Implement Cache Busting for Static Resources to Ensure Updates

Performance Analyzer

What is this warning?

A static resource on your page doesn't have cache busting implemented. Without cache busting (like version numbers or hashes in filenames), browsers may serve outdated cached versions of your files even after you've updated them, preventing users from seeing your latest changes.

How to Fix This Issue

How to Fix It

The Problem

<link rel="stylesheet" href="styles.css">
<script src="app.js"></script>

The Solution

Add version numbers or content hashes to your static resource URLs.

<link rel="stylesheet" href="styles.css?v=1.2.3">
<script src="app.js?v=1.2.3"></script>

<!-- Or use content hashes -->
<link rel="stylesheet" href="styles.a1b2c3d4.css">
<script src="app.e5f6g7h8.js"></script>

Why This Works

Cache busting ensures that when you update your files, browsers will download the new versions instead of serving stale cached content, while still allowing long-term caching for unchanged files.

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.