HTML Formatter & Beautifier
Instantly format and indent messy HTML code. Paste minified HTML and get clean, readable markup—no install, no server, 100% private.
What is an HTML Formatter?
An HTML formatter (also called HTML beautifier) takes minified or poorly indented HTML and restructures it with proper indentation and line breaks, making the code readable and easy to maintain. This tool runs entirely in your browser—no data is sent to any server.
When to Use an HTML Formatter
- Debugging minified HTML from a production website
- Reading HTML source code copied from a CMS or email template
- Preparing HTML snippets for documentation or code reviews
- Learning HTML structure by visualizing nesting levels
How the Formatter Works
The formatter parses HTML tags line by line and adjusts indentation based on opening and closing tags. Void elements (br, img, input, etc.) do not increase the indent level. Two spaces are used per indent level for maximum readability.
Frequently Asked Questions
Does this validate my HTML?
No—this tool only reformats indentation. It does not check for missing closing tags or invalid attributes. Use the W3C Markup Validator for full validation.
Can I format HTML with embedded CSS or JavaScript?
The formatter handles the HTML structure. Embedded <style> and <script> blocks are preserved as-is without internal formatting.