Core web vitals is the latest page experience metric that is becoming an important ranking signal, and set to take effect from May 2021. Learn more about core web vitals and implement the necessary changes in your website without delay.

Google algorithm updates happen throughout the year and keeping up with these updates is a tough task for any organization. The aim of Google is to provide its users with the most authentic and reliable information. For this it has a number of ranking criteria, and page Experience Signals is an important one among them. Mobile friendliness, interactiveness of the website, page load speed etc are some of the signals that are prominent in this category. Here, Google aims to measure the quality of experience a user gains from the website and ranks those websites with great user experience higher in the search results.

So, let’s understand core web vitals in detail.

What exactly are Core Web Vitals?

Core Web Vitals involves three important metrics that defines the user’s experience when a page loads. It covers many factors including how fast the content loads, how quickly the browser responds to an input from the user, and also the stability of the content when it loads the browser.

Here are the three elements that core web vitals consist of:

  • Largest Contentful Paint (LCP) – This measures the speed taken for the main content of a page to load. Google prefers fast loading and gives higher ratings to those pages where the main content loads within 2.5 seconds of a user landing on the page. The main content is often the largest image or text block. So, it is advised to optimize the loading time of large images or videos in your web page.
  • Cumulative Layout Shift (CLS) – Using this element, Google measures how often a user experiences unexpected shifts in the layout when they are on the page. Many times user experience is marred by shifting of the page elements or even the entire layout. Google considers this as a negative user experience and aims to get such distractions minimized in the websites. For a page to have a good CLS it should be less than 0.1.
  • First Input Delay (FID) – This refers to the time a page requires to become interactive. Usually a visitor expects the page to become interactive as soon as the first visual element such as image, button, or scroll bar loads on the page. But there is always a delay in the loading of the first element and the time it takes for the page to respond to our actions. Users get frustrated when this happens and a good user experience translates to minimum FID. The optimal measurement of FID is 100ms.

How will Core Web Vitals affect your website?

Google has several ranking factors and just one signal alone cannot create a big impact on the ranking. However, improving on the elements of Core Web Vitals can offer a good experience to the website visitors. In today’s highly competitive environment, user experience matters a lot to reduce the bounce rate and improve conversions.

So, optimizing your website according to the elements of Core Web Vitals not only improves the ranking but also helps your gain more business. Every business must include this metric in their SEO strategy and correct the issues that impact the user experience on a page.


Core Web Vitals is Google’s ranking metric that focuses on improving the overall user experience from a website. When you optimize your website for Core Web Vitals, you can enhance the user experience and also improve the credibility of the site.

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