If you’ve ever looked into SEO, you’ve probably come across the term Core Web Vitals and quietly moved on, assuming it was too technical to worry about. But if you have a small business website and you care about appearing in Google, it’s worth understanding what they are — because they do affect your ranking, and some of them are easier to fix than you might think.
What Are Core Web Vitals?
Core Web Vitals are a set of performance measurements that Google uses to assess the experience your website provides to visitors. They were introduced as a ranking factor in 2021 and have been part of how Google evaluates pages ever since.
There are three main metrics. Largest Contentful Paint measures how quickly the main content of a page loads — essentially how fast your site feels to someone arriving on it. Interaction to Next Paint measures how responsive your site is when someone clicks a button or taps a link. Cumulative Layout Shift measures visual stability — whether elements on the page jump around as it loads, which is a common frustration on poorly built sites.
Google scores each of these as Good, Needs Improvement, or Poor. The goal is to get all three into the Good range.
Do They Actually Affect Rankings?
Yes, but with some nuance. Core Web Vitals are a confirmed ranking signal, which means Google takes them into account when deciding where your pages appear in search results. However, they are one factor among many. A site with excellent Core Web Vitals but thin, irrelevant content won’t outrank a slower site with strong, authoritative pages on a topic.
Where Core Web Vitals tend to make a noticeable difference is when everything else is roughly equal. If your site and a competitor’s site are closely matched on content quality, backlinks, and relevance, better performance scores can tip the balance in your favour.
What Causes Poor Core Web Vitals?
The most common culprits are large, uncompressed images that take too long to load, poorly coded or outdated WordPress themes, too many plugins running unnecessary scripts, and slow or shared hosting. Fonts and third-party scripts — things like live chat widgets or cookie banners — can also drag scores down if they’re not implemented carefully.
Many small business websites fail Core Web Vitals not because of anything deliberate, but because they were built quickly without performance in mind, or haven’t been updated in years.
How Do You Check Your Scores?
Google’s own tool, PageSpeed Insights, gives you a free breakdown of how your site performs on both mobile and desktop, along with specific suggestions for improvement. It’s worth running your homepage through it to get a baseline. The scores are shown out of 100, and anything above 90 is considered good.
How Website Vibe Can Help
Website Vibe builds WordPress websites for UK small businesses with performance baked in from the start — optimised images, clean code, reliable hosting, and none of the bloat that drags scores down. If your site is underperforming on Core Web Vitals, the team can carry out a technical review and put together a plan to bring it up to scratch.
