speed is not your main bottleneck yet, and traffic, positioning, or content is more likely holding you back.
Once your site gets consistent visits, this check will start returning real numbers. If you want a technical baseline now, use a lab tool such as PageSpeed Insights.
Frequently Asked Questions
What is a Core Web Vitals Checker?
A Core Web Vitals Checker evaluates real-user performance data for a website and reports its LCP, INP, and CLS results against Google's thresholds.
What is CrUX?
CrUX, or the Chrome User Experience Report, is Google's dataset of real-user Chrome experience data. It provides field data about how users experience websites.
Does this tool use real user data?
Yes. It uses Chrome UX Report data from real Chrome users on mobile over the last 28 days, rather than running a simulated lab test.
Does this check a single page or my whole site?
Your whole site. The tool reports origin-level CrUX data for your domain, which combines real-user experiences across all its pages.
What are the three Core Web Vitals?
The three current Core Web Vitals are LCP, INP, and CLS. They measure loading performance, interaction responsiveness, and visual stability.
What does it mean if my site has no CrUX data?
It means Google does not have enough real mobile Chrome traffic for your site yet. It does not mean your site is slow.