Post by account_disabled on Mar 5, 2024 0:08:16 GMT -5
What is CLS? Cumulative Layout Shift explained The Core Web Vitals update has now spread widely and many are moving to optimize their website scores. In other articles proposed by our blog, we have already addressed in detail how to optimize the LCP metric, or Largest Cumulative Paint. However, the Core Web Vitals are divided into 3 different scores, so in addition to the LCP value there are 2 others: the CLS and the FID. In this article we will see in detail how to optimize the CLS, the most complex metric to fix in my opinion. CLS indicates unintentional layout variation when loading a page.
This problem is often present in many WordPress sites Venezuela Phone Number because during the theme development phase, not much attention is paid to the management of JavaScript and CSS for above the fold. This metric influences not only the Web Vitals score, but also the user experience (UX), for example if the user who is visiting the page is ready to click on an element, but in the meantime the loading changes its position, it will mean that the If the user presses another element of the page, for example a banner or a link that he did not want to press, or another example on a blog article, the CLS could make the user lose the reading point, who will find himself having to find the point again.
The CLS is also strongly influenced by the type of connection of the device. We remind you that most users connect from a "slow" network so it is even more important to consider this aspect. In short, we understood that it is not pleasant to have these changes in layout on your website. Causes of Cumulative Layout Shift. The causes that lead to a poor CLS score can be many and should be addressed on each individual project. The most common, however, could be these: Tags images, iframes, videos, embeds without definition of height and width (unknown dimensions) Web Fonts Causing FOIT/FOUT ( How to Optimize Web Fonts ) Injected JavaScript content Actions waiting for a network response before updating DOM Management of asynchronous CSS files and inline CSS.
This problem is often present in many WordPress sites Venezuela Phone Number because during the theme development phase, not much attention is paid to the management of JavaScript and CSS for above the fold. This metric influences not only the Web Vitals score, but also the user experience (UX), for example if the user who is visiting the page is ready to click on an element, but in the meantime the loading changes its position, it will mean that the If the user presses another element of the page, for example a banner or a link that he did not want to press, or another example on a blog article, the CLS could make the user lose the reading point, who will find himself having to find the point again.
The CLS is also strongly influenced by the type of connection of the device. We remind you that most users connect from a "slow" network so it is even more important to consider this aspect. In short, we understood that it is not pleasant to have these changes in layout on your website. Causes of Cumulative Layout Shift. The causes that lead to a poor CLS score can be many and should be addressed on each individual project. The most common, however, could be these: Tags images, iframes, videos, embeds without definition of height and width (unknown dimensions) Web Fonts Causing FOIT/FOUT ( How to Optimize Web Fonts ) Injected JavaScript content Actions waiting for a network response before updating DOM Management of asynchronous CSS files and inline CSS.
