Core Web Vitals monitoring that catches a slowdown early.
Relvato measures your Core Web Vitals — LCP, INP and CLS — in a controlled real-browser run on your key pages, and alerts you when a change pushes them past Google’s thresholds.
- ✓LCP within the ‘good’ threshold (≤ 2.5s)
- ✓INP within 200ms
- ✓CLS below 0.1
- ✓Measured per key page, desktop and mobile
Core Web Vitals are a Google ranking factor, and they slip quietly — a new hero image, a third-party script, a theme update. A lab run gives you a stable, repeatable number on every change, so you catch the regression a once-a-month audit would miss.
Works on any site — from WordPress to AI-built sites.
Lab data or real-user data — which should you trust? Our guide compares Core Web Vitals vs RUM: what each measures, when to use it, and which one Google actually ranks on.
- Loads your key pages in a real headless Chrome and measures LCP, INP (via a scripted interaction) and CLS.
- Compares each against Google’s thresholds — LCP ≤ 2.5s, INP ≤ 200ms, CLS ≤ 0.1 — on desktop and mobile.
- Re-runs on every change, so a heavy plugin or an oversized hero image is flagged before it drags your ranking.
Lab or real-user data?
This is the lab (synthetic) run — a stable, repeatable measurement. Pair it with Real-user Web Vitals (RUM) for field data from actual visitors.
Do I need a plugin?
No — the lab run works on any site with a verified domain.
Put this check on autopilot.
Free while you set it up — 100 checks or 30 days. No card, no sales call.