PHP HTML Minifier

Unlock lightning-fast load times with a simple PHP trick. This lightweight tool uses PHP's ob_start() to automatically minify your HTML output on the fly. It strips out unnecessary whitespace, multiple spaces, and HTML comments—giving you a cleaner, faster website instantly.

Ideal for developers who care about performance, SEO optimization, and serving lean markup to their users without relying on external build tools.

✨ Features

• Real-time HTML minification using output buffering
• Removes:
  • Whitespaces after and before HTML tags
  • Extra/multiple spaces
  • HTML comments
• Plug-and-play with zero dependencies
• Great for performance-focused PHP projects

🎥 Demo Video

Watch the full walkthrough on YouTube:
👉 How to Minify HTML with PHP Output Buffering - https://www.youtube.com/watch?v=hRgQSmu4bjA

Learn how this technique can make your pages load faster and cleaner in just a few lines of code.

🚀 How It Works

This script hooks into the PHP output buffer using ob_start(), then passes the entire HTML output through a minifier() function before it gets sent to the browser.

Example:

<?php
ob_start("minifier");

function minifier($code) {
    $search = array(
        '/\>[^\S ]+/s',     // remove whitespaces after tags
        '/[^\S ]+\</s',     // remove whitespaces before tags
        '/(\s)+/s',         // collapse multiple spaces
        '/<!--(.|\s)*?-->/' // remove HTML comments
    );
    $replace = array('>', '<', '\\1');
    return preg_replace($search, $replace, $code);
}
?>
<!-- Your HTML goes here -->
<?php ob_end_flush(); ?>