The Chrome User Experience Report (also known as the Chrome UX Report, or CrUX for short) is a dataset that reflects how real-world Chrome users experience popular destinations on the web.
CrUX is the official dataset of the Web Vitals program. All user-centric Core Web Vitals metrics are represented.
CrUX data is collected from real browsers around the world, based on certain browser options which determine user eligibility . A set of dimensions and metrics are collected which allow site owners to determine how users experience their sites.
The data collected by CrUX is available publicly through a number of Google tools and third-party tools and is used by Google Search to inform the page experience ranking factor .
Not all origins or pages are represented in the dataset. There are separate eligibility criteria for origins and pages , primarily that they must be publicly discoverable and there must be a large enough number of visitors in order to create a statistically significant dataset.
