HTML Formatter

Pretty-print HTML with consistent indentation. Paste minified or messy markup and click Run to beautify it for review or debugging.

  • Runs entirely in your browser
  • No data stored or sent to a server
  • Free forever — no signup
  • Instant conversion

Input and Output

Use the interactive encoder and decoder on this page to process your text.

Learn more about JSON formatting

How to Format HTML

HTML Formatting

When to Format HTML

Beautify minified markup from production builds, email templates, or scraped pages. Readable indentation helps debug nesting issues, spot unclosed tags, and review document structure during code review or incident response.

Format vs Entity Encode

HTML Format beautifies tag structure with indentation. HTML Entity Encode escapes individual characters for safe text display — they solve different problems and are often used at different stages of a pipeline.

Developer Tips

  • Format before diffing HTML changes in pull requests
  • Pair with HTML Entity Encode when displaying snippets in documentation
  • Do not inject formatted untrusted HTML into pages without sanitization

Frequently asked questions

Does formatting validate HTML?

No. The formatter improves readability but does not guarantee standards-compliant or error-free markup.

Will formatting change how browsers render the page?

Whitespace between tags is generally insignificant in HTML. Text content and attributes are preserved.