Core Web Vitals: Understanding Their Impact on SEO

Core Web Vitals: Understanding Their Impact on SEO

As the digital landscape continues to evolve, the importance of understanding and optimising your website’s performance has never been more critical. One of the key factors influencing this performance is Core Web Vitals, a set of metrics introduced by Google to measure user experience on the web. In this comprehensive guide, we will delve into the world of Core Web Vitals, exploring their impact on SEO and how they can be optimised to improve your website’s performance and ranking.

What are Core Web Vitals?

Core Web Vitals are a set of specific factors that Google considers important in a webpage’s overall user experience. They consist of three specific page speed and user interaction measurements: Largest Contentful Paint (LCP), First Input Delay (FID), and Cumulative Layout Shift (CLS). These metrics aim to help site owners measure user experience on the web in terms of loading performance, interactivity, and visual stability.

Understanding Core Web Vitals

Largest Contentful Paint (LCP)

LCP measures the loading performance of a webpage. It marks the point in the page load timeline when the page’s main content has likely loaded. A good LCP score helps reassure users that the page is useful. To provide a good user experience, LCP should occur within 2.5 seconds of when the page first starts loading.

First Input Delay (FID)

FID measures the time from when a user first interacts with your page (when they click a link, tap on a button, or use a custom, JavaScript-powered control) to the time when the browser is actually able to respond to that interaction. To provide a good user experience, pages should have an FID of less than 100 milliseconds.

Cumulative Layout Shift (CLS)

CLS measures the visual stability of a webpage. It quantifies how much a page’s content unexpectedly moves around during load. To provide a good user experience, pages should maintain a CLS of less than 0.1.

Impact of Core Web Vitals on SEO

Google has confirmed that Core Web Vitals are a ranking factor for search results. This means that websites with good Core Web Vitals scores may rank higher in Google search results than those with poor scores. This is because Google wants to ensure that its users are directed to websites that offer a good user experience.

Furthermore, Google’s “Page Experience” signal, which includes Core Web Vitals along with other user experience metrics like mobile-friendliness, safe browsing, HTTPS, and no intrusive interstitials, will also influence a website’s ranking in search results. Therefore, optimising your website’s Core Web Vitals can significantly improve your SEO performance.

How to Optimise Core Web Vitals

Improving your website’s Core Web Vitals requires a comprehensive understanding of each metric and the factors that influence them. Here are some strategies to optimise each Core Web Vital:

Optimising LCP

To improve LCP, focus on improving your webpage’s load time. This can be achieved by optimising your server response times, using a content delivery network (CDN), optimising images and text on your page, and removing any unnecessarily third-party scripts.

Optimising FID

To improve FID, minimise JavaScript execution. Break up Long Tasks into smaller, asynchronous tasks. Also, optimise your page for interaction readiness by using browser-level code splitting, optimising CSS and using web workers.

Optimising CLS

To improve CLS, ensure all images have dimensions, videos are in iframes, ads elements have a reserved space, and dynamically injected content does not occur above existing content.

How Chatsworth Media Can Help

At Chatsworth Media, we understand the importance of Core Web Vitals and their impact on SEO. Our team of experienced web designers and SEO specialists are adept at optimising websites to improve their Core Web Vitals scores, thereby enhancing user experience and boosting SEO performance.

Whether you’re a small business owner in Derby, a marketing manager in Nottingham, or a company director in Sheffield, we can provide tailored solutions to meet your specific needs. Our portfolio showcases our expertise in delivering high-performing websites that not only look great but also rank well in search results.

Don’t just take our word for it. Check out our customer reviews to see what our clients have to say about our services. If you’re ready to improve your website’s performance and boost your SEO, contact us today.


Core Web Vitals are a crucial aspect of your website’s performance and user experience. They significantly impact your SEO, influencing how your website ranks in search results. By understanding and optimising these metrics, you can provide a better user experience, improve your website’s performance, and boost your SEO.

At Chatsworth Media, we’re committed to helping businesses optimise their websites to achieve the best possible performance and SEO results. With our expertise in web design, development, and digital marketing, we can help you navigate the complexities of Core Web Vitals and their impact on SEO. Contact us today to learn more about how we can help your business succeed in the digital landscape.

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