core web vitals
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Comprehensive Introduction of Core Web Vitals


Comprehensive Introduction of core web vitals


If you are ready to get Google’s user experience metrics and core web vitals for your website, here we are explaining that new ranking factor to you. 


In 2020 Google introduced core web vitals (CWVs). It measures your website’s speed, responsiveness, and visual stability. It allows you to boost your search engine ranking. 


Suppose you are a developer, digital marketer, or business owner and want your website to get long-term success. In that case, you need to optimise web pages’ core web vitals (CWVs), considering the quality of user experience on the internet. 

Core web vitals help you improve user experience and open doors to improve in-depth.

Three core web vitals (CWVs) are there to evaluate your website’s performance to show up on search results if you do it correctly. Those are below:

LCP (Largest Contentful paint): LCP or Largest contentful paint is a significant part of CWVs because it measures the time the page begins loading to the time when the most substantial portion of the page you can see on the screen. It measures the perceived load speed and assures users to understand the page is effective. Before google brought this measuring concept, it was a challenging task for web developers, measuring the load time of main content visible to users.

How do you measure a good LCP score?

If the site strives to get main page loading (Image or a text block) in 2.5 seconds or less, it is considered a good user experience or LCP score.

FID (First Input Delay): FID is the time when a user starts interacting with your website. When a user starts tapping on a button or a link to the time, it responds to the user. Ideally, the web pages should start an interaction in less than 100ms.

CLS (Cumulative layout shift): CLS is vital as it is a user-centric metric that can measure a website’s visual stability. It measures how frequently the user encounters unexpected shifting of the layout. Low CLS always ensures the page is perfect. It occurs between when the page starts loading and when its lifecycle state becomes hidden. The score is less than 0.1 when content should move unexpectedly.

Apart from these 3 CWVs, some additional significant metrics are there to measure for understanding the performance. Those are TTI, TBT, FCP, INP, and TTFB. 

Do CWVs impact ranking?

Core Web Vitals severely impacts bounce rates. As per google, if the page loading time is longer than 1 to 3 seconds, its bounce rate increases by 32%, and if webpage loading time increases by 1 to 6 seconds, its bounce rate increases by 106%.

It impacts ranking by including existing search metrics like mobile friendliness and security. 


How to measure metrics?

A website’s performance metrics usually need to measure in one of these two ways.


Lab: Testing in the lab is essential when any new feature needs to develop before releasing that feature. The lab utilised tools to check a webpage load time in a controlled and consistent environment. 

Field: When the feature is ready for performance, it is vital to measure real users, the time it takes while loading, and how it interacts with users.

If you need to evaluate the performance of web pages, you must use both ways to ensure a better result.