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HTML Beautifier / Formatter

Format and indent HTML code for readability with customizable indentation size.

HTML Beautifier / FormatterGratisCSS & DevRuns in your browser

Works in your browser. What you paste or upload is processed on your device.

Key features of the HTML beautifier

  • Formats HTML with consistent indentation
  • Properly nests tags for visual hierarchy
  • Adds newlines between block elements
  • Handles inline vs block element distinction
  • Preserves text content exactly

How to use the HTML beautifier

  1. Paste your HTML

    Enter minified or messy HTML into the beautifier.

  2. Beautify

    Click 'Beautify HTML' to format and indent the code.

  3. Review the formatted HTML

    See properly structured, indented HTML output.

  4. Copy the result

    Click 'Copy' to copy the beautified HTML.

  5. Use for editing or debugging

    Paste into your editor, inspect the structure, and make the changes you need.

What is an HTML beautifier?

The HTML Beautifier formats minified, compressed, or poorly indented HTML into clean, properly structured code with consistent indentation, proper tag nesting, and readable formatting. It transforms a single-line minified document into readable, editable HTML in seconds.

When working with minified HTML from production sites, CMS output, or email templates, the beautifier makes the code immediately readable for debugging, modification, or understanding the document structure.

Why use an HTML beautifier?

Debugging or editing minified HTML is impractical. The beautifier restores readability instantly — enabling you to understand template structures, find specific elements, debug rendering issues, and make modifications to HTML you received or inherited without source files.

HTML beautifier: frequently asked questions

Something else? Ask the team

Does HTML beautification change the rendered output?

No. Whitespace between block elements doesn't affect rendering. The visual appearance of the page is identical — only the code readability is improved.

Can I set indentation size?

Yes. Choose between 2-space, 4-space, or tab indentation to match your team's coding standards.

Will it handle malformed HTML?

The beautifier attempts to format the HTML as given, but malformed HTML (unclosed tags, mismatched nesting) may produce unexpected formatting. Valid HTML produces clean output.

Can I use this for email template HTML?

Yes. Email HTML is often written in a condensed style. Beautifying it makes the table-heavy layout readable for debugging compatibility issues across email clients.

What is the difference between HTML formatting and linting?

Formatting adds whitespace and indentation for readability. Linting validates HTML against standards, flagging errors and accessibility issues. This tool formats; use a validator for linting.

Each one opens on its own page and works straight away, with no sign-up.

Ontdek meer gratis tools:Schema GeneratorMetatag GeneratorLLMs.txt GeneratorBrowse all free tools

Meer AI-vermeldingen winnen?

HTML Beautifier / Formatter is one piece of the puzzle. See how ChatGPT, Gemini, Perplexity, and Google AI Overviews actually view your brand, and get a prioritised list of fixes, with a free AEO & GEO audit from AI Rank Lab.

One check is a start. The audit checks the whole site.

Voer een gratis AEO- en GEO-audit uit or Bekijk prijzen.

  • Scores SEO, answer-engine (AEO) and generative-engine (GEO) readiness
  • Lists the fixes, page by page
  • Then track whether ChatGPT, Gemini, Perplexity and Google AI Overviews cite you
fieldnote.app4,571 credits

Site audit

fieldnote.app · SEO, AEO and GEO

Illustrative data
SEO
82
+6
AEO
64
+11
GEO
58
+9
Pages
48
Fixesby impact
  • /pricing · Missing H1High
  • /blog/guide · No FAQ schemaMedium
  • /llms.txt · Not foundMedium
  • /about · Meta description too longLow

See where your whole site stands

Paste your site. The free audit scores it for SEO, answer engines and generative engines, with the fixes.

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