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Core Web Vitals are three measures of page experience: loading (largest contentful paint, LCP), responsiveness (interaction to next paint, INP) and visual stability (cumulative layout shift, CLS). Google's targets are an LCP of 2.5 seconds or less, an INP under 200 milliseconds and a CLS under 0.1.
In short
The measures come from real visits, so a page can pass in a lab test and still fail for real users on slow phones. Check them in Search Console's Core Web Vitals report and in PageSpeed Insights. Good scores help readers first, and they remove a source of friction for search as well. In Search Console, look at the data for your own visitors, such as those in the United States and Canada, because phones and connections differ by region.
Compress and size images, load only the code a page needs, reserve space for images and ads so the layout does not jump, and keep scripts from blocking taps. Source: web.dev, Web Vitals, read 9 November 2026.
These checks are part of our technical SEO service.
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