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HTML Formatter — Beautify HTML Markup Online

HTML Formatter uses Prettier to apply consistent indentation and formatting to HTML markup. It handles nested elements, attributes, and inline content correctly.

Common Use Cases

  • Formatting HTML templates copied from minified sources
  • Beautifying HTML email templates
  • Standardizing HTML formatting before code review

Frequently Asked Questions

How do I format HTML online?

Paste your HTML into SmartDevBox. The HTML Formatter detects HTML (looks for <!DOCTYPE, <html, <div, <p, or <span) and applies Prettier formatting automatically.

Privacy & Security

This tool runs entirely in your browser using client-side JavaScript. No data is sent to a server — your input never leaves your machine. SmartDevBox has no account system, no usage tracking, and no paid tier. See the Privacy & Security page for full details.

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