How to Improve Core Web Vitals for SEO Success

how to improve core web vitals

In today’s digital landscape, website performance and user experience have become key factors in search engine optimization (SEO) and online success. 

With the rise of mobile devices and the ever-growing demand for faster and more efficient online experiences, it’s important to understand how website performance affects your SEO efforts. 

Enter Core Web Vitals, a set of user-centered performance metrics that have become the focus of Google’s Page Experience update

In this guide, we’ll explore the impact of Core Web Vitals on SEO and provide actionable tips to improve user experience and website performance.

Understanding Core Web Vitals

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Core Web Vitals are a set of metrics that measure three aspects of user experience: loading speed, interactivity, and visual stability.

These metrics include:

Largest Contentful Paint (LCP): Measures the loading speed of the largest element visible on a webpage.

First Input Delay (FID): Measures the time between a user’s first interaction with a webpage and the response of the browser.

Cumulative Layout Shift (CLS): Measures the visual stability of a webpage by quantifying the unexpected shifts in the layout.

Google has set specific benchmarks and thresholds for these metrics, and websites that meet or exceed these thresholds will be considered as having good performance. By measuring these metrics, website owners can gain insights into how users experience their websites and identify areas for improvement.

The Relationship Between Core Web Vitals and SEO

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The relationship between Core Web Vitals and SEO is a crucial one, as these metrics have a significant impact on a website’s search engine rankings and overall organic visibility.

Core Web Vitals are user experience metrics that measure loading speed, interactivity, and visual stability, while SEO (Search Engine Optimization) focuses on optimizing websites to improve their visibility in search engine results.

Google, the leading search engine, has emphasized the importance of user experience in determining search rankings. With the introduction of the Page Experience update, Core Web Vitals have become a key ranking factor.

Websites that deliver a positive user experience by meeting the thresholds set by Google for Core Web Vitals are more likely to rank higher in search results.

When a website prioritizes and optimizes Core Web Vitals, it directly influences its SEO performance. By improving loading speed (Largest Contentful Paint), interactivity (First Input Delay), and visual stability (Cumulative Layout Shift), websites create a more engaging and seamless user experience.

This leads to longer user dwell times, lower bounce rates, and increased user satisfaction, all of which are positive signals to search engines.

Furthermore, websites that provide a superior user experience through optimized Core Web Vitals are more likely to receive higher click-through rates, more organic traffic, and improved conversion rates. These factors collectively contribute to better search engine rankings and organic visibility.

To maximize the relationship between Core Web Vitals and SEO, website owners and SEO professionals should prioritize the optimization of these metrics.

By regularly monitoring and improving Core Web Vitals performance, websites can enhance their user experience, increase their chances of ranking higher in search results, and ultimately drive more organic traffic and achieve online success.

Optimizing Largest Contentful Paint (LCP)

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LCP measures the loading speed of the largest element visible on a webpage, which is usually an image or a video. Improving LCP is crucial for delivering a fast and engaging user experience. Here are some strategies to optimize LCP:

  • Optimize images and videos: Compress images and videos to reduce their file size without compromising quality. Use lazy loading to defer the loading of non-critical images and videos until they are needed.
  • Minimize render-blocking resources: Remove unnecessary resources that block the rendering of a webpage, such as JavaScript and CSS files.
  • Leverage browser caching: Use caching to store frequently used resources on a user’s device, reducing the need to fetch them from the server.

Enhancing First Input Delay (FID)

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FID measures the responsiveness and interactivity of a webpage. Users expect a website to respond quickly to their inputs, such as clicking a button or filling out a form.

To improve FID, consider the following strategies:

  • Optimize JavaScript execution: Minimize the amount of JavaScript code that needs to be executed and reduce its complexity.
  • Defer non-critical JavaScript: Defer the loading of non-critical JavaScript until after the main content has been loaded.
  • Optimize event handlers: Use efficient event handlers that don’t block the main thread and delay the execution of JavaScript.

Mitigating Cumulative Layout Shift (CLS)

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CLS measures the visual stability of a webpage by quantifying the unexpected shifts in the layout. Users expect a website to be visually stable and predictable, so minimizing CLS is essential for delivering a positive user experience.

Here are some techniques to mitigate CLS:

  • Set dimensions for images and videos: Reserve the space for images and videos to prevent the layout from shifting unexpectedly when they load.
  • Use CSS aspect ratios: Specify aspect ratios for elements to ensure that their dimensions are maintained, even if the content inside changes.
  • Preload content: Use preloading techniques to ensure that resources are loaded before they are needed, reducing the chances of layout shifts.

Optimizing for Core Web Vitals: Best Practices


To optimize your website for Core Web Vitals, it’s important to prioritize performance in website development and design.

Consider the following best practices:

  • Implement responsive design: Ensure that your website is mobile-friendly and adapts to different screen sizes and devices.
  • Evaluate third-party scripts and integrations: Assess the impact of third-party scripts on your website’s performance and consider removing or optimizing them if necessary.
  • Ongoing monitoring and optimization: Continuously monitor your website’s performance using tools like Google’s PageSpeed Insights or Lighthouse. Regularly optimize and fine-tune your website based on the insights gathered.


In the age of user-centric search engines, website performance and user experience are integral to SEO success. Core Web Vitals play a crucial role in determining how users perceive and interact with your website. By optimizing these metrics, you can enhance your website’s performance, improve search engine rankings, and provide visitors with a seamless and engaging experience. Prioritize user experience and leverage the insights from Core Web Vitals to stay ahead of the competition and drive organic traffic to your website.

Remember, SEO is an ongoing process, and continuous monitoring and optimization are key to maintaining a high-performing website. Stay up to date with the latest trends and updates in SEO to ensure your website remains competitive in the ever-evolving digital landscape.

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