Core Web Vitals Explained for Business Owners (Not Developers)
These three metrics show up constantly in SEO and audit reports, and they're usually explained in a way that assumes you already know what they mean. Here's the plain version.
LCP: Largest Contentful Paint
How long it takes for the biggest visible element on the page, usually a hero image or headline, to finish loading. This is your visitor's "did this page actually load" moment. Google considers 2.5 seconds or under good; anything past 4 seconds is a real problem.
INP: Interaction to Next Paint
How responsive the page feels when someone actually clicks or taps something. A button that takes half a second to visibly respond to a tap feels broken, even if it eventually works. This is the metric most connected to "why did that visitor tap Submit three times."
CLS: Cumulative Layout Shift
How much content jumps around while the page is loading. An ad or image that loads late and pushes the button you were about to tap somewhere else, that's a CLS problem, and it's a common cause of accidental clicks and mis-taps.
Why these matter beyond a Search Console warning
All three feed directly into Google's ranking signals, but more importantly, they're a reasonable proxy for how a real visitor experiences your site. A site that scores well on all three tends to also convert better, independent of any SEO benefit, because it simply feels more trustworthy and usable.
Where to check your own scores
Google's PageSpeed Insights (free) shows both lab data and real-world field data from actual visitors. The field data matters more, it reflects real devices and real network conditions, not a single idealized test run. A full Website Speed Audit goes further, tracing each metric back to its actual cause on your specific site.