Improve Total Blocking Time

Total Blocking Time (TBT) is a new Lighthouse Performance metric that quantifies your page’s load responsiveness to user input.

It measures the total amount of time your webpage was blocked, preventing the user from interacting with your page.

It is one of the Web Vitals and should not be overlooked.

How to improve Total Blocking Time?

Total Blocking Time is highly correlated with JavaScript, and any improvements to JavaScript execution and performance are likely to reduce your TBT.

Some of these optimizations include:

• 1) Reducing JavaScript execution time
• 2) Minimizing main-thread work
• 3) Replacing large JavaScript libraries with smaller alternatives
• 4) Removing unused JavaScript
• 5) Reducing the impact of third-party code

How to improve Total Blocking Time with Staq

Under Staq Hosting > JavaScript > Site Optimizer you will see numerous opportunities to improve Speed Index such as Minify Javascript files, Minify JavaScript files, Combine all JavaScript etc.