Using Google's Web Vitals to Improve Web Performance

Balázs Barta
5 min readMay 10, 2023

In today’s fast-paced digital world, website visitors have high expectations for website speed and performance. A slow website can lead to dissatisfied visitors, decreased engagement, and even revenue loss. As a result, any website owner or developer must optimize web performance.

Google’s Web Vitals has become a popular tool for measuring and improving web performance in recent years. In this article, we will look at the importance of web performance optimization and how Google’s Web Vitals can help you improve the performance of your website.

Why web performance optimization matters

Web performance is an important factor in search engine optimization (SEO) because it influences page ranking on search engine results pages (SERPs). Slow-loading websites may result in lower search engine rankings, according to Google.

The importance of optimizing web performance cannot be overstated. Slow websites, in fact, can irritate users, causing them to abandon the site, resulting in lost revenue and decreased user engagement. In contrast, a fast and dependable website can increase user engagement, customer satisfaction, and, ultimately, revenue. Google claims that

“53% of mobile site visits are abandoned if pages take longer than 3 seconds to load.”

Another study found that a one-second delay in page load time can result in a 7% decrease in conversions. Users may spend less time on a slow website and view fewer pages, resulting in lower engagement.

Furthermore, with the rise of mobile devices, the importance of web performance grows. Because mobile users have slower internet connections and less powerful devices, web performance optimization is critical. Slow-loading websites have a lower tolerance among mobile users, and they are more likely to be abandoned.

Introducing Google’s Web Vitals

Google has created a set of metrics called Web Vitals to assist website owners and developers in improving web performance. These metrics are divided into three categories: loading, interactivity, and visual stability.

  • The Largest Contentful Paint (LCP) loading metric measures the time it takes for the largest element on a webpage to load. A good LCP score is less than 2.5 seconds.
  • The First Input Delay (FID) metric measures the time it takes for a website to respond to user input, such as clicking a button or filling out a form. A good FID score is one that is less than 100 milliseconds.
  • Cumulative Layout Shift (CLS), a visual stability metric, measures how much a webpage's layout shifts as it loads. A good CLS score is less than 0.1.
  • Time to First Byte (TTFB) measures the amount of time it takes for a user’s browser to receive the first byte of data from a web server after requesting a page. A slow TTFB can indicate issues with server response time or network latency.
  • Time to Interactive (TTI) measures the amount of time it takes for a webpage to become fully interactive, meaning that the user can click links, fill out forms, and interact with the page without any noticeable delay.
  • Total Blocking Time (TBT) measures the amount of time that a webpage is blocked from responding to user input, such as clicking a button or filling out a form. This can occur when the page is busy processing other tasks, such as loading resources or executing scripts.
  • First Contentful Paint (FCP) measures the amount of time it takes for the first element of a webpage to be rendered on the user’s screen. This can include text, images, or other media.

Website owners and developers can identify areas for improvement and make changes to improve website performance by focusing on these metrics. Google has also stated that these metrics have been integrated into the search ranking algorithm, implying that websites with higher Web Vitals scores will likely rank higher in search results.

Improving web performance with Google’s Web Vitals

Now that we have a better understanding of Google’s Web Vitals, let’s discuss how website owners and developers can improve their website scores. Here are a few examples of best practices:

  1. Optimize Images: Large image sizes can slow down website loading times. As a result, website owners and developers should compress images and use web-optimized formats such as WebP, SVG, JPEG, and PNG.
  2. Minimize HTTP Requests: Each HTTP request increases the time it takes for a webpage to load. Website owners and developers should reduce the number of elements on a page and combine multiple files into one to reduce HTTP requests.
  3. Enable Caching: By storing frequently accessed data on the user’s device, caching can help reduce the loading time of a webpage. Website owners and developers should enable caching by configuring a caching strategy and setting cache headers.
  4. Reduce and minify JavaScript and CSS: JavaScript and CSS files can cause website loading times to slow down. Therefore, website owners and developers should minify and combine JavaScript and CSS files to reduce the number of files.
  5. Use Content Delivery Networks (CDNs): By caching content on multiple servers around the world, CDNs can help reduce website loading times. Website developers and owners ought to make use of CDNs to serve users' content from the closest server to their location.
  6. Optimize Server Response Time: The server response time can have an impact on how quickly a webpage loads. Website owners and developers should reduce server response time by using a dependable hosting provider, a performance-optimized Content Management System (CMS), and limiting the use of plugins and add-ons.
  7. Monitor Performance: Website owners and developers should use tools like Google PageSpeed Insights, GTmetrix, and WebPageTest to monitor their website's performance on a regular basis. Monitoring performance can assist in identifying performance issues as well as providing insights into how to improve website scores.

In addition to these suggestions, keep in mind that web performance optimization is a continuous process. Your optimization strategies must evolve in tandem with technology and user behavior. Monitoring and adjusting your website’s performance on a regular basis is critical for providing a positive user experience and staying ahead of the competition.

Conclusion

Web performance optimization is more important than ever in today’s digital landscape. A slow website can result in unsatisfied visitors, decreased engagement, and revenue loss. Google Web Vitals is a useful tool for website owners and developers who want to measure and improve web performance. Website owners and developers can identify areas for improvement and make changes to improve website performance by focusing on loading, interactivity, and visual stability. Website owners and developers can use these tips and tools to stay ahead of the competition and provide a positive user experience for their visitors.

--

--

Balázs Barta
0 Followers

Product designer passionate about holistic, accessible, and inclusive design.