It also presents Core Web Vitals for websites with sufficient traffic, but only at the origin level. Chrome User Experience Report (CrUX) #ĬrUX is a BigQuery dataset of field data gathered from a segment of real Google Chrome users from millions of websites. While such simulations of slower network and device conditions often help draw attention to user experience problems better than native network and device conditions, they're just a single slice of the large variety in network conditions and device capabilities across a website's entire user base.Īs you continue, understand that it's not necessary for you to use all of the tools in this guide-only those that you believe will help you in improving your website's Core Web Vitals. While lab tools are invaluable, the data they provide isn't always predictive of how a website performs for real users.įor example, Lighthouse runs tests with simulated throttling in a simulated desktop or mobile environment. Collect your own field data if possible # Where it ends may depend on which of Google's tools you'll find useful in diagnosing and fixing user experience problems. Field data is also known as Real User Monitoring (RUM).Ī workflow for improving Core Web Vitals for your website will be explored in this guide, but where that workflow begins depends on whether you're collecting your own field data. Field data describes how real users actually experienced your website. Lab data describes how hypothetical users may experience your website.
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