Core Web Vitals
Core Web Vitals are 3 Google measurements of how a page feels to use: how fast the main content appears, how quickly it responds, and how much it jumps around while loading.
The 3 are Largest Contentful Paint, Interaction to Next Paint, and Cumulative Layout Shift.
Google's targets are under 2.5 seconds, under 200 milliseconds, and under 0.1 respectively.
They're measured on real visits from real people, rather than in a lab on your office wifi.
Google says its ranking systems use them, and also that it always seeks to show the most relevant content, even when the page experience is weaker.
They pay off in enquiries too, because a page that holds still while someone reaches for the call button gets the call.
Right-sized images and lean third-party scripts fix most of the slow pages I see.
What this means for you
Worth fixing because visitors feel it, and worth keeping in proportion as a ranking lever, so I build for strong content and fast pages together.
This one sits under Web design.
Related terms
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