Core Web Vitals are three scores Google uses to measure how fast and stable your site feels to real visitors - how quickly it loads, how soon you can interact with it, and how much it jumps around while loading.
Also known as: CWV, LCP, INP, CLS, page experience
In plain English
Core Web Vitals are Google's three official speed-and-stability metrics: LCP (loading - how fast the main content appears), INP (interactivity - how quickly the page responds to taps/clicks), and CLS (visual stability - whether things jump around while loading).
Why it matters for your business
They're a confirmed Google ranking factor and, more importantly, a direct measure of user experience - slow, jumpy pages lose visitors regardless of rankings. They're also what "page experience" in Search Console reports on.
When you'll run into it
When auditing site speed, after performance changes, or when Search Console flags issues. Fixes typically involve images, caching, hosting, and script weight.
Run into this on your site?
Speed Optimization