Format and beautify minified or messy HTML code with proper indentation. Supports customizable indent size. Runs entirely in your browser — your code is never sent to any server.
Minified HTML is great for production but impossible to read or edit. This beautifier transforms compressed, single-line HTML into properly indented, readable code. It handles nested elements, self-closing tags, inline elements, and preserves content within script and style blocks. The formatted output follows standard conventions: each block element on its own line, consistent indentation showing nesting depth, and proper spacing around attributes. Essential for debugging minified production code, cleaning up HTML from WYSIWYG editors (which often produce messy output), and maintaining readable source files. The formatter runs entirely in your browser — your code stays private.
No — the output is functionally identical. Only whitespace (indentation, newlines) changes. The DOM structure, attributes, and content remain exactly the same.
2 spaces is more common in web development (used by Google, Airbnb style guides). 4 spaces provides more visual separation. Tabs let each developer set their preferred width. Pick one and be consistent.
This is a formatter, not a validator. It indents what you give it but won't fix missing closing tags, improper nesting, or invalid attributes. Use an HTML validator for error checking.
The beautifier preserves script block content as-is. For JavaScript formatting, use our Code Beautifier or a dedicated JS formatter. Mixing concerns keeps each tool focused and reliable.
WYSIWYG editors (TinyMCE, CKEditor, WordPress) generate machine-optimized HTML with minimal whitespace and often redundant markup. Paste it here to make it human-readable for editing.