What is Core Web Vitals? Why LCP, FID and CLS Are Ranking Factor?

Google has already announced its biggest algorithm updates which focus on Core Web Vitals. This is an important signal that Core Web Vitals can make a significant difference in the status of organic search results.

Core Web Vitals is a trending and important topic in the SEO industry right now. And as digital marketer, we must be hearing this term a few times a day. Core Web Vitals is an initiative by Google to provide a unified guide to the quality signals needed to provide a great web user experience.

Over the years Google has provided many tools to measure and report the performance of a website. Some developers are familiar with using these tools, but others find it difficult to keep up with the abundance of tools and metrics.

As per a study conducted, a majority of people are unaware of Core Web Vitals and why they are important for their business and their website.

What is Core Web Vitals?

Also known by the acronym CWV, Google’s Core Web Vitals key features include three-page speed metrics that affect the experience as your website visitors land on every page of your site. It is provided in the form of a score similar to the Google Ads quality score.

According to Google, the metrics of Core Web Vitals will change over time, but they fall currently into three categories:


The Largest Contentful Paint (LCP) measures the time it takes for most of the first screen display of a page to be visible. If the LCP experience is poor, think of a website that displays a blank white screen for a few seconds while loading content. To provide a great user experience, you should run LCP within 2.5 seconds of page loading.


The First Input Delay (FID) measures the time it takes a visitor to take action. Poor FID experiences include not being able to click on another page, add a product to your cart, or enter a query in the site’s search bar for a period of time. The FID of the page must be less than 100ms to provide a good user experience.

Visual Stability:

Cumulative Layout Shift (CLS) measures the vertical displacement of pages while loading interactive elements, images, ads, and other elements. Visitors will get a worse CLS experience on sites where the link they are trying to click suddenly moves two inches down the screen or the text they are reading moves unexpectedly out of the screen. The CLS of the page should be kept below 0.1 to provide a good user experience.

These three key basic elements of core web vitals (Largest Contentful Paint, First Input Delay and Cumulative Layout Shift) will soon form the basis for measuring the load, interactivity, and visual stability of your website.

Why are core web metrics important?

After all, Google is a business, and its business goal is to show users the best search results. They use various metrics to measure a good user experience and incorporate them into ranking algorithms to give users the best web page experience. Core Web Vitals are important because they specifically focus on the user experience of web pages. If your webpage fails Google testing, it will be more difficult to rank your webpage, and therefore your business may lose traffic and visibility on Google search engines.

What should you do now?

If you’re unsure about the potential impact of integrating Core Web Vitals into Google’s algorithms, ask for a free SEO consultation with SetBlue. We can evaluate your website and your competition to see how urgent it is to solve the problems we find.

The Core Web Vitals is a new update by Google that focuses on measuring the user experience of a webpage in accordance with 3 main features: LCP, FID & CLS.

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