Every second your website takes to load, you risk losing a visitor who was ready to become a customer. Google formalized this reality through a set of metrics called Core Web Vitals — a way of measuring real user experience rather than guesswork. If you’ve never checked yours, there’s a good chance your site is quietly turning visitors away before they even see what you offer.
What Are Core Web Vitals?
Core Web Vitals are three specific metrics Google uses to evaluate how a page performs from a real user’s perspective:
- LCP (Largest Contentful Paint): How long it takes for the main content of a page (usually a hero image or headline) to fully load and appear. A good LCP is under 2.5 seconds.
- INP (Interaction to Next Paint): How quickly a page responds when a visitor clicks, taps, or types something. INP replaced the older FID metric and measures responsiveness throughout the entire visit, not just the first interaction. A good INP is under 200 milliseconds.
- CLS (Cumulative Layout Shift): How much content unexpectedly shifts around while a page is loading — think of a button moving right as you’re about to tap it. A good CLS score is under 0.1.
Together, these three metrics answer a simple question: does this page feel fast, stable, and responsive to a real person using it?
Why Core Web Vitals Matter for Your Business
- They directly affect conversions. Studies consistently show that even a one-second delay in load time can measurably reduce conversions, form submissions, and time on site.
- They’re a confirmed ranking factor. While content quality remains the biggest factor in search rankings, Core Web Vitals are part of Google’s page experience signals — a weak score can hold back an otherwise strong page.
- They shape first impressions. A slow or janky website signals — fairly or not — that a business is outdated or careless, which quietly undermines trust before a visitor reads a single word of your copy.
- Mobile visitors are especially sensitive. Most traffic today happens on mobile connections with variable speed; a page that feels fine on a fast office Wi-Fi connection can feel painfully slow on a phone.
Common Causes of Poor Core Web Vitals
- Unoptimized, oversized images
- Too many plugins or scripts running on a WordPress site
- Render-blocking JavaScript and CSS
- Slow or overloaded hosting
- Ads, pop-ups, or embeds that load late and shift the layout
- Web fonts that load slowly or cause visible text reflow
How to Improve Your Scores
- Compress and properly size images, and use modern formats like WebP.
- Audit your plugins and remove anything not actively used — each one adds weight and potential conflicts.
- Use caching and a content delivery network (CDN) to serve pages faster to visitors regardless of location.
- Reserve space for images and embeds in your page layout so content doesn’t jump around as it loads.
- Choose reliable hosting matched to your traffic and site complexity — cheap, oversold hosting is one of the most common root causes of poor performance.
- Test regularly using Google’s PageSpeed Insights or Search Console’s Core Web Vitals report, since scores can drift as you add content and features over time.
FAQ
How do I check my Core Web Vitals scores?
Google Search Console has a dedicated Core Web Vitals report based on real visitor data, and PageSpeed Insights gives you a detailed, page-by-page breakdown.
Is a fast website enough to rank well?
No — speed is one input among many. Content quality, relevance, and authority still matter most, but poor Core Web Vitals can hold back pages that would otherwise perform better.
How often should Core Web Vitals be checked?
At minimum, after any major site update, new plugin installation, or redesign — and ideally as part of routine site maintenance every few months.
Get a Free Speed Check for Your Website
At Makis Web, website performance is part of every project we build and maintain. Reach out and we’ll tell you exactly where your site stands.
