What are Core Web

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Announced by Google in May 2020, Core Web Vitals are specific metrics that assess the quality of a user's experience on a website.

These web signals, considered Whatsapp Number List  essential, have become extremely important for SEO after Google officially announced that they will become ranking factors from 2021.

Although some time has passed since then, many websites still lack performance.






In this article, we'll take a look at what Google's Core Web Vitals are, how they impact SEO, and why you should improve your website's performance.

What are Core Web Vitals?
Core WebVitals is a set of metrics that evaluate a user's experience on a website in terms of performance, stability, and responsiveness.

They are defined as essential and have become important not only for UX but also for SEO.

And while there are other user experience signals, these are considered the basic parameters that a high-quality website must adhere to.

In particular, these are:

Largest Contentful Pain (LCP)

First Input Delay (FID)

Cumulative Layout Shift (CLS)


Page-Experience-Signal

Let's analyze them one by one.

Biggest Content Pain (LCP)
Largest Contentful Paint (LCP) is the first of the Core Web Vitals metrics and measures the loading speed of content identified as main (in other words, largest in size in bytes) within a viewport.

This parameter is calculated starting from the first page load and does not take into account all elements, but only focuses on images, videos or blocks of text.

In the same way, the value is not calculated on the entire page, but only on the part visible during loading, discarding cropped or hidden elements.

It's also worth knowing that the size of images is calculated based on the lower value between the internal and visible values.