Improve Performance by Externalizing Large Inline Scripts

JavaScript Analyzer

What is this warning?

Your page has a large amount of JavaScript code written directly in the HTML. This is called an 'inline script.' It increases the size of your HTML document, which can slow down the initial page load. It also prevents the browser from caching the script, meaning it has to be downloaded again on every page visit.

How to Fix This Issue

How to Fix It

The Problem

A `<script>` block in your HTML with hundreds of lines of JavaScript.

The Solution

Move the JavaScript code into its own file (e.g., `app.js`) and link to it from your HTML.

<!-- Replace the large script block with this -->
<script src="/js/app.js" defer></script>

Why This Works

Externalizing scripts allows the browser to cache them. This means that after the first visit, the script doesn't need to be re-downloaded, leading to faster load times on subsequent pages. It also makes your code much cleaner and easier to manage.

SEO Impact

This issue can affect your site's search engine rankings and user experience. Addressing it promptly helps ensure optimal performance and visibility in search results.

Automatic Detection

Black SEO Analyzer automatically checks for this warning during site analysis, along with hundreds of other technical SEO issues.

Ready to Unlock Your Site's Full SEO Potential?

Choose the license that fits your needs and start getting the deep, actionable insights you deserve.