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Core Web Vitals and Page Experience: A Beginner’s Guide


A guaranteed way to find success online, whether it’s an online store or a SaaS product, is to optimize for the quality of user experience. Search engines like Google know how important user experience is, so they now prioritize content relevance and how smoothly users can navigate and engage with a website.

Enter Core Web Vitals – a term that might sound technical, but it’s essentially about users’ basic experience when they visit your site. In official terms:

Web Vitals is an initiative by Google to provide unified guidance for quality signals that are essential to delivering a great user experience on the web.

These are not just random metrics but micro-focused measurements of your website’s performance. It includes everything about the page experience of a website– how fast it loads, how quickly it responds to clicks, and how stable it is during navigation.

In this blog post, we’ll explore Core Web Vitals and understand how they matter for your website’s SEO. We’ll unravel the significance of each vital metric – Largest Contentful Paint (LCP), First Input Delay (FID), and Cumulative Layout Shift (CLS) – and explore actionable steps you can take to enhance your site’s performance.

Let’s get started.


Understanding Core Web Vitals

At its core, pun intended, Core Web Vitals is a set of three specific metrics designed to measure your website’s key aspects of user experience. Each metric addresses a crucial element:

  1. Largest Contentful Paint (LCP):This measures how quickly the main content of your page becomes visible to users. Essentially, it’s about speed – the time it takes for your audience to see the most significant part of your page.
  2. First Input Delay (FID):FID gauges the time it takes for your website to respond when a user interacts with it for the first time, like clicking a button or a link. It’s a crucial metric for interactivity and engagement.
  3. Cumulative Layout Shift (CLS):This metric looks at the stability of your page’s layout. Ever had the experience of clicking on something only for the page layout to shift unexpectedly? CLS aims to quantify that, helping ensure a smoother and less frustrating user experience.

These three metrics collectively provide a holistic view of your website’s performance, highlighting areas that may need attention for a seamless user experience. Understanding these metrics is like decoding the language of user satisfaction – the faster, the more responsive, and the more stable, the better.

Significance of Core Web Vitals for SEO

Search engines have become indispensable for navigating the internet for information. As the primary navigator, Google continuously updates its algorithms to ensure that it leads searchers to websites that offer relevant information and a smooth and enjoyable browsing experience.

This is where Core Web Vitals step into the spotlight. Google has explicitly stated that page experience is a key ranking factor, and Core Web Vitals directly reflect that commitment. Websites that provide a positive user experience, as indicated by favorable Core Web Vitals scores, are more likely to rank higher in search engine results.

The reasoning is simple: search engines aim to direct users to websites that provide valuable content and ensure that users can access that content without frustration. In a nutshell, Core Web Vitals bridges the gap between content quality and user experience.

If you know some basics of technical SEO, then optimizing for Core Web Vitals becomes infinitely easier.

Optimizing for Largest Contentful Paint (LCP)

Now that we understand that Largest Contentful Paint (LCP) is all about how quickly users can see the main content on your page let’s delve into practical strategies for optimizing this vital metric:

  1. Optimize Images and Media:

Compress and appropriately format images to reduce their file size.

Utilize responsive images to ensure they adapt to different screen sizes.

Leverage lazy loading to prioritize the loading of images when they come into the user’s viewport.

  1. Efficient Resource Loading:

Prioritize the loading of essential resources, such as stylesheets and scripts, to enhance the initial rendering of the page.

Utilize browser caching to store commonly used resources, reducing the need for repeated downloads.

  1. Optimize Server Response Time:

Ensure your web hosting server responds promptly to user requests.

Employ Content Delivery Networks (CDNs) to distribute content geographically, reducing server response times for users worldwide.

By focusing on these strategies, you’re not just improving LCP but actively contributing to a faster, more engaging user experience.

Next is to improve the second Core Web Vital – First Input Delay (FID). Here’s how to make your website more responsive to user interactions by improving FID.

Improving First Input Delay (FID)

First Input Delay (FID) is about responsiveness – how quickly your website reacts when a user interacts with it. Let’s dive into actionable steps to enhance FID and make your website more responsive:

  1. Optimize JavaScript Execution:

Minimize and defer the loading of non-essential JavaScript.

Utilize asynchronous loading for scripts to prevent them from blocking other page elements.

  1. Prioritize Critical Rendering Path:

Identify and prioritize critical elements for rendering, ensuring a faster initial display of your page.

Optimize CSS delivery by minimizing render-blocking stylesheets.

  1. Browser Caching and Code Splitting:

Implement browser caching for static assets to reduce load times for returning visitors.

Explore code-splitting techniques to load only the necessary code for the current page, improving overall performance.

By reducing FID, you create web applications that feel responsive and engaging to users. However, you must ensure that the optimizations do not hinder the stability of the page layouts. Cumulative Layout Shift (CLS) is the Core Web Vital, which addresses the stability of your page’s layout during user interactions.

Minimizing Cumulative Layout Shift (CLS)

Cumulative Layout Shift (CLS) is all about the stability of your page’s layout – ensuring that elements don’t unexpectedly move around, causing frustration for users. Let’s explore strategies to minimize CLS and create a visually stable user experience:

  1. Set Dimensions for Media:

Reserve space for images, videos, and other media elements to prevent layout shifts as they load.

Specify width and height attributes for multimedia elements to allocate space in advance.

  1. Load Fonts Properly:

Use font-display: swap to ensure text remains visible during font loading, preventing sudden layout changes.

Prioritize loading custom fonts to minimize delays in text rendering.

  1. Dynamic Content Handling:

Implement dynamic content placeholders to reserve space for elements that may load asynchronously.

Ensure that ads and other dynamically injected content do not push existing content down upon loading.

By addressing these considerations, you’re not just reducing CLS but providing users with a smoother and more visually predictable browsing experience. Remember, the goal is not just to meet Core Web Vitals for the sake of search engine rankings but to genuinely enhance the overall satisfaction of your website visitors. 

Tools for Monitoring Core Web Vitals

Monitoring and analyzing your website’s Core Web Vitals is crucial for understanding its performance and identifying areas for improvement. Here are some essential tools to help you track and optimize these vital metrics:

  1. Google PageSpeed Insights:

Provides a comprehensive overview of your website’s performance, including Core Web Vitals scores.

Offers suggestions and actionable insights to improve performance.

  1. Lighthouse:

An open-source, automated tool for improving web page quality.

Generates reports on various aspects of your website, including Core Web Vitals metrics.

  1. Chrome DevTools:

Allows real-time inspection and debugging of web pages.

Includes performance panels that show Core Web Vitals metrics and opportunities for improvement.

  1. Web Vitals Chrome Extension:

Offers a glance at a web page’s Core Web Vitals metrics.

Enables monitoring as you browse, helping identify issues on different sites.

  1. Google Search Console:

Provides insights into how Googlebot sees your site and flags issues affecting Core Web Vitals.

Allows you to monitor your website’s performance over time.

  1. Ranklogs Site Auditor

ranklogs-site-auditor-summaryRanklogs Site Auditor is a powerful tool designed to audit websites meticulously. We created this site auditor to help website owners easily pinpoint performance issues. Our Site Auditor provides insights for:

  1. Site Level Errors

These are fundamental issues that impact the overall health of a website. Whether it’s broken links, improper redirects, or issues with the site’s structure, Site Level Errors are a diagnostic tool for webmasters to fortify the foundation of their online presence.

  1. Critical Errors

Critical errors are the red flags that demand immediate attention because these issues have the potential to severely hinder user experience and, consequently, affect search engine rankings. Ranklogs Site Auditor identifies these critical errors, enabling webmasters to prioritize and swiftly address them, preventing any substantial impact on the site’s performance.

  1. SEO Issues

These are the on-page and off-page elements. By flagging SEO issues, Site Auditor highlights the factors that might impede a website’s ascent in search engine rankings. From meta tag discrepancies to content optimization, addressing these issues can significantly enhance a site’s discoverability.

  1. Performance Issues

This is where you get the Core Web Vitals tally, such as slow loading times and inefficient resource handling. Ranklogs Site Auditor dives into the intricacies of a website’s performance, identifying bottlenecks and inefficiencies that can lead to poor page experience.

  1. Warnings

Warnings serve as cautious flags, indicating areas that might not be critical yet but have the potential to evolve into issues. By proactively addressing potential pitfalls, webmasters can ensure a website’s ongoing health and resilience.

The Ranklogs Site Auditor goes beyond mere diagnosis; it provides a roadmap for optimization. The insights it offers help deliver exceptional user experiences and maximize your website’s potential.

Actionable Tips for Implementing Core Web Vitals

Optimizing for Core Web Vitals isn’t just about understanding the metrics; it’s about taking tangible steps to enhance your website’s performance. Let’s explore actionable tips you can implement to improve your Core Web Vitals and, subsequently, your overall user experience and SEO ranking:

  1. Prioritize Critical Resources

Identify and prioritize loading critical resources, such as CSS, JavaScript, and images, to ensure a faster initial page display.

  1. Optimize Images and Multimedia

Compress images to reduce file sizes without compromising quality.

Use modern image formats (e.g., WebP) that offer better compression.

Leverage lazy loading for images and multimedia to defer loading until it enters the user’s viewport.

  1. Upgrade Your Hosting Provider

Choose a reliable hosting provider with fast server response times.

Consider Content Delivery Networks (CDNs) to distribute content across global servers, reducing latency for users worldwide.

  1. Minimize and Defer JavaScript

Minimize the use of non-essential JavaScript.

Defer the loading of JavaScript that is not immediately needed for the initial page render.

  1. Optimize CSS Delivery

Minimize render-blocking stylesheets to expedite the rendering of critical content.

Utilize asynchronous loading for non-essential stylesheets.

  1. Implement Browser Caching

Set up browser caching for static assets to reduce load times for returning visitors.

Establish an appropriate expiration period for cached resources.

  1. Address Cumulative Layout Shift (CLS)

Set dimensions for media elements to prevent layout shifts as they load.

Prioritize loading fonts properly to avoid sudden layout changes.

Use dynamic content placeholders to reserve space for asynchronously loading elements.

  1. Monitor and Iterate

Use tools like Google PageSpeed Insights, Lighthouse, and Chrome DevTools to monitor Core Web Vitals.

Act on the insights these tools provide and continuously iterate on your optimizations.

  1. Test Across Different Devices and Browsers

Ensure your optimizations cater to various devices and browsers.

Test your website’s performance on different platforms to guarantee a consistent and positive user experience.

  1. Collaborate with Developers and Designers

Foster collaboration between developers and designers to implement performance-focused design practices.

Prioritize user experience in the development process to create a seamless and visually appealing website.

By incorporating these actionable tips into your website optimization strategy, you’re aligning with Core Web Vitals and fostering a user-centric approach that benefits both your audience and your search engine rankings. 


Core Web Vitals provides a roadmap for optimizing websites that meet and exceed user expectations. These improvements are not only necessary for a positive page experience but also inherently align with the principles that search engines prioritize.


  • Ankit Pandey

    Hey, I'm Ankit Pandey, the Founder behind Ranklogs which is a culmination of my over 15 years of experience in the SEO industry. My journey has been fueled by a deep-seated passion for digital marketing when I founded SeoEaze, a leading digital marketing agency, in 2009, which has helped numerous businesses achieve their online goals. My expertise lies in crafting innovative SEO strategies that drive organic growth and enhance online visibility. Over the years, I have successfully worked on over 500 digital marketing campaigns for some of the largest brands in the industry. This extensive experience has honed my ability to deliver exceptional results and stay ahead of industry trends. When I'm not immersed in the world of SEO, you can find me sharing insights and connecting with fellow professionals on LinkedIn or Twitter (X).

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