The Core Web Vitals will become increasingly important in 2021. This is evident not only from the implementation in Search Console, but also from the statements that Google makes about this. In May 2021 if there is an update that will include the Core Web Vitals and UX signals.

What are the Core Web Vitals

The Core Web Vitals consist of the Largest Contentful Paint (LCP), First Input Delay (FID) and the Cumulative Layout Shift (CLS). Warnings for this can be found in the Search Console report “Site vitality”.

  • The Largest Contentful Paint (LCP) measures the time it takes to display the main content of the page ( above the fold ) to measure. Ideally, this content is loaded within 2.5 seconds.
  • The First Input Delay (FID) measures how fast the page is interactive. It is ideal if it is interactive within 100 milliseconds.
  • The Cumulative Layout Shift (CLS) measures how many unexpected movements are happening on the page. So these are flickering or sliding elements in the top fold of the page. An ideal score for this is lower than 0.1.

How do you measure the Web Vitals?

Search Console provides a general overview of how you perform on the pages. If you want to know exactly how a page performs, it is best to test it live in Pagespeed Insights . Do this incognito so that the results are not affected by extensions.

When you have tested the page, you can see how the Web Vitals look for both desktop and mobile.

Core Web Vitals

Practice data vs lab data

One thing is very important to keep in mind. The Core Web Vitals are tested in a lab environment as well as in practice. The Search console report contains data from practice. As a result, the url you are testing may score well for you, but generally not. The page should be optimized so far that it also works well with people on other devices.

Do all Core Web Vitals have to be OK?

Probably. Question time with Google’s John Mueller shows that all Core Web Vitals matter to Google. From May 2021, these will be included in the ranking factors, so you better make sure they are in order.

Do all Core Web Vitals have to be OK?

Probably. Question time with Google’s John Mueller shows that all Core Web Vitals matter to Google. From May 2021, these will be included in the ranking factors, so you better make sure they are in order.

How do I improve my Core Web Vitals?

Improving the Core Web Vitals can be quite difficult. To start improving, you first need to know exactly where things are going wrong. Google does not say much about this in the reports. These only indicate that the scores are too high.

To know exactly where things are going wrong, you can simply use the performance report. Below is a step-by-step plan how you can best use this.

  1. Start Chrome in incognito mode (cCtrl + shift + N).
  2. Press the F12 key
  3. Go to the tab “performance”
  4. Enter the web address you want to measure, but don’t load the page yet.
  5. Start the test by pressing Ctrl + E
  6. Load the page.
  7. When the page is completely ready, stop the test.

Your result should look something like this:

Core Web Vitals

Now you can see in the waterfall where the FCP , CLS and any FID occur. If you move your mouse over it, you will see on the website exactly where the element is that slows down or shifts.

Now that you know exactly where things are going wrong, you can adjust this in your code or CMS. How this should be adjusted depends quite a bit on what goes wrong. It is best to engage a Front-end specialist for this if you are not familiar with this yourself.

If you have any questions about the Core Web Vitals, please Contact us!