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What Is Core Web Vitals?

What Is Core Web Vitals

We talked about Core Web Vitals and how they will impact organic ranking starting in June.

In a few weeks, in mid-June, Google will begin to take into account the famous “Core Web Vitals” (or main web metrics) when providing results in the SERPs.

Google has accustomed us to broadcasting from time to time, information about possible changes or new implementations that will influence the positioning. This generates great convulsions in the world of SEO, producing debates and many rivers of ink in blogs specialized in positioning.

The leading role of the mobile version of a website, the security of the page, the https protocol… and now the “Core Web Vitals”.

The current situation is similar to that of 2010 when the Mountain View company began to value the loading speed of a page as a ranking factor. All the webmasters and SEOs of that time focused on optimizing the loading time so as not to lose positioning, achieving a notable improvement in the loading of websites on the Internet in general. Perhaps this time the same thing will happen, and in the end, thanks to the efforts to adapt to the standard values ​​of these KPIs, users will find that the quality of the websites are better.

What Is Core Web Vitals?

The Core Web Vitals are three indicators that give us an image of the performance and user experience of a website. These indicators will be taken into account by the Google algorithm (among other parameters) when ordering the search results.

Which are? LCP (Largest Contentful Paint), FID (First Input Delay) and CLS (Cumulative Layout Shift).

LCP (Largest Contentful Paint) Loading

The LCP is related to the load time of a web page and the speed with which the main visual elements are displayed to the user once they have clicked.

What value would be correct? According to Google, websites that have a good user experience are those that have an LCP value of less than 2.5 seconds from the start of the page load. A score will be considered bad if it exceeds 4 seconds.

What can you do to improve the PCL?

  • Improve the response time of the server, and have a hosting with reduced TTFB. Google recommends a value of less than 200 ms for the TTFB. To calculate your TTFB you can use KeyCDN.
  • Enable site caching.
  • Compress and optimize the images on your website.
  • Optimize web fonts.
  • Optimize or block the JavaScript and CSS rendering of your site during load.
  • Implement lazy loading of images.
  • Optimize the loading of static resources with a CDN service.

FID (First Input Delay) Interactivity

This indicator refers to the interaction time, that is, or what it takes for a web page to allow the user to interact with it.

What value would be correct? A page will offer a good user experience if the FID (First Input Delay) is less than 100 milliseconds. The score will be bad if it exceeds 300 milliseconds.

What can you do to improve the FID?

  • Reduce execution time of javascript code.
  • Reduce javascript elements.
  • Reduce the transfer volume to the server.
  • Reduce requests to the server.
  • Reduce code from external services or third parties.

Additionally, all the recommendations mentioned to optimize the LCP also apply to the FID.

CLS (Cumulative Layout Shift)

This KPI measures the stability of the page elements, in the sense that a user clicks on a place where they did not want to, due to a fleeting movement of a page element.

What value would be correct? Google considers a good CLS value below 0.1. Greater than 0.25 would be considered a poor CLS score.

What can you do to improve the CLS?

  • Specify in the HTML code the dimensions of the visual objects (image and video attributes).
  • Avoid injecting or modifying content dynamically.
  • Avoid animations that modify the position of objects.
  • Do not insert content above existing content.
  • Specify ad sizes and iframes.

How Much Weight Will These Kpis Have In Positioning?

The organic positioning of a site is calculated by taking into account more than 200 factors, so it is expected that these main web metrics act in conjunction with others and do not, by themselves, have a significant weight.

In line with this, Google’s John Mueller expressed in a recent Q&A session that “just because your website is faster on Core Web Vitals than some of your competitors doesn’t necessarily mean that, in May, jump to the number one position in the search results.” He then added that if the results are not as expected, he is also not going to “destroy your site and remove it from the index”.

However, as Mueller himself says later, the Core Web Vitals measure something tangible that can affect users’ browsing experience, so it’s important to keep them in mind and work to keep websites on the right values.

Free Tools to Measure Core Web Vitals

Page Speed ​​Insights: the well-known tool to find out the performance of our website shows since December 2020 the data of Core Web Vitals.

Search Console – You can find the Core Web Vitals in the Improvements-Core Web Metrics section. If you have your website registered in Search Console and you have alerts activated, it is possible that you will already receive warnings if there are problems in the values.

Chrome DevTools: If in the Chrome browser you press F12 (enable DevTools) and then switch to the “Performance” tab, you can activate the “web vitals” check to get detailed results of the site performance analysis.

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