Free Online HTML Beautifier & Formatter
Instantly format, beautify and minify HTML code — entirely in your browser. No server upload. No sign-up.
drag_indicator Drag & drop an HTML file here
What is an HTML Beautifier?
An HTML beautifier (also called an HTML formatter or HTML prettifier) is a tool that transforms compressed, minified, or poorly formatted HTML code into a clean, consistently indented, human-readable format. Browsers can read minified or messy HTML just as well as formatted code — but humans cannot. That's where HTMLify comes in.
When you copy HTML from a CMS, paste it from a template engine, or receive it from an automated system, it often arrives as a single long line with no indentation. The HTMLify HTML Beautifier instantly reforms this into a well-structured document with proper nesting and consistent indentation, making it effortless to read, debug, and modify.
All formatting happens directly in your browser. Your HTML code is never uploaded to our servers, ensuring complete privacy.
Why Beautify HTML?
Readability
Indented HTML is far easier to scan and understand, reducing the time you spend navigating complex structures.
Debugging
Proper indentation makes missing closing tags, incorrect nesting and structural issues immediately visible.
Collaboration
Consistent code formatting reduces confusion when multiple developers work on the same codebase.
Maintenance
Well-formatted HTML is easier to update over time, lowering the cost of long-term project maintenance.
How to Use HTMLify
- Paste or Upload: Paste your HTML into the Input editor above, or click Upload to load an .html / .htm / .txt file. You can also drag and drop a file onto the editor.
- Configure Options: Click the Options button to choose your indentation style (2 spaces, 4 spaces, or Tab), and toggle comment/whitespace preferences.
- Click Beautify HTML: Click the blue Beautify HTML button. Formatted code appears instantly in the Output panel.
- Copy or Download: Use the copy button to copy the result to clipboard, or the download button to save it as
formatted.html.
HTMLify Features
HTML Beautifier
Format messy HTML into clean, consistently indented code. Supports all HTML5 elements, void tags, attributes, comments, scripts and styles.
Try it →HTML Minifier
Reduce HTML file size by removing whitespace, comments and redundant characters. See original size, minified size and compression percentage.
Try it →HTML Validator
Check HTML for common structural errors: unclosed tags, mismatched elements, missing attributes, deprecated tags, and more.
Try it →HTML Compare
Paste two HTML documents and immediately see what has changed. Added lines highlighted green, removed lines red.
Try it →File Upload & Drag Drop
Upload .html, .htm or .txt files directly. Or drag and drop a file onto the editor. File contents load instantly into the editor.
Dark Mode
Switch between light and dark themes. HTMLify remembers your preference across visits using localStorage.
HTML Beautifier Example
<html><head><title>Example</title>
</head><body><div class="container">
<h1>Hello World</h1><p>This is a
<strong>test</strong> paragraph.</p>
<ul><li>Item 1</li><li>Item 2</li>
</ul></div></body></html><html>
<head>
<title>Example</title>
</head>
<body>
<div class="container">
<h1>Hello World</h1>
<p>This is a <strong>test</strong> paragraph.</p>
<ul>
<li>Item 1</li>
<li>Item 2</li>
</ul>
</div>
</body>
</html>Related HTML Tools
Frequently Asked Questions
-
help_outline What is an HTML Beautifier?
An HTML Beautifier is a tool that formats messy or minified HTML code by adding proper indentation, line breaks, and spacing, making it readable for humans.
-
help_outline How does the HTML Formatter work?
It parses your raw HTML string and applies consistent formatting rules (like 2 or 4 spaces per indent level) to nest tags correctly visually.
-
help_outline Is this tool safe to use?
Absolutely. The formatting is done securely, and your code is not stored on our servers permanently.
-
help_outline Does it fix broken HTML?
While it can format the code, it does not typically fix fundamental syntax errors like missing closing tags, though some engines attempt auto-correction.
-
help_outline Can I format PHP or JS with this?
This tool is specifically optimized for HTML. While inline JS/CSS might get some formatting, dedicated formatters are better for those languages.
-
help_outline Why should I beautify my code?
Beautified code is easier to read, debug, maintain, and collaborate on with other developers.
-
help_outline Does it change my website appearance?
No, formatting only changes whitespaces in the source code. Browsers ignore extra whitespaces, so your site will look identical.
-
help_outline Is there a limit on code size?
Our browser-based engine can handle very large files, typically up to several megabytes without issue.
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