Core Web Vitals, What Are They?

Whether you’re the owner of a business running an online site, a content writer uploading online, or even just a casual internet user with a fervent interest in website functionality, chances are sooner or later you will run across the terms Core Web Vitals without really knowing what they mean. Core web vitals are an essential aspect of website management and lacking knowledge on the subject can harm your website SEO rankings, on the other hand, the reason behind why your website may not be performing as well as it potentially could is likely down to incorrect or a lack of utilisation of Core Web Vitals, read on to find out what they are and their uses.

What Are They?

Core web vitals are a form of measurement metrics imposed by Google that in essence, grade a website based on how good it is with several key elements being monitored in order to produce a mark (to learn more about the criteria itself, read the “How are They Graded” section) Scoring highly within this grading system can help retain or even boost the website’s SEO rankings above competitors who score poorly. By being a gauge for functionality this can also give you the peace of mind that visitors to your website are likely happy with the experience. 

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How Are They Graded?

There are several elements utilised within the measuring process in order to gain a rounded idea of how good a website actually is;

Largest Contentful Paint (LCP) 

LCP is the criteria focusing heavily on load times, in a world where the average website bounce rate within e-commerce is 47%, having a speedy website is a must. This is measured from the instant the website is clicked to the point at which the largest block on the page is fully loaded, the timeframe to achieve a good score is 2.5 seconds or quicker.

First Input Delay (FID)

As the name implies, this element of the core web vitals classification focuses on the input delay for the first interaction on the website, to simplify – how long does it take for the website to react the first time you do something. Having a poor first input delay makes the website seem slow and sluggish which may drive away some of the less patient users, the time needed in order to achieve a good rating is 100 milliseconds.

Cumulative Layout Shift (CLS)

Possibly the most frustrating of the core vitals is a poor cumulative layout shift and many have probably actively noticed a lack of this without actually being sure of what it’s called. CLS represents the visual stability of a page while you are browsing, low-quality pages will have layout moving as you scroll or ads popping up during loading making pressing a button a massive hassle! Good websites will look to maintain a CLS of 0.1 or lower.

In order to provide the highest quality user experience websites should look to be good in all aspects of core web vitals, this will also provide a ranking boost hence likely also increasing visitor flow.

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