The Importance Of Core Web Vitals Monitoring

Ella Pybus | 30 May, 2025 | 4 minute read | Blog, SEO

Wondering why Core Web Vitals monitoring matters? Here’s the deal — if your site is slow or annoying to use, visitors won’t stick around. It really is that simple.

When they leave, they don’t convert, buy, or come back. That’s where Core Web Vitals monitoring comes in. 

Core Web Vitals are a group of performance metrics from Google that reflect how real users experience your website. Think of core web vitals metrics as a health check for how quickly and smoothly your site loads and responds. 

If you want visitors engaged in your site, understanding and monitoring these metrics isn’t optional; it’s essential for addressing performance issues.

In this blog, we’ll explain core web vitals, why they matter, and how regular monitoring helps you stay ahead of your competitors. 

What are Core Web Vitals and why do they matter? 

So, what are the Core Web Vitals? They focus on three main things: loading performance, interactivity, and visual stability. 

A good Core Web Vitals score means your site feels smooth, fast, and easy. A poor score? Frustrated users who bounce quickly. 

For a good user experience, we recommend ensuring that the Largest Contentful Paint (LCP) happens within 2.5 seconds of the page starting to load, and that the Cumulative Layout Shift (CLS) remains below 0.1.

Read our recent blog to discover how to audit core web vitals.

Poor Core Web Vitals = Lost conversions  

When your site takes long to load or shifts around as it renders, people notice – and not in a good way. 

Every extra second your site makes someone wait increases the chance they’ll give up and go elsewhere. In fact, research shows that just a one-second delay in page load time can cause conversion rates to drop by up to 20%. That’s a fifth of your potential sales or leads – gone, just like that. 

It’s not just about user patience. Slow, unstable pages erode trust. If your site feels clunky or unreliable, visitors are far less likely to hand over their money, details, or time.

The quality of your user experience directly affects your bottom line. Fast, stable sites makes people stay longer, engage more, and convert better, 

Want to learn more? Check out our beginner’s guide to improving site speed and performance.

Why ongoing Core Web Vitals monitoring is crucial 

Fixing Core Web Vitals once and forgetting about them doesn’t work. Websites change, user behaviour shifts, algorithms update, plugins alter, and many other things change.

That’s why monitoring is just as important as improving.

With the right tools, you can track performance trends over time, spot issues early, and keep things optimised. Think of it as regular maintenance on your car – ignore it, and it’ll eventually break. 

How to make Core Web Vitals part of your SEO routine 

Improving Core Web Vitals isn’t a one-time task, it’s about building and enhancing with algorithm changes. 

It’s a good idea to set a time each month to review your site’s performance. Even 30 minutes can make a difference. 

Learn how to audit core web vitals, then use Google Search Console to track real user data and see where your site might be slipping. 

Run PageSpeed Insights to uncover quick wins and common issues.

For more detailed checks, tools like Lighthouse and the Web Vitals Chrome Extension can help you fine-tune things before problems become costly. 

Regular check-ins keep you in control and help avoid nasty surprises that impact your conversions or revenue.

Our final thoughts 

Core web vitals monitoring isn’t just for techies or developers.

It’s a vital part of keeping your site competitive, usable, and profitable.

The sooner you take it seriously, the better experience you’ll deliver — and the more likely users are to stick around and convert. 

Curious about how to keep your site performing at its best? Explore more insights in our blog — there’s plenty more tips to increase your core web vitals. 

Photo © by BlackJack3D from Getty Images Signature