Core Web Vitals & INP Checker
Get real Interaction to Next Paint (INP), LCP, and CLS data straight from Google PageSpeed Insights — real-user field data plus a live Lighthouse lab run.
Results
Real-User Data (CrUX)
Lab Data (Simulated)
Top Opportunities
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Get AI Recommendations arrow_forwardWhy INP Matters
INP became an official Core Web Vital in March 2024, replacing First Input Delay (FID). It measures how quickly your page responds to real user interactions — clicks, taps, key presses — from input to the next visual update on screen.
Field Data (Real Users)
Sourced from the Chrome UX Report (CrUX) — actual measurements from real Chrome visitors over the past 28 days. This is what Google uses as a ranking signal. Requires a minimum traffic volume per URL to be available.
Lab Data (Simulated)
A single Lighthouse run in a controlled environment. Useful for debugging and available even when field data isn't, but it's a simulation, not a guarantee of what real visitors experience.
Frequently Asked Questions
What is INP (Interaction to Next Paint) and why does it matter for SEO?
INP measures how quickly a page responds to user interactions like clicks and taps, from input to the next visual update. It replaced First Input Delay (FID) as an official Core Web Vital in March 2024 and is part of the page experience signals Google factors into ranking.
Why is my PageSpeed Insights report missing real-user INP data for my page?
Field data comes from the Chrome UX Report (CrUX), which requires a minimum volume of real Chrome traffic per URL before it will report page-level data. Low-traffic pages often lack enough samples, so this tool falls back to whole-site (origin) CrUX data where available, or lab (simulated) data from a single Lighthouse run.