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What are the Core Web Vitals?

  • Writer: Mariana Boazak
    Mariana Boazak
  • Sep 12, 2023
  • 5 min read

Updated: Sep 29, 2023

In the world of search engine optimization (SEO), there's one undeniable truth: Google's algorithms are always evolving, and so must our strategies. One of those evolutions is the emergence of Google Core Web Vitals.

So, what is web vitals exactly? At its core (pun intended), Core Web Vitals represent a set of three performance metrics measuring the user experience of web pages: loading performance, interactivity, and visual stability of a page. In this post, we will go through these metrics, their importance, and how to navigate issues that may arise.

Cellphone with image of metrics for googles core web vitals with LCP, FID, and CLS

Understanding Core Web Vitals

As mentioned before, Core Web Vitals focus on three main aspects of user experience. They are loading performance (measured by largest contentful paint), interactivity (measured by first input delay), and visual stability of a page (measured by cumulative layout shift). Let’s dive deeper in the metrics that are used to quantify these aspects.

  1. Largest Contentful Paint (LCP metric): This measures how quickly the main content of a page loads. For a seamless user experience, LCP should occur within 2.5 seconds of landing on a page.

  2. First Input Delay (FID metric): Reflecting a page's interactivity, This measures a page's responsiveness or the time taken for a page to react to a user's first action. An ideal FID is less than 100 milliseconds.

  3. Cumulative Layout Shift (CLS metric): Ever experienced surprise shifts on a webpage? CLS quantifies that visual stability. A good CLS score is less than 0.1.

The Importance of the Core Web Vitals Explained


Going beyond the metrics, we want to have an understanding of why these vitals are just so significant. Here, we will dive deeper into why it’s important to pay attention to the Core Web Vitals.


  1. User Experience SEO isn't just about pleasing algorithms; it's about serving real users. While classic SEO elements like backlinks and content quality remain paramount, slow-loading pages, unresponsive buttons, and unexpected layout shifts can frustrate users, leading to higher bounce rates and negatively impacting SEO. A website that offers a positive user experience will likely keep visitors engaged, reducing bounce rates. This not only improves organic rankings but also fosters trust and authority among visitors. Google recognizes this, which is why user-centric metrics like Core Web Vitals have become ranking factors.

  2. Ranking Factor While backlinks, content quality, and keyword relevance remain significant, Core Web Vitals address the qualitative aspect of a website. In essence, they measure how users feel when they interact with a page. With Google incorporating these metrics into its ranking algorithm as of 2020, their effect on organic visibility is undeniably significant. This means that websites adhering to these standards will rank higher in search results.

  3. Mobile vs. Desktop Google evaluates Core Web Vitals on both mobile and desktop. Given the increasing mobile usage, optimizing for mobile is crucial. Moreover, Google's mobile-first indexing means that Google predominantly uses the mobile version of the content for indexing and ranking.

  4. The Future of Web Vitals Finally, it’s important to note that Google has indicated that the set of metrics within Core Web Vitals is expected to evolve over time. Google's focus on user experience is not fleeting. As the virtual landscape continues to grow, these standards will evolve, making it essential to stay updated and in tune with these changes.

Team strategizing at a table

Navigating the Core Web Vitals Assessment: A Step-by-Step Guide

So what happens if you've recently encountered a failed Core Web Vitals assessment or are battling with poor URLS? Well, with an understanding of Google’s Core Web Vitals’ metrics and their significance, it’s an opportunity to recalibrate and fix the issues on your website so that users have a quality web page experience.

Understanding and optimizing Core Web Vitals is not just about ensuring a seamless user experience; it's about enhancing your site's visibility on search engines. Here’s our recommendations and a step by step guide to help you monitor these crucial metrics and navigate any issues that arise.

  1. Prioritize Web Performance Before diving into individual metrics, the overall speed and performance of your website should be your top priority. · Speed Score Assessment: Begin by analyzing your site’s speed score. This gives you a foundational understanding of where your website stands. · Tool to Use: Google's PageSpeed Insights. It's a straightforward tool that not only provides scores for both mobile and desktop but also offers actionable recommendations to improve.

  2. Delve Deep into Core Web Vitals To get an in-depth understanding of how your site performs against Core Web Vitals metrics, leverage these tools: · Google Search Console: This offers both web ranking reports and Core Web Vitals reports categorizing URLs as "Poor," "Needs Improvement," or "Good." It's an excellent tool for a broad overview. · PageSpeed Insights: Beyond the speed score, this tool offers insights into individual Core Web Vitals metrics and suggests areas of improvement. · Web Vitals Chrome Extension: For those who prefer real-time data, this browser extension provides on-the-spot Core Web Vitals metrics for any page you're viewing.

  3. Engage in Continuous Monitoring The digital landscape evolves rapidly. To ensure you're always ahead: · Stay updated with the next core web vitals guidelines. Google frequently updates its recommendations and guidelines. · Dedicate time for regular check-ins. Whether monthly or quarterly, regular monitoring ensures you're proactive rather than reactive.

  4. Address Issues with Proven Strategies Based on the feedback from the tools: · LCP Improvements: o Optimize images and use modern formats like WebP. o Implement lazy loading for off-screen images. o Ensure server response times are swift. · FID Enhancements: o Minimize or defer JavaScript to ensure pages are interactive quickly. o Use a browser cache to leverage cached resources. o Optimize your site's CSS to ensure a smooth user experience. · CLS Stability: o Always use set dimensions for images and embeds. o Avoid inserting new content above existing content unless it's in response to user interaction. o Ensure ads and other dynamic elements have a reserved space to prevent unexpected layout shifts.

  5. Seek Expert Assistance Even with the best tools and strategies at hand, sometimes the expertise of a specialist can make all the difference: · Why Seek Help? An expert can provide insights beyond the obvious, pinpointing granular issues and offering tailored solutions. · Who to Look For? Partner with experts who specialize in core web vitals optimization services. Their experience and insights can turn poor URLS into optimized, user-friendly ones, ensuring your site not only meets but exceeds Google's standards.

With Core Web Vitals incorporated into Google’s ranking algorithm, their influence on organic visibility is undeniable. Websites that align with these standards have a competitive advantage in search results, potentially driving more organic traffic. Just remember that the integration of Core Web Vitals underlines the importance of the user experience. Not only will following these standards benefit SEO, but it will also ensure that visitors to your website have a valuable experience, boosting credibility and engagement.



 
 
 

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