About HTML Formatter

Format and beautify your HTML code for better readability. This free online tool helps you indent and format messy HTML code properly.

Indent and organize HTML markup so element nesting, attributes, text nodes, comments, and embedded blocks are easier to inspect.

Key features

  • Formatting purpose Indent and organize HTML markup so element nesting, attributes, text nodes, comments, and embedded blocks are easier to inspect.
  • Supported source Paste a complete HTML document or fragment containing tags, attributes, inline text, templates, styles, or scripts.
  • Style controls Configure indentation, wrapping, and newline preferences made available by the formatter.
  • Formatted result The output exposes the DOM-like hierarchy without intentionally changing element names or attribute values.

How to use HTML Formatter

Follow this workflow to work with HTML markup safely and accurately.

  1. Paste or enter the source Paste a complete HTML document or fragment containing tags, attributes, inline text, templates, styles, or scripts.
  2. Choose formatting rules Configure indentation, wrapping, and newline preferences made available by the formatter.
  3. Format the source Run the formatter after the source parses successfully. It will apply presentation rules without intentionally changing the parsed structure.
  4. Review and copy The output exposes the DOM-like hierarchy without intentionally changing element names or attribute values.

Usage tips

  • Validate semantics and accessibility separately; pretty markup is not necessarily correct markup.
  • Review whitespace-sensitive inline content, pre, textarea, and template expressions after formatting.
  • Do not use formatting as HTML sanitization when content comes from an untrusted user.

Frequently asked questions

Indent and organize HTML markup so element nesting, attributes, text nodes, comments, and embedded blocks are easier to inspect.
Paste a complete HTML document or fragment containing tags, attributes, inline text, templates, styles, or scripts.
Configure indentation, wrapping, and newline preferences made available by the formatter.
Malformed markup may be rejected or normalized according to parser rules, and embedded framework templates may require a dedicated parser.