Google’s Core Web Vitals SEO Guide for a Prosperous 2023

Google continually refines its algorithms to provide the best possible user experience. Core Web Vitals is an integral component of Google’s page experience ranking signal. The 2023 update emphasizes the importance of quality content over paraphrased information, optimized technical aspects, and an excellent user experience. 

It serves as a reminder that it’s not enough to simply track your site’s organic search traffic and keyword rankings. You need to consistently create valuable content tailored to your audience’s needs and pay attention to your site’s technical aspects like site speed, mobile-friendliness, and proper indexing.

Understanding these factors and their implications for your business can be a game-changer in your digital marketing strategy. This article aims to:

    1. Demystify Google’s Core Web Vitals
    2. Highlight their importance for website ranking
    3. Provide strategies to enhance your site’s user experience in light of these updates. 

What Are Google’s Core Web Vitals?

Google’s Core Web Vitals are a collection of factors that play a pivotal role in your website’s user experience. They focus on three key aspects of web usability: Loading performance, interactivity, and visual stability. This trio is crucial in gauging the quality of experience a user has on your website. 

Notably, these metrics aren’t theoretical; they’re based on real-world data, making them an accurate reflection of user experience. By optimizing your website based on these Core Web Vitals, you can ensure that your site provides a more enjoyable and engaging experience for your users.

Now, let’s break down these terms and metrics for a more comprehensive understanding:

Largest Contentful Paint (LCP)

Time taken for the largest chunk of content (like an image or a text block) to appear on your screen is measured by LCP. It’s a way to quantify how long it takes for a web page to load from the perspective of an actual user. 

Google considers an LCP score of 2.5 seconds or faster to be good. So, if the main content on your site takes longer than this to load, users may lose interest and leave, which could lead to lower engagement and poor website performance.

First Input Delay (FID)

This metric captures your website’s responsiveness. It measures the time between a user’s first interaction with a web page (like clicking a button or a link) and the time the website responds to that interaction. If a user clicks on a link on your webpage and it takes a noticeable amount of time for the action to register, this increases your FID. 

Google suggests an FID of less than 100 milliseconds for a smooth and responsive user experience. A good FID ensures that users can interact with your site without frustrating delays.

Cumulative Layout Shift (CLS)

Ever been reading an article online and the text shifts, causing you to lose your place? That’s what CLS measures. It quantifies how much unexpected movement happens on your webpage. This could be caused by ads loading or dynamic content updates. A high CLS can be very disruptive and lead to a poor user experience. 

Google considers a CLS score of less than 0.1 to be good, indicating that elements on your page are stable and don’t shift around much, providing a smoother reading experience for users.

The Importance of Core Web Vitals for Your Business


Improved User Experience

Have you ever visited a slow-loading website, or one where things shifted around just as you were about to click? These negatives can push potential customers away, impacting your business’s profitability. 

By improving these metrics – i.e., by ensuring your website loads quickly, is interactive from the get-go, and doesn’t shift around unexpectedly – you provide a smoother, more enjoyable experience for users. This can increase user satisfaction, instill loyalty, and enhance your brand reputation.

SEO Ranking

Search Engine Optimization (SEO) is all about improving your website’s visibility on search engines like Google. Google uses many factors to determine which websites should rank higher in search results. 

If your website meets Google’s standards for good Core Web Vitals – that is, it loads fast, responds quickly to user interactions, and stays stable as it loads – it’s likely to rank higher in search results. This could lead to increased visibility, more traffic to your site, and potentially more business.

Conversion Rate

‘Conversion’ refers to a user completing a desired action on your website, like making a purchase or subscribing to a newsletter. The ‘conversion rate’ is the percentage of website visitors who complete such an action. Studies have found a correlation between page speed (a component of LCP), bounce rate (the percentage of users who leave your website after visiting just one page), and conversion rate. 

In essence, if your website loads quickly and interacts well (i.e., good LCP and FID), visitors are less likely to ‘bounce’ and more likely to ‘convert’ (e.g., make a purchase). By improving your Core Web Vitals scores, you can provide a better user experience, potentially reduce your bounce rate, and increase your conversion rate.

Strategies for Better Business Performance

While Google’s Core Web Vitals might seem like complex technical metrics, they can be understood and optimized with the right approach. Here’s a more detailed look at the strategies you can adopt to improve your website’s performance in these metrics:

Improve Server Response Times 

The time your server takes to respond to a request directly affects your website’s loading speed and thus your LCP score. You can enhance this by upgrading your server or choosing a more reliable hosting provider. 

Another helpful strategy is using a Content Delivery Network (CDN). CDNs store cached versions of your website on a network of servers globally. When a user requests your site, the CDN delivers it from the server closest to them, speeding up the loading time.

Optimize Images

Large, unoptimized images are a common culprit behind slow loading times. They take longer to load, negatively impacting your LCP score. 

You can address this by using modern, efficient image formats like WebP that provide superior compression and quality characteristics compared to older formats like JPEG or PNG. 

Additionally, ensure your images are appropriately sized. Serving overly large images that will be downsized by the browser wastes data and slows down page loading.

Avoid Unexpected Layout Shifts 

Unexpected shifts in your website’s content lead to a poor user experience and increase your CLS score. This can be an ad suddenly appearing and pushing text down. 

To keep a low CLS score, make sure dimensions are specified for media (like images and videos) and ads. This space reservation prevents content from unexpectedly pushing down other elements when it loads. 

Also, try to add new UI elements below the fold (the part of the web page visible only after scrolling) to avoid causing layout shifts.

Code Optimization

Extra, unused, or inefficient code can slow down your website, affecting both LCP and FID. You can improve your site’s performance by minifying your code, a process that involves removing unnecessary or redundant data without affecting how the resource is processed by the browser—spaces, line breaks, comments, block delimiters, etc. 

Also, compress your code files to make them smaller, and eliminate any unused code. This not only speeds up your website but also improves interactivity by allowing the browser to process user interactions more quickly.


Understanding and optimizing Core Web Vitals is not just beneficial but essential in today’s digital landscape. Google’s continuous emphasis on user experience in their ranking algorithms makes it imperative to stay updated with these metrics. 

By leveraging these strategies, you can create a seamless and engaging user experience, gain a competitive advantage in search rankings, and ultimately, drive better business performance.

To gain further insights into customer preferences and behaviors, which play a vital role in shaping your digital marketing strategies, consider reading our comprehensive Consumer Behavior Guide.

Harness the power of Google’s Core Web Vitals to enhance your digital presence, improve user experience, and boost your SEO rankings with Trending Island. Your online success might be just an optimization away!