The Chrome UX Report (CrUX) is a publicly available dataset including real-world user experience data from millions of websites. It assesses the field versions of all Core Web Vitals. CrUX data, as opposed to lab data, originates from opted-in users in the field. Developers may utilize this data to study the distribution of real-world user experiences on their own or rivals’ websites. Even if your site does not have RUM, CrUX can give a quick and straightforward approach to analyze your Core Web Vitals. The CrUX dataset on BigQuery contains fine-grained performance statistics for all Core Web Vitals and is available in monthly origin-level snapshots.
The only way to properly understand how your site works for your users is to evaluate its performance in the field as those people load and engage with it. This form of assessment is known as Real User Monitoring (or RUM for short). Even if you don’t have RUM on your site, CrUX can give a quick and easy approach to analyze your Core Web Vitals.
The CrUX API
The CrUX API is a simple and free method to incorporate origin and URL-level quality monitoring into your development workflows for the following field metrics:
- Largest Contentful Paint
- Cumulative Layout Shift
- First Input Delay
- First Contentful Paint
Developers may search for an origin or URL and filter the results based on several form factors. The API is updated daily and summarises data from the past 28 days (unlike the BigQuery dataset, which is aggregated monthly). The API is likewise subject to the same relaxed public API quotas as our other API, the PageSpeed Insights API (25,000 requests per day).
CrUX Dashboard Redesign
The newly updated CrUX Dashboard enables you to quickly follow an origin’s performance over time, and it can now be used to monitor the distributions of all Core Web Vitals indicators. Check out our web.dev guide to getting started with the dashboard.
To make it even simpler to assess how your site is working at a glance, a new Core Web Vitals landing page is offered. We appreciate your input on all CrUX tools; to express your ideas and questions, please contact us through the @ChromeUXReport
Twitter account or the Google Group.