Does this HTML tool change program behavior?

It only changes layout or removable whitespace. Review minified output before production use when code relies on unusual syntax.

Processing is local and your code is never uploaded.

HTML Formatter

Format and indent HTML code into a clean, readable structure directly in your browser.

This tool runs entirely in your browser. Your files are never uploaded to a server.

<main>
  <h1>
    Hello
  </h1>
  <p>
    World
  </p>
</main>

What this formatter does

Splits HTML-like input into tags, comments, declarations, and text tokens, then places tokens on indented lines. Nested non-void elements add two spaces per level; known HTML void tags and self-closing tags do not increase indentation.

How to use it

Paste markup, inspect the result that appears immediately, and copy it when ready. Reset empties the editor and does not restore the sample.

Important limitations

This is a lightweight token formatter, not an HTML parser, validator, sanitizer, accessibility audit, or browser renderer. It trims the edges of text tokens, does not repair invalid nesting or missing tags, and may mis-handle literal angle brackets or tag-like content inside script, style, template, and embedded-language blocks. It does not beautify CSS or JavaScript inside those elements.

How indentation is tracked

Each recognized opening tag pushes the indent level up by two spaces and the matching closing tag pulls it back down; void elements like `<img>` and `<br>`, and any tag written with a trailing `/>`, never push the level since they cannot contain children.

Example

Pasting `<div><p>Hello</p><img src="a.png"></div>` produces `<div>` on its own line, an indented `<p>Hello</p>`, an indented `<img src="a.png">` at the same level since it's void, and a closing `</div>` back at the base level.

Safe review workflow

Render the formatted markup in a real browser before publishing, and pay special attention to inline elements next to text and to any script or style block, since whitespace changes there can alter spacing or break embedded code.

Safe workflow and privacy

Keep the source and test the result in a browser, especially for whitespace-sensitive inline content and embedded code. Processing is local and pasted markup is not uploaded.

Frequently Asked Questions

What does the HTML Formatter do?: Format and indent HTML code into a clean, readable structure directly in your browser.
Does this HTML tool change program behavior?: It only changes layout or removable whitespace. Review minified output before production use when code relies on unusual syntax.
Is my code uploaded?: Processing is local and your code is never uploaded.

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