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HTML Formatter

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HTML Formatter — Beautify HTML Online Free

What is HTML Formatter?

Format and beautify HTML with proper indentation. Make minified HTML readable online.

The HTML Formatter adds proper indentation and line breaks to minified or compact HTML. Paste your HTML—whether from a CMS, template, or scraper—and get clean, readable output. The tool parses the HTML and reformats it with consistent indentation. Useful for code review, debugging, and learning HTML structure. All processing runs in your browser.

How to Use HTML Formatter

  1. Paste or type your input into the editor on the left panel.
  2. Results update automatically while you type. You can also press Ctrl+Enter to force a refresh.
  3. View the result in the output panel on the right with full syntax highlighting.
  4. Use Copy or Download to export the result.
  5. Drag and drop .json or .txt files directly into the editor.

Example

Input:

<div><span>Hello</span><p>World</p></div>

Output:

<div>
  <span>Hello</span>
  <p>World</p>
</div>

Common Use Cases

  • Format minified HTML
  • Prepare HTML for review
  • Debug markup structure

Formatted vs Minified HTML

Readability
Indented tags
Single line
Editing
Easy to modify
Hard to read
Size
Larger
Smaller

Common Errors

  • Unclosed tags
  • Invalid nesting
  • Special characters in attributes

Why Use Our HTML Formatter?

  • 100% client-side — your data never leaves your browser. No server processing, no data collection.
  • No sign-up required — start using the tool instantly with no registration or installation.
  • Keyboard shortcuts — press Ctrl+Enter to run, ? for shortcuts list, Ctrl+B to toggle sidebar.
  • Persistent state — your input is automatically saved across sessions using local storage.
  • IDE-style interface — Monaco Editor (the engine behind VS Code) with syntax highlighting and error detection.
  • Multi-format conversion — convert between JSON, XML, CSV, and YAML without switching tools.

Frequently Asked Questions

What is an HTML formatter?

An HTML formatter adds indentation and line breaks to HTML to make it readable.

Does it fix invalid HTML?

The browser parser may correct some errors, but malformed HTML can produce unexpected output.

Will formatting change how the page renders?

No. Whitespace changes do not affect HTML rendering.

Is my HTML sent to a server?

No. Formatting happens entirely in your browser.

Can I format large HTML files?

Yes. The tool handles large inputs limited only by browser memory.

Try HTML Formatter Now

Paste your data into the editor above for instant processing. Use Ctrl+Enter anytime to re-run quickly.

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