Free Core Web Vitals Checker — Test LCP, CLS, INP in One Click
Test all three Core Web Vitals — LCP, CLS, and INP — on any URL in one click. Get scores, element attribution, and specific fix recommendations.
Free — no account required for a single check. Sign up for continuous monitoring →
What the Core Web Vitals Checker checks
LCP score and element
CLS score and shift sources
INP estimate via TBT
FCP score
Speed Index
Overall performance score
How it works
Runs a complete Lighthouse analysis using mobile CPU throttling and 4G network simulation — identical to Google's PageSpeed Insights methodology.
Monitor continuously — not just once
This free tool runs a one-off check. AuditJet monitors your site on a schedule — alerting you when scores change, before performance regressions affect your rankings and revenue.
Core Web Vitals Checker — FAQ
Is the Core Web Vitals Checker free?
Yes — Core Web Vitals Checker is completely free to use. No account required for a single-URL check.
How does the Core Web Vitals Checker work?
Runs a complete Lighthouse analysis using mobile CPU throttling and 4G network simulation — identical to Google's PageSpeed Insights methodology.
What does the Core Web Vitals Checker check?
LCP score and element. CLS score and shift sources. INP estimate via TBT. FCP score. Speed Index. Overall performance score.
How is this different from Google PageSpeed Insights?
Google PageSpeed Insights is a one-off manual tool. AuditJet adds continuous monitoring, regression alerting, and revenue impact on top of the same performance analysis — so you're notified when scores change, not just when you remember to check.