Is Your Website Failing the 3-Second Test? Check With Our Free Core Web Vitals Calculator
In the world of web design, three seconds is an eternity.
If your website doesn’t load its main content, or if a user can’t click a button in that time, they’re gone. Worse, Google knows it. That’s why they introduced Core Web Vitals (CWV) as a critical ranking factor.
For years, most popular web design companies have talked about “page speed” but CWV gets specific. It’s not just about speed; it’s about user experience. Yet for most business owners, finding and understanding these scores is buried in complex reports.
Until now…
We wanted to make it simple. As a web design agency that obsesses over performance, we’re proud to launch our new, free Core Web Vitals Calculator.
No jargon. No complex charts. Just a plain-English, traffic-light score of your website’s performance in under 30 seconds*.
*The irony this is 10 times longer that the 3 second website limit is not lost on us.
What Are Core Web Vitals, Anyway?
In short, they’re the metrics Google uses to measure your site’s health from a user’s perspective which include:
- Largest Contentful Paint (LCP): How long does it take for the main content (like your hero image or main text) to appear? A good website design makes sure this is under 2.5 seconds.
- Interaction to Next Paint (INP): If a user clicks a button or opens a menu, how long does the site take to react? Anything over 200ms feels sluggish.
- Cumulative Layout Shift (CLS): Does your page “jump” around as ads or images load, causing users to click the wrong thing? This is a key sign of poor technical structure. (It’s also bl**dy annoying!)
Why Your Score Matters (Beyond Just SEO)
A poor CWV score is a direct symptom of a poor user experience. It tells visitors that your site is clunky, old, or untrustworthy. For a small business website, this is deadly. It increases bounce rates, tanks conversions, and erodes brand trust.
For WordPress web design, these issues are especially common. Decades of piling up slow plugins, using bloated themes, and relying on cheap hosting have given WordPress a bad name.
The truth is, a custom-coded, performance-first WordPress site will beat a template every time. But to get there, you need to know where you stand.
You’ve Got Your Score. Now What?
Did you run the tool and get a “Poor” or “Needs Improvement” score?
Don’t panic. This is the first step. That score is your starting line.
Fixing Core Web Vitals isn’t about installing another plugin. It’s about deep website development work. It involves:
- Optimising server response times (TTFB).
- Minifying and deferring JavaScript and CSS.
- Properly sizing and compressing images.
- Prioritising the LCP element to load first.
- Eliminating layout shifts with proper code.
It is equally important not to obsess over every detail to obtain the perfect Lighthouse score. Evaluate the sensible wins that work for you to get the best from your website.
As a WordPress agency based in Bristol, this is what we do. We don’t just build beautiful sites; we build sites that perform. Our custom WordPress development process is built from the ground up to score “Good” on Core Web Vitals, ensuring your site is loved by users and Google alike.
Ready to Fix Your Score?
That free tool is a diagnostic. Now, let’s talk about the cure.
If you’re ready to turn your “Poor” score into a powerful conversion tool, it might be time for a website redesign or a technical performance audit. Contact our web design Bristol team today and let’s build something fast.











