What are core web vitals in Google search console?
The Core Web Vitals are a set of metrics related to speed, responsiveness, and visual stability, to help site owners measure user experience on the web.
The Core Web Vitals report shows how your pages perform, based on real world usage data (sometimes called field data). You can read more about this initiative on the Google Search Central blog. Longer page load times have a severe effect on bounce rates.
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Core Web Vitals are a set of specific factors that Google considers important in a webpage's overall user experience. Core Web Vitals are made up of three specific page speed and user interaction measurements: largest contentful paint, first input delay, and cumulative layout shift.