Core Web Vitals
Track LCP, CLS, and INP with real Chrome UX Report field data — the same data Google uses for its page experience ranking signal. Monitor by device type and track improvements over time.
Without CWV Monitoring...
You're guessing about page speed instead of measuring what Google actually sees.
Page Speed Insights is manual
Running PSI one URL at a time doesn't scale. You need site-wide CWV monitoring at the domain level, not per-URL spot checks.
Lab data ≠ field data
Lighthouse scores don't match real user experience. Only CrUX field data counts for Google's ranking signal.
No historical trend tracking
CrUX shows current 28-day data only. You can't see if your optimizations actually improved performance over time.
Real-Time Vitals Dashboard
LCP, CLS, and INP with good/needs-improvement/poor distributions and trend charts.
Complete CWV Intelligence
Seven tools for monitoring and improving page experience signals.
LCP / CLS / INP from CrUX
Real field data from Chrome UX Report — the same data Google uses for its ranking signal.
Device Comparison
Compare desktop, mobile, and tablet Core Web Vitals side-by-side to find device-specific issues.
Historical Trends
Track CWV scores over weeks and months. See the impact of your optimizations over time.
Distribution Analysis
See the full histogram of good/needs-improvement/poor percentages — not just the p75 score.
Score History
Timeline showing when your CWV scores crossed thresholds, correlated with deployments and changes.
Optimization Opportunities
Identify which pages have the worst CWV and would benefit most from performance optimization.
Real Field Data
28-day rolling CrUX data reflects actual user experience — what Google measures for search rankings.
Drill into Each Metric
LCP Optimization
Identify slow-loading elements and track LCP improvements after fixes.
CLS Debugging
Find pages with layout shift issues and monitor CLS reduction over time.
INP Analysis
Track interactivity responsiveness and identify pages with slow event handlers.
Zero-Setup CWV Monitoring
Connect Your Site
CrUX data is fetched automatically for your verified domain. No extra setup or code changes needed.
Daily CrUX Sync
Our worker fetches updated CrUX histogram data daily, extracting p75 values for each metric and form factor.
Monitor Dashboards
View LCP, CLS, and INP scores with good/needs-improvement/poor breakdowns and trend charts.
Track Improvements
After deploying performance fixes, track how CWV scores improve over time with historical comparison.
CWV Thresholds
Google's official thresholds for each Core Web Vital metric.
| Metric | Good | Needs Work | Poor |
|---|---|---|---|
| LCP | ≤ 2,500ms | ≤ 4,000ms | > 4,000ms |
| CLS | ≤ 0.10 | ≤ 0.25 | > 0.25 |
| INP | ≤ 200ms | ≤ 500ms | > 500ms |
| TTFB | ≤ 800ms | ≤ 1,800ms | > 1,800ms |
Monitor Core Web Vitals for Free
Real CrUX field data, zero setup. No credit card required.