Free Core Web Vitals test
Test a page's Core Web Vitals — loading (LCP), visual stability (CLS) and interactivity (INP) — using Google's PageSpeed data. These affect both rankings and conversions.
The three metrics
LCP measures how fast the main content appears (aim under 2.5s), CLS measures unexpected layout shifts (under 0.1), INP measures responsiveness (under 200ms). A performance score bundles them.
Why it matters
Core Web Vitals are a confirmed Google page-experience signal and a real driver of bounce rate. Every second of delay measurably cuts conversion.
Track it over time
A one-off score is a snapshot. Sitefolio trends performance on a schedule and catches the deploy or plugin that quietly tanked it.
Frequently asked questions
Do Core Web Vitals affect SEO?
Yes — they're a confirmed page-experience ranking signal, and they affect conversions directly.
Why does the score differ between tests?
Lab tests vary with conditions. Trending scores over time is the reliable way to spot regressions.
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