What formatter does this tool use?

Our HTML beautifier uses Prettier, the industry-standard code formatter used by millions of developers. Prettier ensures consistent, opinionated formatting that follows best practices. It runs entirely in your browser for privacy and speed.

What indentation settings are used?

The beautifier uses 2-space indentation with an 80-character line width. These are the default Prettier settings used by most web development projects. Spaces are used instead of tabs for consistency across editors.

Can I beautify minified HTML?

Yes! Our HTML beautifier can unminify compressed HTML by adding proper whitespace, indentation, and line breaks. This is useful for debugging production HTML or understanding how pages are structured.

Is this HTML beautifier free?

Yes, our HTML beautifier is completely free with no signup required. All formatting happens locally in your browser using JavaScript. No HTML code is sent to our servers, ensuring your code remains private.

Why does the beautifier show an error?

Prettier requires valid HTML to format correctly. If you see an error, check for unclosed tags, mismatched quotes, or invalid syntax. The error message from Prettier usually indicates where the problem is in your code.

HTML Beautifier | Free Online HTML Formatter & Prettifier

Q: What is HTML beautification?

HTML beautification (also called formatting or prettifying) is the process of reformatting HTML code to make it more readable. This includes adding proper indentation, line breaks between elements, and consistent spacing. It's the opposite of minification, which removes whitespace to reduce file size.

What is HTML Beautification?

HTML beautification is the process of reformatting HTML code to improve readability and maintainability. It adds proper indentation, line breaks between elements, and consistent spacing throughout your markup. This is the opposite of minification, which removes all unnecessary whitespace to reduce file size. Our beautifier uses Prettier, the industry-standard formatter trusted by millions of developers.

Why Use Our HTML Beautifier?

Powered by Prettier: Industry-standard formatting used by professional developers
Syntax Highlighting: Color-coded output makes structure easy to understand
Consistent Formatting: 2-space indentation, 80-character line width
Unminify HTML: Expand compressed production HTML for debugging
100% Private: All processing happens in your browser - no data sent to servers

When to Beautify HTML

Debugging Minified HTML: When you need to understand minified HTML from production or view-source, beautifying makes the code readable.

Code Reviews: Well-formatted HTML is easier to review and spot issues during pull requests.

Learning HTML Structure: Beautified HTML clearly shows the nesting and hierarchy of elements.

Standardizing Code: Ensure consistent formatting across your team by running HTML through a beautifier.

Email Templates: Format messy email HTML to understand and modify complex inline styles.

Formatting Settings

Indentation: 2 spaces per level (Prettier default)
Line Width: 80 characters maximum before wrapping
Tabs vs Spaces: Spaces for consistent display across editors
Parser: Prettier HTML parser for accurate formatting

HTML Formatting Best Practices

Consistent Indentation: Use the same indentation throughout your project.
One Attribute Per Line: For elements with many attributes, consider one per line.
Lowercase Tags: Always use lowercase for HTML tags and attributes.
Proper Nesting: Close tags in the correct order to maintain valid structure.
Meaningful Whitespace: Use blank lines to separate logical sections of your HTML.

Frequently Asked Questions

What's the difference between beautifying and minifying HTML?

Beautifying adds whitespace for readability, while minifying removes it for smaller file sizes. Use beautified HTML during development and minified HTML in production.

Will beautifying change how my HTML renders?

In most cases, no. However, whitespace changes can affect inline elements and text nodes in specific situations. Always test your beautified HTML to ensure it renders correctly.

Can I beautify HTML with embedded JavaScript or CSS?

Yes, Prettier handles inline scripts and styles. It formats the HTML structure and respects the content within script and style tags.

Why is Prettier showing a parsing error?

Prettier requires valid HTML syntax. Check for unclosed tags, mismatched quotes, or invalid attribute syntax. The error message usually points to the problematic area.