Core Web Vitals in plain English

Core Web Vitals are three simple checks: how quickly the main content loads (LCP), how stable the layout is (CLS), and how quickly the page responds (INP). Sites that pass all three feel calm and fast; sites that fail feel janky and slow.

For small businesses, the practical implications are straightforward: use properly sized images, avoid heavy third-party scripts, and prefer static, server-rendered content where possible.

You don't need to memorise the metrics. Just insist that whoever builds your site tests on a real mid-range phone, not just their laptop.