Core Web Vitals · AuditJet Glossary
CrUX (Chrome UX Report)
A public dataset of real user experience data collected by Chrome from opted-in Chrome users across millions of websites.
CrUX (Chrome UX Report) is the data source behind Google's field data in PageSpeed Insights, Search Console's Core Web Vitals report, and Google's ranking signal for page experience. CrUX data is aggregated in 28-day rolling windows and represents actual user experience rather than lab conditions. CrUX provides URL-level and origin-level data for LCP, CLS, INP, FCP, and TTFB.
Related terms
The time from page navigation start until the largest image or text block visible in the viewport has finished rendering.
A measure of the largest burst of layout shift scores for every unexpected layout shift that occurs during the entire lifespan of a page.
A Core Web Vital that assesses overall responsiveness by observing the latency of all qualifying interactions throughout the entire page lifecycle and reporting the worst-case value.
Core Web Vitals measurements collected from real users visiting a website in production — as opposed to lab data from controlled test environments.
Core Web Vitals measurements collected in a controlled environment using specified device and network conditions — as opposed to field data from real users.
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AuditJet tracks Core Web Vitals on a schedule with revenue impact alerts.
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