Core Web Vitals

Since 2021, Google has officially included Core Web Vitals among its ranking factors. This means your site’s speed and stability directly influence its position in search results.

What Core Web Vitals are

Core Web Vitals are three specific metrics that Google uses to evaluate the user experience on a website. LCP, Largest Contentful Paint, measures how long it takes for the page’s main content to load. CLS, Cumulative Layout Shift, measures visual stability, meaning how much the page’s elements shift around while it’s loading. FID and its successor INP, Interaction to Next Paint, measure how responsive the page is to user interactions.

Why Google introduced Core Web Vitals as a ranking factor

Google’s main goal has always been to offer users the best results, not just in terms of relevance but also quality of experience. A slow, unstable, or unresponsive site frustrates users and drives them to leave the page before they even read the content. Core Web Vitals are Google’s answer to this problem: objective, measurable metrics that let you evaluate a site’s technical quality in a standardized way. Since 2021, these signals have become part of the ranking algorithm, which means two sites with similar content now get differentiated based on their technical quality too.

Core Web Vitals and local SEO

For local businesses like shops, restaurants, professional practices, and agencies, Core Web Vitals have an even more direct impact. Most local searches happen on smartphones, often over connections that aren’t always ideal. A site that loads fast on mobile and doesn’t have elements shifting around during loading has a huge advantage in local search results. Investing in technical optimization isn’t just a matter of global ranking, it’s about concrete visibility in your own area.

What the optimal values are

For LCP, the target is under 2.5 seconds. For CLS, under 0.1. For INP, under 200 milliseconds. Exceeding these values doesn’t drastically penalize your ranking, but improving them gives you a concrete competitive advantage.

How to measure your site’s Core Web Vitals

The simplest tool is Google PageSpeed Insights: just enter your site’s URL and you get a full report with the current values and suggestions for improving them. Google Search Console also has a dedicated Core Web Vitals section that shows which pages have issues.

How to improve them

The most effective actions for improving Core Web Vitals include optimizing images in WebP format, using an efficient caching system, enabling a CDN, cutting unnecessary WordPress plugins, removing unneeded CSS and JavaScript, and choosing high-performance hosting.

The impact of Core Web Vitals on conversions

Improving Core Web Vitals doesn’t just affect ranking, it has a direct impact on conversions. Google studies show that sites with optimized LCP see significantly lower abandonment rates. A site that loads in under 2 seconds converts, on average, twice as well as one that takes 5 seconds. Every second of loading delay costs you customers and revenue. Optimizing Core Web Vitals is therefore an investment that pays for itself directly in business results.

Hosting and CDN: the foundation of performance

The choice of hosting is the single most decisive factor for Core Web Vitals. Slow hosting makes it impossible to hit optimal values no matter what other optimizations you make. High-performance hosting with servers in Europe, combined with a CDN that distributes content geographically close to your users, is the foundation you build a fast site on. Switching hosting providers is often the single change with the biggest positive impact on Core Web Vitals.

Ongoing monitoring of Core Web Vitals

Core Web Vitals shouldn’t be measured just once. Every site update, every new plugin installed, every image added can affect the metrics. Regularly monitoring the values through Google Search Console lets you catch any decline early and step in before it affects your ranking. A monthly check is enough for most sites. To dig deeper into how to technically optimize your site, read our guide on websites for small businesses.

Conclusion

Core Web Vitals aren’t purely a technical matter, they’re a business matter. A fast site converts more, ranks better, and gives your customers a better experience.