How to improve total blocking time WordPress

When running a successful website, one of the critical factors that can significantly impact user experience and search engine rankings is the Total Blocking Time (TBT). This article will delve into Total Blocking Time and explore practical strategies to improve it in WordPress.

Understanding Total Blocking Time

Total Blocking Time refers to when a webpage is unresponsive to user input. It is a vital metric that Google considers when evaluating the user experience of a website. A lower TBT indicates a more responsive and user-friendly website.

Measuring Total Blocking Time

To improve TBT, you must first understand how to measure it accurately. Various tools and platforms, such as Google Page Speed Insights, can help you analyze your website’s TBT. Google’s Core Web Vitals also include TBT as a crucial metric for ranking websites.

Factors Affecting Total Blocking Time

Before jumping into optimization strategies, it’s essential to grasp the factors contributing to high TBT. Some common culprits include slow server response times, large JavaScript files, render-blocking resources, and excessive third-party scripts.

Optimizing Total Blocking Time in WordPress

Now that we have a foundation let’s explore how to optimize Total Blocking Time specifically for WordPress websites.

Choosing the Right Hosting Provider

Your choice of hosting provider plays a significant role in TBT. Choose a hosting provider that provides speedy service. Server response times and prioritizes website performance.

Efficient Theme and Plugins

Numerous themes and plugins are available on WordPress, but only some are optimized for speed. Choose lightweight pieces and only install essential plugins. Regularly update your themes and plugins to benefit from performance improvements.

Image and Media Optimization

Images and media files can be substantial contributors to TBT. Compress images, use responsive image formats, and implement lazy loading to ensure that media elements load only when they become visible to the user.

Minimize Requests from External Sources

It is recommended to minimize the amount of external requests your website makes. Limit third-party scripts and consider deferring non-essential JavaScript to improve page responsiveness.

Prioritize Critical CSS

Critical CSS refers to the minimal CSS required to render the visible portion of your webpage. Implementing essential CSS can help reduce rendering times and improve TBT.

Lazy Loading and Asynchronous Loading

It is recommended to incorporate lazy loading for both images and videos. This feature allows for faster loading times by only loading media as it comes into view on the screen. They load progressively as the user scrolls. Additionally, use asynchronous loading for JavaScript files to prevent them from blocking other page elements.

Testing and Monitoring

Optimizing TBT is an ongoing process. Regularly testing and monitoring your website’s performance is crucial to maintaining a low TBT.

Regular Performance Testing

Use tools like GTmetrix, Pingdom, or Lighthouse to run performance tests on your website. Identify bottlenecks and address them promptly.

Utilizing Google Page Speed Insights

Google Page Speed Insights offers valuable information regarding the performance of your website, including TBT. Follow the recommendations to enhance your site’s speed.

Real-User Monitoring

Consider implementing real-user monitoring tools to gain insights into how users experience your website. This data can help you pinpoint TBT issues in real time.


In today’s digital landscape, a fast and responsive website is non-negotiable. Total Blocking Time directly impacts user satisfaction and SEO rankings. By following the strategies discussed in this article, you can effectively implement them. Significantly improve your WordPress website’s Total Blocking Time, ensuring a smoother user experience and higher search engine visibility.


1. What is Total Blocking Time (TBT)?

Total Blocking Time (TBT) measures a web page’s duration as unresponsive to user interactions. It’s a critical metric for assessing website performance and user experience.

2. Why is TBT important for SEO?

TBT is important for SEO because Google considers it when ranking websites. A lower TBT indicates a more user-friendly website; This can result in improved rankings on search engines.

3. How can I measure TBT on my WordPress site?

You can measure TBT on your WordPress site using tools like Google Page Speed Insights, Lighthouse, or various website performance testing services.

4. What are render-blocking resources, and how do they affect TBT?

Render-blocking resources are CSS or JavaScript files that block the rendering of a webpage. They can significantly increase TBT by delaying page loading. Minimizing these resources is essential for TBT optimization.

5. Is optimizing TBT a one-time task?

No, optimizing TBT is an ongoing process. It is essential to conduct routine monitoring and maintenance to ensure optimal performance. Your WordPress site maintains a low TBT over time.

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