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HTML Minifier

Minify HTML to remove whitespace and comments, or beautify minified HTML back to readable code — with granular options and live size comparison.

🔒 Private — data never leaves your browser ⚡ Instant results 🚫 No login required ∞ No limits
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💡 HTML minification typically saves 15–35% on file size. Every millisecond off your TTFB (Time To First Byte) improves both UX and Core Web Vitals.
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Input HTML
Output HTML

📖How to Use the HTML Minifier

  1. 1
    Set up your input

    Fill in the fields or paste your input text. Click Sample to load an example and see the tool in action.

  2. 2
    Click the action button

    Press the main button to process your input. Results appear instantly — all processing runs in your browser, no upload needed.

  3. 3
    Review the output

    Check the output panel. Any errors are shown in a red bar with a clear description so you can fix the input quickly.

  4. 4
    Copy or download

    Click Copy to copy to clipboard, or Download to save the result as a file.

Frequently Asked Questions

What does HTML minification remove?

It removes unnecessary whitespace between tags, HTML comments (<!-- -->), leading and trailing spaces on each line, and optional redundant attributes, without affecting how the page renders.

Is it safe to remove HTML comments?

In production, yes — HTML comments are invisible to users and serve no runtime purpose. The exception is IE conditional comments (<!--[if IE]>), which this tool preserves by default.

Does minifying HTML affect JavaScript or CSS?

No. Inline <script> and <style> blocks are minified separately using their own rules. Content inside those blocks is handled carefully to avoid breaking scripts.

What is the beautify mode?

Beautify reverses minification — it adds proper indentation and line breaks to make compact or minified HTML readable for editing and debugging.

Will minification break my page?

No, for standard HTML. This tool uses conservative minification settings that are safe for all common HTML patterns. Unusual whitespace-sensitive elements like <pre> and <textarea> are preserved.

Is my HTML code private?

Yes. All processing happens locally in your browser. Your HTML is never uploaded to any server.