Improve Core Web Vitals for WordPress Site

Core Web Vitals is part of Google’s ongoing effort to improve the web performance of pages. Why? Slow websites and web applications force customers to switch to other sites because Google’s business is primarily web-based.

For WordPress site owners, understanding and optimizing these metrics is vital to ensure visitors have a smooth and engaging experience. This guide provides a comprehensive overview of how to examine and improve Core Web Vitals specifically for WordPress websites, helping you enhance your site’s performance and boost its visibility on search engines.

What are the WordPress Core Web Vitals?

The Core Web Vitals of WordPress are made up of three vital measures. They are: LCP (Largest Contentful Paint), INP (Interaction to Next Paint), and CLS (Cumulative Layout Shift). Every vital measure is a certain aspect of the user experience, which includes interactivity, loading performance, and visual stability.

• Largest Contentful Paint: It measures the amount of time it takes to load the biggest content element on a page.
• Interaction to Next Paint: It measures how long it takes from the first interaction of a user to the display of the next visual update.   
• Cumulative Layout Shift: When loading, it measures how much the page layout unexpectedly moves, such as images or shifting buttons.s.

Why Are Core Web Vitals Important?

Core Web Vitals need to perform well because they ensure a fast, smooth, and stable user experience. Furthermore, it also boosts the SEO of your WordPress website.  People are more likely to stay on your website and potentially convert into customers if the site works well and quickly responds to their requests.

The vitals are ranking factors that are being used by Google. You can greatly enhance your search engine rankings and drive more traffic to your website by optimizing all three metrics.

Do Core Web Vitals Affect Search Engine Optimization as a Ranking Factor?

• Google is using CWV as a ranking factor; thus, the metrics could affect your WordPress website’s SEO performance.
• Core Web Vitals, together with mobile-friendliness, safe-browsing, and intrusive interstitial guidelines, are part of the new Page experience signals.
•  The core metrics impact desktop and mobile organic results, and whether or not your site appears in the Top Stories.
• Core Web Vitals metrics should be met to boost organic ranking.

How to Test Your Core Web Vitals Score on WordPress?

The core web vitals can be measured, tested, and reported using a wide variety of tools that are available to you. Among them are Google PageSpeed Insights, Google Search Console, and the Web Vitals extension. Taking a look at the features of each option, as well as when and how they should be used, we will also note down a few of their advantages.

Google PageSpeed Insights

PageSpeed Insights is a popular tool for checking the performance and speed of your web pages:

It is very easy to use, all you have to do is enter your URL in the input field and click on the Analyze button. You will see a difference. The most effective way to diagnose performance problems is to find out what your real users are experiencing.

One of the things we like best about PageSpeed Insights is that it provides you with diagnostics as well as opportunities for how you can improve your site for better speed and performance:

The other advantage of this tool is that the data it uses is derived from actual browser data. When you use PageSpeed Insights, you can quickly figure out where your website stands in terms of the things that are thought to be the most important. After that, it walks you through some easy steps that you can take to solve any problems with your website that could be a factor in the poor scores.

Google Search Console

Adding Google Search Console as the next tool to your arsenal will help you measure the health of your website by testing and measuring:

You may obtain the recently-added Core Web Vitals report from Google here. If you have verified ownership of your website and use Google Search Console, you will be able to locate and access this report, which is based on actual users, in the Enhancements section:

This report can help you find and learn about possible problems on the pages of your website that hurt your web vitals and UX as a whole. You can also use it to find groups of pages on your website that have the same problems.

PageSpeed Insights and Google Search Console are populated with Chrome User Experience (CrUX) Report data. However, a benefit of using Google Search Console is that it allows you to examine the LCP data throughout your entire website, as opposed to randomly checking particular pages.

The Web Vitals Extension

If you use Google Chrome, you can also download the following extension that will allow you to access your Web Vitals information:

The Web Vitals Chrome addon is free to use and makes it simple to diagnose FID or CLS-related issues. You can use it on your own website and while browsing the web.

This small browser plugin uses the web-vitals library to measure each statistic and show the results. It gives a quick and easy method for comparing the performance of your website to that of your competitors.

Once the extension is installed, a square will be added to the top right-hand corner of your Chrome browser. Note that the color of the square will change depending on the Web Vitals’ performance. For example, if everything is within an acceptable range, the square will be green. If one or more of the metrics indicates a poor UX, it will be red (as will the metric that needs your attention). If the extension is unable to access and test the site you’re on, the square will be gray instead.

This is a simple extension that provides basic and straightforward information. Although there isn’t much information available beyond the metrics, it is a hassle-free way of obtaining this data on the fly.

Chrome DevTools

For a more detailed look at these metrics, you can use Chrome DevTools (and, more specifically, Lighthouse) to measure your Core Web Vitals in a lab environment:

However, this method should primarily be used for measuring LCP and CLS. Considering that this tool loads your pages in a simulated environment with no real user input, it cannot provide measurements for FID. Instead, it uses a similar metric called Total Blocking Time (TBT).

How to Improve Core Web Vitals?

To improve your Core Web Vitals scores, there are several measures to undertake. Website owners and managers need to work closely with developers to prioritize the implementation of the improvements or changes.

Ways to boost your WordPress website:

• Build a Dynamic Initial Page Load System: Establish a dynamic system for the initial page load so that only content and resources that are “above the fold” are immediately loaded.
•  Image Compression and Optimization: Audit the images on your site. Optimize and compress these files to reduce the size without affecting quality.
• Change to a Lighter WP Theme: Themes in WordPress can be big and filled with unnecessary features. This could lead to unnecessary processing on the backend. Determine which features are needed and remove the rest to help your site render faster.
•  Code Restructuring for Mobile Experience: This helps ensure that the device type is detected right away on the first request, and the resources loaded are only those that are mobile-specific. After making the change, expect the mobile scores to improve.
• Remove jQuery Library Dependency: All jQuery references should be removed and replaced with plain JavaScript. This will improve the initial loading time of your site as the connection to download jQuery is no longer needed after making the change.
• Remove and Restructure CSS: Refactor CSS to be more specific and precise to achieve a more efficient and lighter CSS usage throughout your website. Furthermore, remove redundant CSS to boost load times.

How to Improve the Largest Contentful Paint (LCP) on WordPress?

LCP optimization is the most straightforward metric since it’s pretty much entirely WordPress best practices. The perceived load speed is the focus of the Largest Contentful Paint.

This is when visitors see the primary content of the page. When the WordPress website takes too long to load, the tendency is that users will leave your site even before they see your offerings. Check out the tips below:

1. Page Caching: Page caching speeds up how fast the server can respond, so it’s important to set it up. Furthermore, it can lower the server response times.  

2. Image Optimization: Optimizing images will speed up the website. Use tools such as ImageOptim, for instance, to compress files. Furthermore, you can also serve images in next-gen formats and use responsive sizes so your site will not load oversized media.

3. Code Optimization: Loading unnecessary JavaScript or CSS files before the main content slows down loading. Remove render-blocking resources on your WordPress website to fix this. Furthermore, minify JavaScript and CSS files and remove unused CSS.

4. Optimizing Browser Caching: Browser caching optimization lessens the number of HTTP requests sent to a server. Also, it lessens bandwidth usage, which is great for users with slow internet connections. 

5. Use CDN (Content Delivery Network): A Content Delivery Network lessens the distance between a user and the server. It significantly speeds up loading times, particularly for international visitors.

6. Preconnect: Preconnect is necessary for important resources. It enables you to establish essential third-party connections early on. It tells the browser to establish an early connection to external domains, saving time when loading a page.

How to Boost the First Input Delay Scores on WordPress?

INP optimization speeds up the responsiveness of the page. Formerly known as First Input Delay, it was limited to the first interaction and only measures the input delay. Poor responsiveness can be a frustrating experience for users.

Here are tips to boost the FID or INP scores on WordPress.

1.   Minimize JavaScript: Minimize the execution time of JavaScript by breaking up long tasks and deferring non-vital scripts. This ensures that the browser will not freeze when a user attempts to interact.

2.   Code-splitting: Load-splitting only loads the JavaScript needed for the initial view instead of the entire code of the WordPress website at once.

3.   Critical Resources: Make critical resources the top priority. Make sure essential scripts, such as navigation functionality, load before others that are less important. Strategic use of defer and async attributes can greatly help.

4.   Modern Framework: Consider modern frameworks, such as Vue, React, and Angular, which can be optimized to minimize blocking scripts when configured properly. Furthermore, static site generation (SSG) or server-side rendering (SSR) can also help.

5.   Remove third-party Scripts: Unused third-party scripts should be removed. Every chatbot, analytics tool, and social widget adds JavaScript overhead. It helps to regularly audit your third-party scripts and remove what you no longer use.

How to Improve Cumulative Layout Shift Scores on WordPress?

CLS optimization is a bit more technical, since it deals more with the code of your WordPress website. Some of the most common issues and fixes are:

1.   Fix Dimensionless Images: When adding images via the WP editor, dimensions are automatically added by WordPress. Nevertheless, make sure to add dimensions if you’re adding images manually anywhere using your code.

2.   Optimize Web Fonts: For custom web fonts, a late-loading font can be detrimental. The key is to preload important fonts by telling the browser to load fonts earlier.

3.   Fix No-Dimension Embeds, iFrames, and Ads: The same as with images, fix embeds, iframes, and ads without dimensions because they can also cause issues. Always make it a point to specify sizes when using them. Or, if you’re putting on an ad, make sure to “reserve” space for every ad.

4.   Caution with Injected Content: Be wary of injected content. Stay away from injecting content above an existing one unless it’s a response to the action of a user. Banners, pop-ups, or ads that push down content frustrate users and hurt your site’s CLS score.

How to Track Your Progress?

Boosting Core Web Vitals is not a one-time job but an ongoing effort. Here’s how you should keep track of your WordPress website performance:

Google PageSpeed Insights

For page-level analysis, use the PageSpeed Insights of Google. This tool provides lab data or simulated tests as well as field data, or real user measurements when available.

Search Console’s Core Web Vitals

For the site-wide trends report, check out the Search Console’s Core Web Vitals in Google. This displays which page groups are passing or failing and monitors improvement over time.

Separate Monitoring of Mobile and Desktop

Mobile and desktop should be monitored separately. Mobile scores are naturally lower due to slower connections, and mobile devices are less powerful. Make mobile optimization a top priority since most traffic is mobile-first.  

Lighthouse Audits in Chrome DevTools

To identify specific opportunities for improvement, run Lighthouse Audits in Chrome DevTools. Lighthouse can give actionable recommendations with an estimated effect.

Continuous Monitoring

Set up continuous monitoring using several tools, such as SpeedCurve, Calibre, or Google’s web-vitals JavaScript library. They can alert when performance subsides, helping you catch problems before they impact your rankings.

Tips to Improve a WordPress Website’s Core Web Vitals

How should you optimize your website to boost your CWV scores if you are not meeting the Google recommendations for the three Core Web Vitals metrics?

• Create Quality Content: Quality content is important, but it should also be supported by modern technology that can keep up with the speed of the web.
• Ease of Implementation: Consider optimizing images to boost LCP, which may be simpler than adjusting complex layouts to enhance CLS.
• Website Purpose: Keep in mind the purpose of your WordPress website. For a content-heavy site, boosting LCP is a top priority. For eCommerce websites, prioritizing CLS makes more sense.
• Fast Hosting Provider: You may want to consider switching to a dedicated hosting provider if you are currently using a shared one. This way, you can acquire excellent server performance.
• Lightweight and Essential Plugins: Use only lightweight and essential plugins to optimize performance. Use plugins only on the dedicated pages.

Wrapping it up

Going through the above-mentioned steps helps you to measure and optimize the core web vital score for your WordPress website. It will also help you to provide a better user experience to your website visitors. A good user experience has a big impact on SEO, in addition to having an effect on the conversion rate and bounce rate of your website.

If you’re still facing issues while optimizing core web vitals for a WordPress website, hire WordPress developers from a reputed WordPress development company. WordPress developers will help you to optimize your WordPress websites and get the most benefit in terms of higher ranking in search engines like Google. Also, do not forget to check our other article on a detailed comparison between WordPress vs Drupal.