Ask any question about Performance here... and get an instant response.
Post this Question & Answer:
How can I reduce render-blocking resources to improve page load speed?
Asked on Jan 26, 2026
Answer
Reducing render-blocking resources is crucial for improving page load speed, as it allows the browser to start rendering the page more quickly. This involves optimizing CSS and JavaScript delivery to minimize delays in rendering.
<!-- BEGIN COPY / PASTE -->
<link rel="preload" href="styles.css" as="style" onload="this.onload=null;this.rel='stylesheet'">
<noscript><link rel="stylesheet" href="styles.css"></noscript>
<script src="script.js" async></script>
<!-- END COPY / PASTE -->Additional Comment:
- Use "preload" for critical CSS to ensure it loads quickly without blocking rendering.
- Apply "async" or "defer" attributes to non-essential JavaScript to prevent it from blocking HTML parsing.
- Consider inlining small CSS directly in the HTML to reduce additional requests.
- Audit your resources with tools like Google Lighthouse to identify and address render-blocking elements.
Recommended Links:
