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6 Common Core Web Vital Mistakes And How To Fix Them


What are core web vital mistakes and how do you fix them? In our previous post, we discussed what Core Web Vitals are and how important they are to your site’s ranking. If your core web vitals score is good, then your site has a greater percentage of being ranked higher.

Since the announcement, businesses have been bombarded with lots of information on the topic of CWV, and UX practitioners, digital marketers, and SEO experts are trying to adapt.

It can be so much to take in, especially as companies are competing to be on the first page of Google’s search engine. In trying to adjust, it’s common to make some mistakes. Before we delve into core web vital mistakes and how to fix them, let’s first recap on what Core web vital is and the three important metrics used to access your score.

What Are Core Web Vitals?

According to Google, Core Web Vitals (CWV) is defined as the analysis of “how your pages perform, based on real-world usage data.” Over the course of 28 days, a Core Web Vitals (CWV) report assesses page load speed, visual stability, and page responsiveness, with results based on actual site visits.

Core Web Vitals are page experience markers that assess a website’s user experience. Simply said, these indications indicate how quickly consumers will be able to interact with your website and the type of outcome they will receive. These indicators also indicate how simple it is for users to navigate the website.

The more smooth your user experience, the better your page experience scores. The visual stability, page responsiveness, and load speed of a webpage are all measured by Core Web Vitals.

There are three core web vital metrics that Google uses to score a user’s experience – Cumulative Layout Shift (CLS), Largest Contentful Paint (LCP) and First Input Delay (FID). 


Largest Contentful Paint (LCP)

The LCP assesses the load speed of a page. It measures how fast and how long it takes for an image or text to load on your site. The largest contentful paint measures how fast the large images, videos, animations and text among others can load and appear on a website.

First Input Delay (FID)

This takes into account the first time a visitor visits your page. The FID measures how responsive and fast your website’s browser can provide the results for users. The goal of the metric is to measure the response time of a page from the moment the user interacts with it. 

Cumulative Layout Shift

The other metric is the Cumulative Layout Shift (CLS). This metric ensures that your site’s pages have no confusing or sudden movements that might interfere with the user experience. The CLS assesses the visual stability and quantifies the number of unexpected layout shifts of the visual page content. 

To summarize, core web vitals are important to a page’s search ranking. 

Core Web Vitals Report

The Core Web Vitals Report is a UX-improvement report that can be found in the Google Search Console’s Enhancement Tab and measures the performance of three core metrics – CLS, LCP and FID. 

Core Web Vital Mistakes

Now that we’ve explained what core web vitals are, the important metrics used to evaluate your site’s user experience and the core web vitals report, let’s now discuss some of the core web vitals mistakes and how to fix them. It’s important to ensure a better user experience. 

Failing To Optimize Content Above The Fold

The first core web vitals mistake is failing to optimize content above the fold. The faster graphic content is visible to website visitors, the more engaging a site will be. In doing that, you must be careful to make sure the information above the fold is prioritized to load fast. Embeds like Google Maps, social media feeds, custom video or widgets from YouTube, photo galleries and image sliders are examples of content that is incorrectly placed above the fold (especially CLS and FID). 

How To Fix It

Add all third-party widgets and rich content below the fold to prevent visitors from suffering unexpected layout changes and a delay in responsiveness. Look into the best data fetching and rendering approaches for custom widgets, such as asynchronous loading and requesting data from the site’s main thread (where a browser processes user events and paints).

The content displayed above the fold is usually ignored and not given priority when it comes to loading first. Carefully think about what you should place above the fold and what matters.

Failing To Optimize Images

After your videos and other embeds, images are often the largest thing on your page. A major problem on heavy-image sites is images are uploaded to the site and shown like that. This error causes the user to wait for the images to load and possibly quit the page entirely, both of which have a negative impact on the CWV score.

How To Fix This

Pictures must be compressed and reduced before being uploaded to the site. To minimize server space, download times, and rendering effort, the images can be compressed.

Using More Than Two Custom Fonts

Web designers frequently employ typefaces from sites such as Google Fonts, Typekit, and other sources. They can easily add extra weight to the page and slow down its loading speed if you don’t use them carefully. Custom fonts can also cause web fonts to flicker while loading websites, resulting in a bad user experience and a spike in CLS, an essential metric that measures the overall stability of content on a page.

How To Fix It

When correcting this error, webmasters may wish to sacrifice style by using only two bespoke font families at limited sizes.

Showing Multiple Images Above The Fold

Since images and background videos are often the biggest assets browsers download on your site, there can be a delay in LCP and a rise in CLS. A large number of videos or images lead to poor performance of both CLS and LCP. 

This is because the browser must download these elements before they can be displayed. Browsers load all images on a page with equal priority by default, regardless of whether the image is at the top or bottom of the screen.

How To Fix It

The best solution is for website designers to focus on a single compressed image above the fold. 

Defer the loading of images that aren’t visible until someone scrolls down to increase the speed with which the top of your page loads. This is also known as lazy loading, and it allows you to deprioritize images that appear deeper down the page, freeing up bandwidth for images that are necessary at the top.

Long Page Load Time

CSS instructs a browser on how to render text, pictures and shapes on a webpage. Unused CSS causes your page to load more slowly.

How To Fix It

Remove unused CSS. Use modular  CSS inclusion themes and plugins which load only the CSS. 

Render-Blocking Resources 

Scripts, cascading style sheets (CSS), and HTML imports are examples of render-blocking resources, which prevent or delay the browser from rendering page content on the screen. When a visitor arrives at your site, their web browser begins reading at the top of the code and works its way down. If it comes across a CSS or JavaScript file during that process, it will stop reading and wait for the file to be downloaded and processed.

How To Fix It

You can delay all non-critical JavaScript and styles. Any script that doesn’t concern what the user would see immediately should be put on hold until the page is fully loaded.

Tools To Help You Check Core Web Vital Mistakes 


Despite Core Web Vitals being a new addition with respect to user experience (UX), various tools are available to measure CWV, detect mistakes and address issues of concern to the users. 

Tips To Improve Your Core Web Vitals 


To improve core web vitals score, you should run a brief test of website performance analysis to see how well your website operates in terms of key web vitals. You can do this with Google tools like Search Console and Page Speed Insights, as well as alternative tools like GTmetrix.

Final Thoughts 

Measuring Chrome Web Vitals is a must if you want to rank properly in Google searches. However, there are mistakes you might have in the process. Overlooking these mistakes will only worsen the user experience and affect your rankings. Remember, the goal is to reduce as much interruption as possible when navigating your site. 

Ready to make your business scalable? You can book a free strategy consultation to get started. 


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