Web Core Vitals

What is Core Web Vitals ?

It is a program initiated by Google that aims at improving the user experience on the web by best meeting their needs.

How does the Core Web Vitals work ?

Google's algorithms are constantly evolving to better take into account the user experience on the web. With the Core Web Vitals, the signals put in place by Google will intensify to provide increasingly relevant answers to the needs of Internet users.

To do this, Google has established its program around three main pillars (or indicators) that will measure the effectiveness and relevance of a site's UX : 

• the LCP (Largest Contentful Paint). This indicator will evaluate the loading time of the main content of a page on the screen, i.e. the content visible on the screen when arriving on the page.
• the FID (First Input Delay). This indicator will analyze the degree of interactivity of your site by measuring the time taken between a user interaction with the page and the response time of the browser after this interaction.
• CLS (Cumulative Layout Shift). This indicator will analyze the visual stability of a site and the frequency at which a page undergoes unexpected changes. For example: a button that appears late after loading causing part of the page content to shift downwards. This forces the user to scroll down the page to find the content. 

How does these elements influence SEO ?

These signals will slowly be integrated as elements contributing to the ranking for SEO. However, even if the user experience is more and more privileged by Google, the "traditional" SEO signals should not be neglected and the quality of a content remains, for the moment, the most important element to get a better ranking.