Core Web Vitals you need to monitor in your new eCommerce Store

Are you launching an eCommerce store and want to ensure a great user experience? Monitoring your website’s core web vitals is essential for driving sales, increasing organic traffic, and engaging customers. Core web vitals are metrics that measure how quickly complex page designs load in the browser. They provide vital information about the performance of your site and give valuable insights into any changes that need to be made to improve it. This blog post by Shopify SEO will help digital marketers and business owners understand the seven most important core web vitals they need to keep an eye on — so read on to learn more!



  1. First Contentful Paint (FCP): First Contentful Paint is the time it takes for a page’s first content to appear on the screen. This metric helps you determine how quickly users can view the page and start engaging with it. SEO Service Miami added that if you want your FCP score to be two seconds or less — otherwise, your visitors are likely to get frustrated and leave before they even see what your eCommerce store has to offer.
  2. Largest Contentful Paint (LCP): The Largest Contentful Paint measures how long it takes for the largest element on a page — usually an image or video — to load in the browser window. If your LCP score is too slow, users may feel like they have been waiting forever to see the content on your page. A top SEO Agency added to aim for an LCP score of 2.5 seconds or less for optimal user experience.
  3. Cumulative Layout Shift (CLS): This metric is all about visual stability and it measures how much elements on a page move around as they load in the browser window. If your CLS score is too high, users may feel frustrated because they can’t find what they’re looking for due to constantly shifting elements — resulting in higher bounce rates and decreased conversions. A good CLS score should be between 0-0.1, with anything above 0.25 being unacceptable
  4. Time to Interactive (TTI): TTI measures how quickly your website becomes interactive after loading has started. This metric is important so your users don’t have to wait forever for interactive elements like buttons and links to become available. You want your TTI score to be under three seconds — otherwise, users will get bored and leave your store before completing a purchase.
  5. Total Blocking Time (TBT): This metric measures how much time the browser spends “idling” due to JavaScript or other loading-related tasks on the page. If your TBT score is too high, it means that users may have difficulty interacting with the page while these tasks are running in the background. Aim for a TBT score of less than 300 milliseconds — anything above this number can lead to poor user experience.
  6. First Input Delay (FID): FID measures how quickly interactive elements on a page become clickable after a user interacts with them. This metric is important so that visitors don’t feel like they have to wait forever for an action to be performed. Aim for an FID score of less than 100 milliseconds — anything above this means your website isn’t communicating with the user quickly enough.
  7. Total Blocking Time Percentile (TBT-percentile): This metric measures how much time the browser spends “idling” due to JavaScript or other loading-related tasks compared to other websites across the web. If your TBT-percentile score is too high, it means that users are having difficulty interacting with your page due to sluggish loading times. Aim for this score to be below 25 — anything above this number indicates poor performance.

Last Words

By monitoring these seven core web vitals, digital marketers and business owners can ensure that their eCommerce store is running smoothly and performing as it should be. Doing so will help you boost sales, increase organic traffic, and engage customers more effectively — all of which are essential elements of any successful online business. So make sure you keep track of these core web vitals and take action where needed to improve them in order to get the most out of your eCommerce store.

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