Performance & Optimization in HTML

Lazy Loading Images & Iframes Lazy loading improves page speed by loading images and iframes only when needed. Lazy Loading Images Lazy Loading Iframes Preloading Assets Preloading critical resources enhances performance. HTML Minification Minifying HTML reduces file size and improves load times. Example of Minified HTML Reducing Render-Blocking Resources Defer or asynchronously load scripts to […]

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  • Post category: HTML
  • Reading time: 22 mins read
  • Post last modified: April 3, 2025

Lazy Loading Images & Iframes

Lazy loading improves page speed by loading images and iframes only when needed.

Lazy Loading Images

<img src="image.jpg" loading="lazy" alt="Lazy Loaded Image">
HTML

Lazy Loading Iframes

<iframe src="video.html" loading="lazy"></iframe>
HTML

Preloading Assets

Preloading critical resources enhances performance.

<link rel="preload" href="styles.css" as="style">
HTML

HTML Minification

Minifying HTML reduces file size and improves load times.

Example of Minified HTML

<!DOCTYPE html><html><head><title>Page</title></head><body><h1>Hello</h1></body></html>
HTML

Reducing Render-Blocking Resources

Defer or asynchronously load scripts to improve performance.

<script src="script.js" defer></script>
HTML

Optimizing Fonts

Use efficient font loading strategies.

<link rel="preconnect" href="https://fonts.googleapis.com">
HTML

Optimizing HTML enhances speed and user experience. Next, we’ll explore integration with CSS and JavaScript.

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