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HTML formatter & minifier

Beautify messy HTML with proper indentation or minify it for production. Strips comments when minifying. 100% client-side.

Indent
format
html
<div class="container"><h1>Hello World</h1><p>This is a paragraph with <strong>bold</strong> and <em>italic</em> text.</p><ul><li>Item 1</li><li>Item 2</li></ul></div>

What is HTML Formatter & Minifier?

An HTML formatter is a web development tool that restructures messy or minified HTML markup into clean, properly indented code that is easy to read, edit, and debug. When you view source on most production websites, the HTML is compressed into a single line or inconsistently indented, making it nearly impossible to understand the document structure. This tool parses your HTML and rebuilds it with consistent indentation based on nesting depth, correctly handling void elements like img, br, input, and meta that do not have closing tags. In minify mode, the tool does the opposite — it strips all HTML comments, collapses whitespace, and removes unnecessary characters to produce the smallest possible output for production deployment. Smaller HTML files mean faster page loads and better Core Web Vitals scores. The formatter works entirely in your browser with no server upload required. It handles real-world HTML including complex attribute lists, inline styles, script tags, and deeply nested component structures. Whether you are debugging a template, cleaning up generated markup, or optimizing HTML for deployment, this tool handles both directions instantly.

How to Use HTML Formatter & Minifier

  1. 1

    Choose format or minify mode

    Select Format to beautify your HTML with proper indentation, or Minify to compress it for production. In format mode, pick 2-space or 4-space indentation to match your project style.

  2. 2

    Paste your HTML

    Paste raw HTML from your source code, browser DevTools, or template engine output into the input area. The tool processes it instantly and shows the result below.

  3. 3

    Copy the result

    Click Copy to place the formatted or minified HTML on your clipboard. Use the formatted version for development and the minified version for production deployment.

Features

  • Beautify with consistent 2-space or 4-space indentation
  • Minify by stripping comments and collapsing all whitespace
  • Correctly handles void elements (img, br, input, meta, etc.)
  • Preserves attribute order and inline content
  • Instant processing with no file upload or server roundtrip
  • One-click copy to clipboard for fast workflow integration

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Frequently Asked Questions

Does the formatter fix broken HTML?+
No. This tool formats and indents existing HTML based on tag nesting but does not repair missing closing tags or fix structural errors. For HTML validation, use an HTML validator tool alongside this formatter.
Are HTML comments preserved in format mode?+
Yes. In format mode, comments are preserved and indented along with the surrounding markup. In minify mode, all HTML comments are stripped to reduce file size.
How does it handle void elements like img and br?+
The formatter recognizes all 14 HTML void elements (area, base, br, col, embed, hr, img, input, link, meta, param, source, track, wbr) and does not increase indentation depth after them since they have no closing tag.
Can I format inline JavaScript or CSS within HTML?+
The tool formats the HTML structure but does not reformat embedded JavaScript or CSS blocks. For those, use dedicated CSS or JavaScript formatters on the extracted code.
How much can minification reduce HTML file size?+
Typical savings range from 10-30% depending on the original formatting. Pages with many comments and generous indentation see the largest reductions. Every kilobyte saved improves page load time.
Is my HTML code sent to any server?+
No. All formatting and minification runs entirely in your browser using JavaScript. Your HTML never leaves your machine, making it safe for proprietary templates and sensitive content.