How To Improve Time To Interactive Of Your WordPress Site

Wondering how Time to Interactive influences WordPress site speed? We all want a speedy, easy-to-use website. Clicking on a page and receiving no response is the worst, right? 

We’ll describe Time to Interactive, why it’s significant, which tools assess it, and what affects its score. We’ll also offer technical solutions to improve Time to Interactive grades (TTI longer than 3,8 seconds). Finally, we will show you how to boost your performance score and fix your website. 

1. Improve WordPress TTI 

Optimizing JS files lowers Time to Interactive (including third-party code.) JS execution improvements should boost TTI. Focus on resource loading and request size. 

We offer eight performance optimizations to address Time to Interactive and speed up WordPress. 

2. JS 

Deferring JS files loads them after the browser displays the most important content. Prioritizing content helps your page load faster. Parsing, building, and running JS files will take less time, boosting TTI. 

Delay and Reduce Unused JS 

Delaying JS execution and eliminating unnecessary JS improves performance and TTI. The fundamental idea is to wait loading all JS files until a user interacts, such as clicking a button or scrolling to the bottom. See where JavaScript is loaded in your GTmetrix Waterfall graphic. PSI diagnoses the same. The audit will reveal if the “bad” JS is from your code or a third-party app. 

See also  Ways To Improve Performance For Your WordPress Website

3. Minify JS/CSS 

Minifying code removes clutter and unnecessary punctuation like new lines and spaces. These items may slow your site but assist you or your developer read the code. 

The main thread can focus on several vital activities by removing this “useless” code from your script. Again, it’s about making room and time to render the most important stuff first. 

4. Reduce CSS Waste and Optimize Delivery 

The browser must examine all page style and layout information before rendering content. In other words, the browser must provide the CSS, but this operation could block the main thread from handling other vital jobs and procedures. 

5. DNS Prefetch 

Prefetch DNS for third-party code like Vimeo videos or Google Fonts. It reduces loading time and resources from other websites, making your website speedier. The aim is to utilize Preconnect to connect to third-party scripts before they request it.

6. Preload Fonts 

Font preloading “forces” visitors’ browsers to load key fonts early. 

Displaying your own typeface on your website is key to branding. Web font preloading recommended practices can reduce performance difficulties. 

7. Mobile Interaction Time 

Improve mobile Time to Interactive? Start with JavaScript issues. Apply all performance suggestions above. Remember: the more scripts, the longer the TTI, which can vary by device. 


This technical tutorial should help you optimize your WordPress TTI score. 

TTI makes up 10% of the Lighthouse performance grade and is user-centric. Optimizing this measure can increase visitors’ website interaction speed.

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