Core Web Vitals What are they and how can they be improved?

Core Web Vitals What are they and how can they be improved?

As usual, Google continues to move forward with its goal of improving the quality of its services. In this direction, Basic web vitals This is a set of measures aimed at improving the user experience when browsing websites.

If you want to know how to optimize your site’s Core Web Vitals, read on. Here you will find all the relevant information to optimize them effectively and make the journey of your page pleasant.

Understand Core Web Vitals

Core Web Vitals are a system of metrics that Google uses to calculate the speed, visual stability, and responsiveness of a web page. With these parameters, the user experience on a certain site can be analyzed.

These new metrics bet on easier reading and focus on the performance that pages offer to visitors. From June 2021, Google will begin to evaluate these statistics as a factor of SEO positioning in your browser.

The company’s willingness to refine its algorithms and requirements from time to time is known. On this occasion, the factors that will be taken into account for the positioning of the pages are linked to the user-friendliness of the sites.

In general, it is these pages that allow users to interact quickly with content that will achieve better positions in Google’s SERPs.

Up to 88% of internet users say they don’t come back to websites that aren’t easy for them to use (Fountain).

How do they affect the website?

Although to this day there are over 200 grading factors for the web positioning, Core Web Vitals will come into effect in 2021 and will be in addition to the previous ones.

This means that, in the near future, special attention should be paid to these metrics in terms of SEO strategies. And what do they mean? As we have already said, to the user experience in terms of airworthiness.

In summary: Core Web Vitals will be supplemented by other indicators such as mobile-friendly adjustments, correct use of banners (neither intrusive nor annoying), loading speed and a long etc.

According to Forrester Research, Quoted by Forbes, better UX design could increase conversion rates by up to 400%.

Core Site Web Vitals Diagnostics via Google Search Console

The primary tool for reviewing Core Web Vitals is Google Search Console. It is a user-friendly interface that offers a guided tour of the different aspects of a website that can be optimized.

In the “preview” tab, for example, you will find 4 categories: performance, coverage, experience and improvements.

Google Search Console It also has a help or support site where you can find usage specifications, educational resources, and even a Webmaster Center blog.

The interface even provides graphical information on domain URLs in different colors: optimized ones appear in green; in orange, those that need to be improved; and in red, those affected by negative values.

The diagnosis of Core Web Vitals makes it possible to work fully on the optimization of the site so that it ranks among the first places in search engines.

Metrics reports focus on the outcome of three key values: rendering of largest element with content (LCP), latency of the first interaction (FID) and accumulated design changes (CLS).

Each of these indicators oscillates in a kind of behavioral barometer, between the minimum and the maximum, that Google expects:

Metricas GSC

Core Web Vitals analysis categories range from “fast” to “slow” to “need improvement”, with maximum and minimum values ​​predefined by Google.

How to improve Core Web Vitals?

So improving Core Web Vitals requires a thorough analysis of a website’s optimization needs and then starting to work on those that affect performance the most.

Improve your indicators and your user experience

Next, we will tell you in detail what are the three metrics that make up the Core Web Vitals. What do they measure and what actions can you take to optimize them as much as possible?

LCP optimization o Largest content painting (loading)

The LCP “rendering of the largest element with content ” he is in charge of measuring the loading time of a site; that is, the time that elapses until all web content is accessible and visible to the user.

This gauge is measured in seconds and the optimum speed should not exceed 2.5 inches of load. Google ranks the LCP of pages on a qualitative scale of three: “fast”, “need improvement” and “slow” (poor).

A website can rank low in LCP performance for a variety of reasons: server response time, load time due to heavy resources (videos or images), or crashes in the CSS and JavaScript process, among others.

If you want to improve LCP, you can take some actions related to value for money and code level improvements in both CSS and JavaScript. For example, adjust the size of images and videos to prevent them from slowing down the load.

Mejora el FID o First entry delay (interactivity)

The “first interaction latency” FID is a metric that takes into account how quickly users interact with the website.

That is to say, Measures how quickly elements on a page respond to actions the user takes on it.

Some of the reasons that the FID can be bad are:

  • JavaScript files too large.
  • Blockage in the long task.
  • Poor optimization of page interaction.
  • Do not use a script to run in the background without blocking the page the user is on.

If you want to improve the FID, you can implement some of the following tips:

    • Reduces the impact of external codes. Make sure that there are not too many processes at the same time to keep the operation of the page agile.
    • Reduces JavaScript execution time. Submit only necessary code and remove non-essential items. A web developer can move JavaScript from the primary thread to a secondary thread to improve code performance.
    • Minimize the load on the main thread. If the main thread can’t handle the full load, you can reduce the complexity of your website layouts or styles.
  • Keep transfers small. Avoid transferring large files too frequently so that web reactions are not too slow.

Evita el CLS o Cumulative layout change (visual stability)

The CLS “cumulative design changes” measures the visual stability of the domain. These are elements that alter or overlap with other elements on the page and can lead the user, for example, to click somewhere they don’t want to.

  • How to avoid a low score in CLS? You can check the following actions:
    All elements and attributes must be sized appropriately. If each has their respective assigned space, no strange movement should occur.
  • Animations can cause changes to your website layout – try to avoid them.
  • Avoid pop-ups that don’t have a specific purpose.
  • Optimize the size of your images.
  • Avoid big ads that don’t match the overall aesthetic of the site.

Improve your website load time


Core Web Vitals are here to stay: it’s important that you start analyzing them to get a fully optimized site and, as a result, great web positioning.

The stringency of certain Google requirements is aimed at improving the user experience. Careful monitoring of the parameters that the platform sets will not only help your page rank better – visitors will enjoy browsing it and it will increase your conversion rates.

95% of people think a good user experience is worth it. (Fountain)

In short, what are Core Web Vitals used for? In addition to improving the natural positioning of your website, they optimize the overall browsing experience of a page.

The user experience (UX) it is essential for the development of digital products. Improving the level of customer satisfaction by improving the usability and accessibility of your website will bring you great benefits.

Related links:

Organic positioning: what is it and what are its advantages?

What is link building? Strategies for positioning your website

SEO tools: which ones should you use?

SERPs: What are they and how do they help your SEO?

Meta Tags for SEO: which ones should I put to position my website

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