Core Web Vitals for business owners

Core Web Vitals sound like an engineering problem, but they're really a business one. They measure how your site feels to a real person — and Google, and your customers, both care about the answer.

Why this matters to your bottom line

A slow site loses money twice. First, visitors leave before they convert — every extra second of load time measurably drops conversion. Second, Google uses these metrics as a ranking signal, so a sluggish site is harder to find in the first place. Speed is one of the few improvements that helps acquisition and conversion at the same time.

The three metrics, in plain English

LCP — does it load quickly?

Largest Contentful Paint measures how long until the main content appears. Aim for under 2.5 seconds. If your hero image or headline takes four seconds to show up, that's an LCP problem.

INP — does it respond quickly?

Interaction to Next Paint measures how fast the page reacts when someone taps or clicks. Aim for under 200 milliseconds. Buttons that feel laggy are an INP problem.

CLS — does it stay still?

Cumulative Layout Shift measures how much the page jumps around as it loads. Aim for under 0.1. If you've ever tried to tap a button and an ad shoved it out of the way, you've felt bad CLS.

“Users don't measure your site in milliseconds — they measure it in patience. Core Web Vitals just put a number on it.”

How to know if you have a problem

You don't need to be technical to check. A few free tools tell you exactly where you stand:

• PageSpeed Insights — paste your URL for a graded report with specific fixes.
• Google Search Console — its Core Web Vitals report shows real-user data across your whole site.
• Your own phone — load your site on mobile data and count. If it feels slow, it is.

What good looks like

Green scores across LCP, INP, and CLS on mobile — where most of your traffic is — is the goal. Getting there is usually a mix of image optimization, smarter loading, and cleaning up third-party scripts. None of it is glamorous, but the payoff shows up in both your rankings and your revenue.

If your report is showing red and you're not sure where to start, a technical SEO audit will turn it into a prioritized list — quick wins first.