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Core Web Vitals: Why They Matter for Your Business
A slow site doesn't just rank worse; it loses sales on every visit. What Core Web Vitals are and how to tell if they're costing your business customers.
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When someone tells you it’s worth improving your Core Web Vitals, they almost always frame it as an SEO issue: “Google cares about your site’s speed.” That’s true, but it’s the wrong frame for understanding why it matters. A slow site doesn’t just rank worse. It’s losing sales right now, on every visit, whether Google scores it or not.
What Core Web Vitals are, in simple terms
Core Web Vitals are three metrics Google uses to measure a site’s real loading experience:
- LCP (Largest Contentful Paint) measures how long it takes for the page’s main content to appear.
- INP (Interaction to Next Paint) measures how quickly the site responds when someone interacts with it: a click, a tap, typing in a field.
- CLS (Cumulative Layout Shift) measures whether elements move unexpectedly while the page loads, which is as annoying as going to tap a button and having something else jump under your finger at that exact moment.
The real impact on your business
It isn’t abstract. Someone who lands on your site and has to wait several seconds to see anything often just leaves, before finding out what you offer. Someone who clicks a button and sees nothing happen clicks again, or assumes something is broken. Someone whose page shifts while they’re trying to tap ends up tapping the wrong thing. Each of those moments is a lost sales opportunity, whether or not Google penalizes it.
How to check if your site has a problem
Google Search Console has a free Core Web Vitals report showing how your site actually performs, with real data from your own visitors rather than a simulation. If it shows red or yellow, there’s concrete room to improve.
What usually improves Core Web Vitals
Reduce what the browser has to load before showing something useful: optimized, correctly sized images, only the code that page needs, and an architecture that prioritizes showing content quickly over loading everything at once.
Animation and interactivity, if well implemented, don’t have to be the problem. The problem is usually unoptimized assets, not the design itself. Here’s our rule of thumb for web animation and UX, on when animation earns its place. And if you’re planning a new site, speed is one of the key differences in custom website vs WordPress.
FAQ
Does a well-designed site always have poor Core Web Vitals?
No, the two are independent. A site can look great and load fast if it’s built with that in mind from the start, not patched at the last minute.
Do Core Web Vitals affect some businesses more than others?
They affect any business where first impressions drive conversion, which is most of them, but they’re especially critical for ecommerce and any site where the user has to complete an action.
Can Core Web Vitals be fixed without rebuilding the whole site?
It depends on the problem, but many improvements (optimizing images, reviewing what loads before it’s needed) can be made without a full redesign. If a redesign is on the table, read how to redesign without losing SEO.
Where to start
If you suspect your site is losing visitors before they even see what you offer, measuring your Core Web Vitals is the first step. We build performance in from the design stage in our custom web development services; you can see sites built for animation and performance in our work. Tell us which site worries you and we’ll look at it together.
