Core Web Vitals
Monitoring
Track your Core Web Vitals (CLS, LCP, INP), TTFB, and PageSpeed scores using Google's official APIs. Get instant alerts when your page experience degrades and fix performance issues before they hurt your SEO rankings.
No credit card required
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Don't Let Poor Core Web Vitals Kill Your SEO Rankings
Google uses Core Web Vitals as a ranking factor. Poor page experience scores can hurt your search visibility and cost you valuable organic traffic. We monitor these metrics using Google's official PageSpeed Insights and Chrome UX Report APIs.
of websites fail Core Web Vitals
(Chrome User Experience Report)
traffic loss from poor page experience
(Google studies on page experience)
max INP for good responsiveness
(Replaced FID as Core Web Vital)
Monitor Your Core Web Vitals in 3 Simple Steps
Add Your Critical Pages
Enter your most important pages - homepage, landing pages, product pages - any page that drives traffic and conversions.
Real User Data Collection
We measure LCP, INP, CLS, TTFB using Google's PageSpeed Insights and Chrome UX Report APIs. Get reliable data even for low-traffic sites.
Performance Alerts & Insights
Get instant alerts when Core Web Vitals degrade. Fix performance issues before they impact your SEO rankings.
Complete Core Web Vitals Monitoring Solution
Professional monitoring tools to track, analyze, and optimize your Core Web Vitals for better SEO performance.
Monitor LCP, INP, CLS, TTFB & PageSpeed Score
Track Core Web Vitals, server response times, and PageSpeed scores using Google's PageSpeed Insights and Chrome UX Report APIs. For high-traffic sites, get real user data. For smaller sites, get reliable synthetic testing data plus TTFB measurements.
- Largest Contentful Paint (LCP) tracking
- Interaction to Next Paint (INP) measurement
- Cumulative Layout Shift (CLS) detection
- Time to First Byte (TTFB) for server performance
- Overall PageSpeed score tracking
Track Core Web Vitals Over Time
Monitor performance trends and identify patterns in your Core Web Vitals. See how code deployments and changes affect your page experience scores.
- Historical performance data
- Performance regression detection
Instant Performance Degradation Alerts
Get immediate notifications when Core Web Vitals scores degrade. Fix performance issues before they impact your search rankings and user experience.
- Email alerts for performance regressions
- Slack integration for team notifications
- Customizable alert thresholds
Perfect for SEO-Critical Websites
E-commerce Websites
Monitor product pages, checkout flows, and category pages. Ensure fast loading times don't hurt your conversion rates.
Content & Publishing
Track blog posts, articles, and landing pages. Maintain fast page speeds to preserve your organic search rankings.
SaaS & Web Applications
Monitor application performance and user experience. Keep Core Web Vitals optimized for better user retention.
Why Choose PageRadar Over Google PageSpeed Insights?
PageRadar 🏆
Continuous monitoring
Google PageSpeed Insights
Manual testing only
Other Monitoring Tools
Expensive enterprise solutions
Simple pricing
Start Monitoring Your Core Web Vitals Today
Protect your SEO rankings with continuous Core Web Vitals monitoring. No credit card required. Cancel anytime.
FAQ
Core Web Vitals Monitoring Questions
Everything you need to know about tracking your page experience metrics.
Core Web Vitals are three key metrics that measure user experience: LCP (loading), FID (interactivity), and CLS (visual stability). Google uses these metrics as ranking factors, making them crucial for SEO performance and user satisfaction.
PageSpeed Insights only provides manual, one-time testing. PageRadar continuously monitors your Core Web Vitals 24/7 with real user data, sends alerts when performance degrades, and tracks trends over time so you can spot issues before they hurt your rankings.
We use Google's official PageSpeed Insights API and Chrome User Experience Report (CrUX) API to gather data. For high-traffic websites (10,000+ monthly visitors), you'll get real user field data from Chrome users. For smaller sites, you'll receive reliable synthetic testing data plus always-available TTFB measurements to check server performance.
For good user experience, aim for: LCP under 2.5 seconds, INP under 200 milliseconds (replaced FID in 2024), CLS under 0.1, and TTFB under 600ms for server performance. Google considers these thresholds when evaluating page experience for search rankings.
We fetch fresh data from Google's APIs every hour using automated monitoring. For sites with sufficient traffic in Chrome User Experience Report, you get real field data. For smaller sites, we provide synthetic testing data from PageSpeed Insights plus TTFB measurements to track server performance trends.
Yes! You can set custom thresholds for each metric and receive instant email or Slack notifications when your Core Web Vitals scores degrade. This helps you fix issues before they impact your SEO rankings.
Our plans include 100 to 500 page monitors depending on your subscription level. Each monitor tracks Core Web Vitals (LCP, INP, CLS), TTFB, and PageSpeed score for one URL. You can monitor unlimited websites on all plans.
No. We don't use any tracking scripts on your website. Instead, we fetch data directly from Google's PageSpeed Insights and Chrome User Experience Report APIs using server-side requests, so there's zero impact on your site's performance.
Currently we focus on monitoring and alerting. For optimization recommendations, we suggest using Google PageSpeed Insights or Lighthouse alongside our monitoring to track improvements over time after implementing their suggestions.
We're developing a REST API that will allow you to programmatically access your Core Web Vitals data and integrate it into your performance monitoring workflow. Contact us for early access information.