HTML Formatter & Beautifier — Clean HTML Online

Re-indent and organise messy or minified HTML markup into a clean, readable structure. Handles nested elements, inline styles, and self-closing tags intelligently.

Key Features

Adjustable indentation with choice of 2 spaces, 4 spaces, or tab indentation
Proper alignment for void and self-closing elements (such as img, br, input)
Intelligent preservation of preformatted tags and inline text flows
Cleans up mixed line breaks and uneven tag attributes

How to Use

Paste your unformatted or minified HTML into the source editor.
Select your desired indentation preference (spaces or tabs).
Click "Format HTML" to beautify the document.
Review the formatted markup in the output window.
Copy the clean HTML code or download the file.

Example

Sample input

<div><p>Hello</p><ul><li>One</li><li>Two</li></ul></div>

Sample output

<div>
  <p>Hello</p>
  <ul>
    <li>One</li>
    <li>Two</li>
  </ul>
</div>

Edge Cases

Void elements like <br> and <img>
Inline scripts and styles preserved
Malformed or unclosed tags

Frequently Asked Questions

Will formatting break inline styles or script tags?

No. Embedded CSS within style tags and JavaScript within script tags are preserved and indented cleanly according to standard block rules.

Does the formatter modify whitespace inside pre or code tags?

No. Preformatted containers like <pre> and <code> respect literal whitespace so your code blocks and preformatted text are not altered.

Can this tool format HTML fragments as well as full documents?

Yes. It works equally well with full HTML5 documents containing doctype tags or individual component snippets like cards and navbars.

Related Tools

HTML Minifier — Reduce HTML File Size Online HTML Validator — Check HTML for Errors Online HTML to Markdown Converter — Online Free Tool Extract Text from HTML — Strip HTML Tags Online HTML Entity Encoder — Encode Special Characters Online

Privacy notice: when you run this tool, your input is sent over HTTPS to our server, processed in memory and returned. It is not stored or logged. Avoid pasting live secrets such as private keys or passwords.