How to Improve Core Web Vitals for SEO?

Have you ever asked yourself how fast your site is perceived for visitors? Core Web Vitals are Google’s way of measuring a website’s user experience, focusing on three key areas: load speed, image stability, and interactivity. These factors ensure that a website looks good and works efficiently. With all the metrics becoming supercritical in SEO, our main question is: “so, shall we jump right in and check what those metrics are, why they matter, and how to improve Core Web Vitals for SEO to optimize your website for better user experience, search ranking, or even both?”

What are Core Web Vitals?

Core Web Vitals are Google’s set of key metrics that measure real-world user experience on a website. Optimizing for them has become crucial for ranking well in search and providing a good user experience. The three Core Web Vitals metrics are:

  • Largest Contentful Paint (LCP) – measures loading performance
  • First Input Delay (FID) – measures interactivity
  • Cumulative Layout Shift (CLS) – measures visual stability

In this article, we will discuss actionable tips to optimize all three Core Web Vitals for better SEO and user experience.

Why are Core Web Vitals important?

The first step to SEO is not only the creation of content, but also how people experience your website. That is the function for which Core Web Vitals exist. It is these metrics that capture things like the page load status, page stability, and program responsiveness, all factors which are directly linked to how the user experiences a website or app. You can use Core Web Vitals to determine on what pages or/and across the entire site people may bounce due to various reasons.

How to Improve Core Web Vitals for SEO

Improving Core Web Vitals for SEO is crucial for enhancing your website’s performance and user experience. Core Web Vitals focus on three main aspects: loading speed, interactivity, and visual stability. By optimizing these elements, you can ensure your site meets Google’s standards, leading to better search rankings and a more enjoyable experience for your visitors. Techniques include optimizing images, leveraging browser caching, and improving server response times. By prioritizing these improvements, you not only boost your SEO but also provide a smoother, more engaging experience for your users.

Do Core Web Vitals performance scores directly impact SEO?

Core Web Vitals scores themselves might not correlate with or are in a way shaped by SEO ranking metrics.( Like “SEO 40”). Nevertheless, they simply carry out a computation process with metrics on the background, (LCP, for instance).

Here’s why: these metrics became the measuring point for user’s experiences on your site. A page with slow loading time, layout shifts that are unexpected or elements which are unresponsive can be frustrating to the visitors, and, therefore, they will bounce (leave the site early). For Google, what users do online must always be taken into consideration, thus high emphasis on user experience as indicated through Core Web Vitals proves to be a key factor as far as search ranking algorithms are concerned.

Only by improving your Core Web Vitals metrics, you’ll not only do a favour to the search engines, but you’ll also give your site a good chance to keep your users happy, and open some new possibilities to revisit the site.

Tips For improving your Core Web Vitals

Tips For improving your Core Web Vitals

Optimize Largest Contentful Paint (LCP)

LCP measures how fast the main content of a web page loads. Follow these steps to optimize it:

  • Minimize render-blocking JavaScript and CSS by deferring non-critical resources. This allows initial page rendering without waiting for these assets.
  • Optimize images by compressing, resizing, and using modern formats like WebP. This reduces image file sizes and lowers LCP.
  • Enable text compression and content delivery networks (CDNs) like Cloudflare to deliver assets faster.
  • Minify HTML, CSS, and JavaScript code as this requires less time to load.
  • Avoid third-party tracking scripts and limit redirects to speed up server response times.
  • Cache dynamic assets on a CDN and leverage browser caching headers. This skips network trips for repeat visitors.

Improve First Input Delay (FID)

FID tracks the time from when a user first interacts with a page to when the browser can respond to that interaction. Here are some tips for improving it:

  • Preconnect to third-party origins using <link rel=”preconnect”> to establish early connections.
  • Code splitting your JavaScript bundles allows faster initial loading of critical code needed for interactivity. Non-critical code can load later.
  • Use modern frameworks like React and Vue that employ techniques to yield control back to the browser faster.
  • Prevent long-running main thread JavaScript tasks with asynchronous logic and Web Workers.
  • Minimize the use of slow third-party scripts for things like chat widgets. Load these on user action instead of upfront.

Reduce Cumulative Layout Shift (CLS)

CLS measures unexpected movement of visible page elements. To minimize it:

  • Set size attributes explicitly on images and video embed dimensions so browser can allocate space upfront avoiding layout shifts.
  • Include CSS files before any render-blocking elements on the page to prevent FOMC (flash of missing CSS).
  • For dynamic content loading, reserve space using placeholders so elements can transition smoothly without causing shifts and reflows.
  • Avoid Inserting new DOM elements above existing content forcing existing content to shift down.
  • Avoid ads or embeds that may run arbitrary code leading to shifts. If needed, include them in isolated iframes.

Measure Results and Iterate

It is crucial to measure Core Web Vitals at every stage using tools like PageSpeed Insights, Search Console, and Chrome UX Report. Identify poor-performing pages and continuously refine their optimization approach. Aim to achieve these optimal targets across mobile and desktop:

  • LCP under 2.5 seconds
  • FID under 100 milliseconds
  • CLS under 0.1

With a well-planned technical SEO strategy focused on Core Vitals, you can deliver outstanding user experience and reap the search ranking benefits. Measure, refine, and iterate – that is key to continuous optimization.

How to Improve Core Web Vitals for WordPress Sites

Improving Core Web Vitals on WordPress sites is crucial for SEO success and enhancing the user experience. WordPress, with its versatility and wide range of plugins, offers unique opportunities to optimize performance metrics like Largest Contentful Paint (LCP), First Input Delay (FID), and Cumulative Layout Shift (CLS). Explore our blog related to Choosing the Right Themes and Plugins


Optimizing for Core Web Vitals is essential for SEOs in 2024 and beyond. By following the actionable tips in this article, you can load pages faster, improve interactivity, minimize layout shifts and aim for the optimal targets. The visual stability, loading speeds and overall UX lift will not only be appreciated by users but also rewarded by search engines through better rankings. It is highly recommended to make Core Vitals optimization an integral part of your SEO workflows going forward.

Related Topic: What is an SEO Score?



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