Web Vitals Monitoring: what is it and how does it work?

In short: Convertmind tracks the Web Vitals score of your most important pages daily and sends an alert when your score gets worse. 

What are Web Vitals?

You might have heard about Google’s Web Vitals as it is getting more attention lately. Google recently announced that the Web Vitals becomes part of the next ranking algorithm update starting in May 2021. 

Google considers three core factors as the most important overall user experience (UX). These Core Web Vitals consist out of three specific Page speed and User interaction measurements: largest contentful paint (LCP), first input delay (FID), and cumulative layout shift (CLS).

Some people even say that Web Vitals are the best way to track your site speed..

Why are Web Vitals important? 

  • For every second delay in mobile page load, conversions can fall by up to 20%;
  • Google plans to use its Core Web Vitals metrics as a ranking factor as mentioned bij Brian Dean from Backlinko; 
  • A fast loading site has a higher conversion rate and is crucial for an optimal user experience; 
  • Unexpected movement of page content results in a poor user experience;

What is Web Vital monitoring? 

Convertmind checks your Web Vital scores every day, for mobile and desktop devices. When the score, you’ll receive an alert in the app and via mail. This way you can stay on top of the game and spot weak site performance early on.

We’ve heard plenty of stories of people making changes to a page resulting in slowing down the site without even realizing it. Convertmind notices these types of speed issues quickly. 

When a landing page is loading slower, the time to interact decreases or visual stability is getting worse, Convertmind will send you an alert.

Web Vitals monitoring helps you understand what your users are really experiencing on your website. 

Which Web Vitals metrics are monitored?

Largest Contentful Paint (LCP)

Largest Contentful Paint (LCP) is an important, user-centric metric for measuring perceived load speed. It marks the point in the page load timeline when the page’s main content has likely loaded. A fast LCP helps reassure the user that the page is useful.

LCP is the time between landing on a page and seeing the majority of the content. 

Cumulative Layout Shift (CLS)

Cumulative Layout Shift (CLS) is an important, user-centric metric for measuring visual stability because it helps quantify how often users experience unexpected layout shifts. A low CLS helps ensure that the page is delightful.

CLS measures the degree to which elements are shuffled around the page. 

Total Blocking Time (TBT)

Total Blocking Time (TBT) is an important metric for measuring load responsiveness because it helps quantify the severity of how non-interactive a page is prior to it becoming reliably interactive—a low TBT helps ensure that the page is usable.

TBT shows how unresponsive a page is before it becomes fully interactive.

Performance score

The Performance score is a weighted average of all metric scores in the Web Vitals report. It is the overall metric to quickly see how your site speed is performing. 

Which pages are tracked?

For all existing sites in your account – or when you add a new site – we track by default the top 10 most visited landing pages, based on your Google Analytics data.

Remove a tracked Web Vitals page

You can change the tracked pages via the settings tab, click on monitoring and find Web Vital Pages. 

Add new a Web Vitals page

You can track up to 10 pages; so if you’d like to track a new page, you have to delete one and click add a new page. Fill in the desired URL (domain + page) and hit save page

When do I get an alert?

When the overall performance score decrease by more than 10 points for two days in a row you’ll get an e-mail alert. We’ve built in the 2-day check so the drop in performance is not a fluke. 

How to switch between desktop and mobile performance? 

Convertmind checks your Web Vitals metrics for desktop and mobile separately. You can view the results for desktop and mobile by toggling between these two options in the ‘monitoring‘ and Web Vitals overview.

Can I see the complete Web Vitals report? 

Yes, to view the full Web Vitals report click on a page in the Web Vitals overview and then click on the ‘view latest report’ button. 

You could also download a copy of the report by click on the tree dots in the top-right corner.

Do I have to activate anything? 

Nope! The Web Vital monitoring works straight out of the box when you add a new site to your account.