HomeBlogWordPressImprove Your WordPress Core Vitals : Essential Tips

Improve Your WordPress Core Vitals : Essential Tips

WordPress Core Web Vitals have become an essential aspect of website optimization and user experience. These metrics represent the fundamental aspects of web performance, directly impacting your site’s ranking on search engines like Google. In this blog post, we will delve into various techniques to measure and improve your WordPress site’s Core Web Vitals scores.

Understanding Core Web Vitals

Core web vitals are a set of metrics introduced by Google to measure user experience on websites. These vitals comprise three specific page speed and user experience measurements, including Largest Contentful Paint (LCP), First Input Delay (FID), and Cumulative Layout Shift (CLS). A good score indicates that your site loads rapidly for users, providing an optimal browsing experience.

Largest Contentful Paint (LCP)

LCP measures the time it takes for the largest content element on a webpage to load fully. This metric is crucial because it represents how quickly users can see and interact with the main content of your website. To achieve a good LCP score, aim for 2.5 seconds or less.

First Input Delay (FID)

FID measures the gap between when a user initiates an action on your website – such as tapping a button or link – and when their input is handled by the browser. A low FID means that your website responds promptly to user inputs, ensuring seamless navigation throughout its pages. Aim for an FID of 100 milliseconds or less to provide excellent interactivity.

Cumulative Layout Shift (CLS)

CLS evaluates visual stability by measuring unexpected layout shifts during page loading. High CLS scores indicate unstable layouts prone to annoying disruptions like buttons moving unexpectedly while users attempt clicks. Aiming for a CLS score below 0.1 ensures smooth browsing experiences for your visitors.

By focusing on these core web vitals, you can optimize your WordPress site to provide a better user experience and improve its performance in search engine rankings. In the following sections, we will discuss various techniques and tools that can help you achieve excellent core web vitals scores.

Understanding Core Web Vitals is essential for improving website performance and user experience, so it’s important to understand how your WordPress site measures up. Checking the speed scores of your WordPress site can help you identify areas where improvements are needed in order to achieve optimal loading times and higher rankings on search engine results pages.

How to Improve Your Core Web Vitals in WordPress (7 Tips)

Improving your Core Web Vitals score in WordPress is not that difficult. Using some essential performance optimization tips you can easily pass the Core Web Vitals score.

1. Optimizing Your WordPress Hosting

The performance of your website heavily relies on the WordPress hosting company you choose. A good hosting provider can optimize their servers for WordPress, providing a strong foundation for your website to build upon. Our top recommendation is SiteGround, which is one of the officially recommended WordPress hosting companies and also used by WPBeginner. SiteGround utilizes Google Cloud Platform and ultrafast PHP to provide high-performance servers. 

They have an SG Optimizer plugin that automatically enhances performance and enables built-in caching, similar to WP Rocket’s but with additional features. However, note that this plugin only works on SiteGround hosting accounts, available in all plans including the basic option. If you are using another WordPress hosting provider, we suggest using WP Rocket along with other tools to improve Core Web Vitals score. As the best caching plugin in the market, WP Rocket simplifies caching setup without requiring technical server management skills.

2. Improving Largest Content Paintful (LCP) Score

The Largest Contentful Paint (LCP) is the biggest content element that appears within the visible area of a webpage. This could be an image or text, such as the main picture on a blog post or the article itself. A higher LCP score can be achieved by reducing the loading time of this content. To identify which element is considered for LCP, you need to check the test results and expand the ‘Largest Contentful Paint Element’ tab. This will show you all elements that contribute to your LCP score. If it’s a large image, consider replacing it with one that has a smaller file size and lower quality. For text, try breaking it down into paragraphs and headings..

3. Improving First Input Delay (FID) Score

To enhance the First Input Delay score, which measures the duration between a user’s click and their browser starting to process elements, you can follow some simple tips. One of them is to opt for better web hosting or managed WordPress hosting services. Another effective method is to utilize a caching plugin such as WP Rocket that offers an inbuilt feature for optimizing file delivery. To get started with this technique, install and activate the WP Rocket plugin on your website and navigate to Settings » WP Rocket page, then switch to the File Optimization tab.

Scroll down to the bottom of the page and check the box next to the ‘Load JavaScript deferred’ option.Don’t forget to click the ‘Save Changes’ button to store your changes.

Deferring JavaScript allows your website to load without waiting for JavaScript to be loaded. This improves First Input Delay (FID) Score for pages where JavaScript may be the cause.

4. Improving Cumulative Layout Shift (CLS) Score

The CLS score can be negatively impacted when certain elements on a webpage load slowly, causing other items on the screen to move. To identify which elements are affecting the CLS score, you can expand the ‘Avoid large layout shifts’ tab in Page Speed Insights results. This will display a list of elements that are causing the most significant impact during page load. To prevent any visual layout shifts from occurring while items load, it’s important to inform browsers about element dimensions such as width and height for images, video embeds, Google AdSense ads, and more. WordPress automatically adds height and width attributes to images but you should still check all other media types particularly embeds to ensure they have these attributes defined. You can use Inspect Tool by right-clicking in your browser and selecting Inspect to open the developer console. From there, you can click on different page elements to highlight their source code and verify if they have defined width and height attributes or not.

5. Eliminating Render Blocking Elements

Render blocking elements can have a negative impact on your website’s Core Web Vitals score and user experience. These elements are typically slower to load and prevent other elements from loading first, causing delays in page rendering. The Page Speed Insights tool can identify these render blocking elements, which often include JavaScript or CSS files added by WordPress plugins or third-party tools such as Google Analytics, Facebook Pixel, and Google Ads. However, removing or optimizing these render blocking elements may not be easy for novice users since they are usually added programmatically by various plugins and themes.

6. Properly Sizing Images in WordPress

Lower Core Web Vitals scores can often be attributed to the use of large images on WordPress websites. Many users tend to upload high-resolution images that take longer to load and are not always essential. This issue is further exacerbated for mobile users, as they would have to wait for a larger file size even though the image is resized by the responsive WordPress theme and platform.

7. Using a CDN to Server to Improve Your Core Web Vitals Score

To improve the user experience of your WordPress website, you can optimize Core Web Vitals. One way to do this is by using a content delivery network (CDN), which is a third-party service that allows static content like images and CSS to be served from multiple servers around the world. By doing so, users can download these files from servers that are closest to them, reducing load times and improving overall performance. One option for implementing a CDN on your site is through Sucuri’s cloud firewall app, which includes built-in CDN services as well as protection against malicious requests. Another option is Cloudflare’s free CDN service, which also provides basic firewall protection and can help boost your Core Web Vitals score. In addition to optimizing performance, it’s important to ensure the security of your website as well. Following our WordPress security checklist can help protect against spam and DDoS attacks. To further enhance user experience without sacrificing speed or performance, consider utilizing high-quality media content created with top video editing software or webinar platforms.

Utilizing Google PageSpeed Insights for Optimization Tips

Google PageSpeed Insights (PSI), another popular tool designed by Google itself, evaluates both mobile and desktop versions of a webpage based on its performance. PSI offers valuable data about opportunities for enhancement along with detailed diagnostics related to core web vitals scores. Here’s how you can use Google PageSpeed Insights:

  • Visit the Google PageSpeed Insights homepage.
  • Enter your website URL in the input field provided.
  • Click the ‘Analyze’ button to initiate the evaluation process.
  • Review both mobile and desktop scores, along with suggestions for improvement under each category (LCP, FID, CLS).

Incorporating these tools into your regular site maintenance routine can help you monitor and enhance your WordPress website’s performance. By identifying areas of concern and implementing suggested optimizations, you’ll be well on your way to achieving higher core web vitals scores and providing a better user experience for visitors.

Verifying the WordPress Site Speed Scores is critical for a successful website, and by employing the proper optimization tactics such as image shrinking and mobile-friendly design you can enhance your site’s performance. Image Optimization Techniques are key to ensuring that your website loads quickly on all devices.

Image Optimization Techniques

Large images can significantly impact the loading time of a webpage. By optimizing images, you can improve website performance and provide a better user experience. In this section, we will discuss two essential techniques for image optimization in WordPress: compressing images using the Smush plugin and implementing mobile image optimization with WebP Express.

Installing Smush Plugin for Image Compression

Smush is a popular WordPress plugin that helps reduce file sizes without compromising on quality. It automatically compresses your uploaded images while retaining their visual appeal. To install and use Smush, follow these steps:

  • Navigate to the Plugins menu in your WordPress dashboard.
  • Select ‘Add New’ and search for ‘Smush’ in the search bar.
  • Click ‘Install Now’ followed by ‘Activate.’
  • In the new Smush tab, configure settings as per your requirements and start optimizing existing or newly uploaded images.

FAQs in Relation to WordPress Core Vitals

Core Web Vitals are a set of performance metrics that measure user experience on your WordPress site. They include Largest Contentful Paint (LCP), First Input Delay (FID), and Cumulative Layout Shift (CLS). Improving these metrics can enhance user satisfaction, search engine rankings, and overall website success.

Core Web Vitals focus on three aspects: loading speed, interactivity, and visual stability. LCP measures how quickly the main content loads; FID assesses responsiveness to user input; CLS quantifies unexpected layout shifts. These vitals help developers optimize their websites for better usability and SEO performance.

Your Core Web Vitals may have failed due to factors like slow server response times, large media files, unoptimized images or videos, excessive third-party scripts or plugins, improper caching settings, or inadequate hosting resources. Identifying specific issues using tools like GTmetrix or Google PageSpeed Insights can help improve your scores.

To improve your WordPress site’s Core Web Vitals, optimize images with plugins like Smush, use video hosting solutions such as Vimeo or YouTube embeds for faster load times, upgrade hosting plans if needed, minify CSS/JS/HTML files using tools like Autoptimize, and manage third-party scripts effectively.


In conclusion, optimizing your WordPress site’s Core Web Vitals is crucial for providing a better user experience and improving search engine rankings. Checking your site speed scores using tools like GTmetrix and Google PageSpeed Insights can help identify areas that need improvement.

Image optimization techniques, such as installing the Smush plugin and implementing WebP Express, can significantly improve mobile optimization. Upgrading hosting plans, minifying CSS, JS, and HTML files, and managing third-party scripts are other effective strategies to enhance performance.

If you’re looking to optimize your WordPress website’s Core Vitals or have any other web development needs, contact Amadeus Consulting today for expert assistance.

Our passion is empowering businesses to connect with customers and scale their digital presence. With strategic website building and SEO, we help companies expand their reach and grow their brand online. Let Amadeus Consulting build and optimize your website!

amadeus consulting logo

© 2024 · Amadeus Consulting