Delay Loading of JavaScript – How It Works

Delayed JavaScript loading is a performance optimization technique that postpones the execution of JavaScript until a user interacts with the page, such as by scrolling or clicking. This approach enhances initial page load speed and improves user experience, particularly on slower connections and often increase your scores on Google Page Insights.

initial page load speed and improves user experience, particularly on slower connections.​

When a webpage employs delayed JavaScript loading, the browser prioritizes loading the core content first. The execution of JavaScript is deferred until the user interacts with the page. This strategy ensures that essential content is accessible promptly, while non-critical scripts load subsequently.​

Options for Managing Delayed JavaScript Loading:

1. Maintain the Delay

   • Benefits:

     • Improved website performance scores.

     • Faster initial page load times.

     • Enhanced user experience for most users.

   • Drawback:

     • Requires user interaction to trigger full-page rendering.

2. Disable the Delay

   • Benefits:

     • Immediate loading of all page elements.

     • No need for user interaction.

   • Drawback:

     • Potential degradation of website performance scores.

     • Slower initial page load times, especially on slower connections.

While disabling the delay might seem like a quick fix, it's important to consider the potential impact on performance. In most cases, maintaining the delay is recommended to leverage the performance benefits. However, if immediate loading of all elements is a priority for your website, please contact our support team to adjust this setting