Free HTML Formatter & Beautifier
Beautify HTML in your browser with js-beautify. Adjustable indent, local processing, and copy-friendly output.
Sample HTML
About HTML Formatter
Pretty-print markup with `js-beautify`’s HTML printer: set indent, wrap width, and newline limits, then copy output.
How it works (technical)
Library: `js-beautify` — `import { html as beautifyHtml } from 'js-beautify'`. Call: `beautifyHtml(input, { indent_size, wrap_line_length: 80, preserve_newlines: true, max_preserve_newlines: 2 })`.
Whitespace-only transformation; browser rendering is unchanged. Not a substitute for an HTML validator or linter.
Processing stays in the tab; nothing is sent to WebTooly for formatting.
When to use it
Minified HTML
Expand one-line markup from a bundle before you diff or review.
Pasted snippets
Normalize indentation for CMS fields, email HTML, or docs.
Nested structure review
Make tags easier to scan than a single compressed line.
How to Use HTML Formatter
- 1Paste your HTML code into the input area on the left.
- 2Select your preferred indentation size (2 spaces, 4 spaces, or tabs).
- 3Click the "Format HTML" button to beautify your code.
- 4Copy the formatted result from the output area.
Key Features
- `js-beautify` HTML module
- Indent: 2, 4, or tab
- Dual textarea + copy
Benefits
- •Same parser family many editors use for beautify
- •No upload of source
- •Fast feedback on paste
Frequently Asked Questions
Will formatting change how my HTML renders?
No, HTML formatting only adds whitespace and indentation. The visual output in browsers will remain exactly the same.
Can I format HTML with inline CSS and JavaScript?
Yes, the formatter handles HTML with embedded styles and scripts. For best results with complex code, consider using our CSS and JavaScript formatters separately.
What indentation should I use?
2 spaces is the most common standard for web development. 4 spaces is also popular. Choose what matches your team's coding standards.