Glossary
Core Web Vitals
Google's three measures of how a page feels to a real visitor.
What it is
Core Web Vitals are LCP, INP and CLS: does the page appear quickly, does it respond when touched, does it stay still. Google publishes a threshold for each and reports them from field data.
Why it costs you money
They are a ranking signal, but the reason to care is simpler: they describe the experience your customers are having on the templates that make you money.
How to check it yourself
Read them per page group in Search Console rather than as a site average — a store usually passes on the homepage and fails on product pages, and the average hides that.
Where this matters