HTML minification reduces file sizes, improves loading times and optimizes web performance. It can reduce file size by 20 to 50% on average.

How does HTML minification work?

Minification removes spaces, comments and unnecessary characters from HTML code while preserving its structure and functionality. The code remains valid but is more compact.

Can I unminify HTML code?

Yes, our tool can unminify minified HTML code to make it more readable and easier to maintain.

Is the code processed securely?

Absolutely. All processing happens in your browser. No data is sent to our servers, ensuring complete privacy.

Minify & Unminify HTML Online — Free HTML Formatter

Minify and unminify HTML documents instantly with our free online tool. Compress HTML for faster page loads or restore readable formatting for debugging. Handles inline CSS and JavaScript safely. All processing in your browser.

Remove comments

Collapse whitespace

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HTML Minification

Compressing HTML files by removing whitespace, comments and unnecessary characters

Features

Our HTML minification tool offers a complete set of features for optimizing HTML documents.

Minify HTML

Remove whitespace, comments, and optional tags from HTML documents to reduce file size and improve page load times.

Unminify HTML

Restore readable formatting to minified HTML with proper indentation and line breaks. Essential for debugging and reviewing production HTML.

Basic example

Input HTML

<!DOCTYPE html>
<html>
  <head>
    <title>My Page</title>
  </head>
  <body>
    <h1>Hello World</h1>
    <p>This is a paragraph.</p>
  </body>
</html>

Minified HTML

<!DOCTYPE html><html><head><title>My Page</title></head><body><h1>Hello World</h1><p>This is a paragraph.</p></body></html>

Minification options

Remove Comments

Removes all HTML comments from code

Comparison with/without option:

Original code

<div>
  <!-- This is a comment -->
  <p>Content</p>
  <!-- Another comment -->
</div>

With removeComments: true

<div><p>Content</p></div>

With removeComments: false

<div><!-- This is a comment --><p>Content</p><!-- Another comment --></div>

Collapse Whitespace

Collapses multiple whitespace characters into single spaces

Comparison with/without option:

Original code

<div>
    <p>   Multiple   spaces   </p>
    <span>  Text  </span>
</div>

With collapseWhitespace: true

<div><p> Multiple spaces </p><span> Text </span></div>

With collapseWhitespace: false

<div><p>   Multiple   spaces   </p><span>  Text  </span></div>

How to Unminify HTML Online

HTML unminification restores readable formatting to compressed HTML documents. Paste any minified HTML into our tool and click Unminify to add proper indentation, organize nested elements, and format attributes. This is essential for debugging production websites, inspecting minified templates, or reviewing HTML generated by CMS platforms.

HTML Minification — What Gets Removed

HTML minification removes unnecessary whitespace between tags, HTML comments, optional closing tags, redundant attributes, and empty attribute values. It preserves all content, inline styles, scripts, and structural elements. Your page will render identically in all browsers after minification.

Frequently Asked Questions

Everything you need to know about HTML minification, unminification and formatting

Why minify HTML?

HTML minification reduces file size by removing whitespace, comments and optional tags. Smaller HTML loads faster, uses less bandwidth and can improve Core Web Vitals and SEO. Many sites see 10–30% size reduction with no change in how the page renders.

How do I unminify HTML online?

Paste any minified HTML into our tool and click Unminify. The tool restores indentation and line breaks so you can read and edit the code. Essential for debugging production HTML, inspecting minified templates or reviewing HTML from CMS platforms.

Is my HTML processed securely?

All HTML processing runs entirely in your browser. No data is sent to our servers. Your markup, inline styles and scripts stay on your device and remain private.

What gets removed when minifying HTML?

Minification removes unnecessary whitespace between tags, HTML comments, optional closing tags (e.g. </p>, </li>), redundant attributes and empty attribute values. Content, inline CSS, JavaScript and structural elements are preserved so the page renders identically.

Does HTML minification affect layout?

No. Minification only removes characters that do not affect rendering. Your layout, styles and behavior stay the same in all browsers. We preserve whitespace inside <pre> and <textarea> where it matters.

Does it handle inline CSS and JavaScript?

Yes. The minifier preserves content inside <style> and <script> tags. Only the surrounding HTML (whitespace, comments, optional tags) is optimized. Inline event handlers and attributes are kept intact so your page works exactly as before.

How much file size reduction can I expect?

Typical savings are 10–30% depending on comments, whitespace and optional tags. HTML with many comments and indentation will see larger reductions. The tool shows the exact output size after processing.

What is HTML beautification or formatting?

Beautification (unminify) adds consistent indentation and line breaks to minified HTML so you can read and edit it. It does not change behavior — only layout. Use it to inspect production HTML or templates before making changes.

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