P0Issue #1
Eliminate render blocking resources
❓ What does it mean?
What does it mean?
Render-blocking resources are files (like CSS and JavaScript) that the browser must download and process before it can display any content to the user.
If these resources are not optimized, they delay the First Contentful Paint (FCP) and make your page look like it’s loading slowly — hurting both SEO rankings and user experience
🚨 Why is it important for SEO?
Why is it important for SEO?
Google considers page speed as a ranking factor.
A slow-loading page increases bounce rate and lowers Core Web Vitals scores (especially FCP & LCP).
Eliminating or deferring render-blocking resources improves crawl efficiency and mobile performance.
✅ How to Fix It
Common Render-Blocking Resources
External CSS files (style.css)
Synchronous JavaScript (<script src="script.js"></script>)
Fonts loaded without font-display: swap
✅ How to Fix It
Minify and combine CSS/JS → Reduce size and requests.
Use async or defer on JavaScript → Prevent blocking rendering.
Inline critical CSS → Load only above-the-fold styles quickly.
Lazy load non-critical scripts → Example: chat widgets, analytics.
Use font-display: swap for web fonts.
❌ Bad Example
📌 Example
❌ Bad (Render-blocking):
<head>
<link rel="stylesheet" href="/css/style.css">
<script src="/js/main.js"></script>
</head>
Here, the browser waits for CSS and JS before rendering content.
✅ Good Example
✅ Good (Optimized):
<head>
<!-- Critical CSS inline -->
<style>
body { font-family: Arial; margin: 0; }
.hero { background: #f5f5f5; padding: 20px; }
</style>
<!-- Load non-critical CSS asynchronously -->
<link rel="preload" href="/css/style.css" as="style" onload="this.onload=null;this.rel='stylesheet'">
<!-- Defer JavaScript -->
<script src="/js/main.js" defer></script>
</head>
👉 Now the page content renders immediately, while extra styles and scripts load in the background.
⚡ Result
⚡ Result: Faster First Contentful Paint (FCP), improved Core Web Vitals, and better SEO performance.