Overview of Google Core Web Vitals
Google is looking to enhance its Google Search ranking, using page experience signals that measure user experience in quantifiable ways. On November 10th 2020, Google announced it was focusing on Core Web Vitals for its new rankings in May 2021. Google Core Web Vitals will rely on three key points of measurement and we'll explain these in layman's terms below:
Largest Contentful Paint (LCP) measures loading performance. The largest contentful paint is the largest image or block of content on your site that is visible to a user. Anything off screen is ignored. An ideal measurement will be below 2.5 seconds.
First Input Delay (FID) measures interactivity. This is how quickly a user can interact with your page - whether it be a click on a link or filling in a form. An ideal measurement will be less than 100 milliseconds.
Cumulative Layout Shift (CLS) measures visual stability. Just as houses need a good foundation, so does code. If you've ever tried to click on a link and then an advertisement loads, and the page shifts up--that is Cumulative Layout Shift. In other words, how fast the webpage forms its final structure. An ideal measurement will be a score of less than 0.1.
How Cookiebot CMP will affect your Google Core Web Vitals Score
We have been working with Google Engineers to ensure that your Cookiebot CMP implementation will not have a large impact on your Core Web Vitals score. We continuously monitor and improve the performance of our consent service to make sure our banners are as light-weight as possible to not impact your site. Google has an article that describes how Google Page Experience will affect its search results.
How to test your Google Core Web Vitals Score
Google has provided multiple tools to test your Core Web Vitals score including:
One of the easiest tools to use is Google PageSpeed Insights. It will easily analyze your page, provide you with a score across the different Core Web Vitals and offer recommendations on what you can do to increase performance.
Steps to test Google PageSpeed Insights.
- Visit the Google PagesSpeed Insights page.
- Enter the domain name of your site and click the ‘Analyze’ button. (See note below on how to test with the Cookiebot CMP banner)
- You will then see a report - one for Mobile and one for Desktop.
- Your grade will be listed along with ways you can improve your site’s Core Web Vitals performance.
Note: In order for you to test the performance of your site, we don’t display the consent banner on all Google tools. Otherwise, during a test, the banner would show on every page of your site, (as the tools cannot provide consent) rather than just once - as in a real-life scenario. This would not give an accurate representation of performance. To allow for testing of your pages with our consent banner, we have enabled a query parameter that you attach to the end of your site URL that will automatically display the banner for any of your pages. The query parameter is called
g_disable_bot_detection and you assign that a value of 1.
Let’s look at how it works with the cybot.com domain.
If you click this link it will take you to the report for Cybot’s desktop ranking. There is a thumbnail showing the site and you can see there is no banner shown.
Clicking this link will show you the Cybot desktop report, but this time the banner is displayed because we’ve added the
?g_disable_bot_detection=1 query parameter after the domain name. This will work on any page. If you already have some query parameters on your site, just replace the question mark (?) with an ampersand (&) and attach the end of your URL. You can see the banner is now shown in the thumbnail.
Please reach out to us with any Google Core Web Vitals related questions on firstname.lastname@example.org