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HTML Formatter

Format and validate HTML

htmlformat
Tool
Pretty print HTML, validate markup, and check for errors.
About this tool

Type

formatter

Input

code

Output

code

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Features
  • ✓ Free to use
  • ✓ No registration required
  • ✓ No file size limits
  • ✓ Fast processing
  • ✓ Secure & private
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What is HTML Formatter?

HTML Formatter takes messy, minified, or unindented HTML and transforms it into clean, readable code with proper indentation and line breaks. It is essential for debugging HTML, reviewing code, or making vendor-provided HTML human-readable.

How to Use HTML Formatter
  1. 1Paste your HTML code into the input field.
  2. 2Choose your indentation preference (2 spaces, 4 spaces, or tabs).
  3. 3Click "Format HTML" to produce clean, indented output.
  4. 4Copy the formatted code or download it as an .html file.
Common Use Cases
  • →Making minified HTML from websites readable for debugging.
  • →Standardising code style across team projects.
  • →Reviewing HTML email templates that arrive as single-line strings.
  • →Formatting HTML exported from design tools before use.
  • →Cleaning up copy-pasted HTML before editing.
Frequently Asked Questions

Does formatting change the way the HTML renders?

No. Formatting only affects whitespace and indentation. The visual output in a browser remains identical.

Does it validate HTML as well?

The formatter highlights syntax issues. For full validation, use the dedicated HTML validator tools.

Can I format very large HTML files?

Yes. The tool handles large HTML inputs efficiently in the browser.

Does it support HTML5 tags?

Yes. All HTML5 elements and attributes are correctly formatted.