Online HTML Formatter

Format HTML with clean indentation and line breaks; improve tag readability.

Loading tool...

How to use

Paste or type your input in the left editor
Adjust options in the toolbar if available
Copy or download the output from the right pane

This free online tool runs entirely in your browser. No sign‑up, no server uploads.

About HTML Beautifier

Format HTML with clean indentation and line breaks; improve tag readability.

The HTML beautifier parses your input into a DOM-like token stream, identifying opening tags, closing tags, void elements, comments, and text nodes. It then reconstructs the markup with consistent indentation, placing each block-level element on its own line while keeping inline elements together. Special handling is applied to <pre>, <code>, <style>, and <script> blocks to preserve their content formatting where appropriate.

Use the left editor to enter your data. The output updates in real time. You can copy, clear, download, or expand either pane.

Tip: Use the search bar to quickly switch between tools.

Sample HTML

<div class="note">Tom & Jerry</div>

Example input shown above. Output appears in the right pane instantly.

Why this tool?

Feature	HTML Beautifier	Typical alternatives
Free online tool	Yes	Often yes
Client‑side only (privacy)	Yes	Varies
No sign‑up required	Yes	Varies

Explore related tools

Looking for more? Browse All tools or check categories like Beautifier, Minifier, and Validators.

Related tools

FAQs

Does the HTML beautifier handle inline styles and embedded scripts?

Yes. The beautifier recognizes <style> and <script> blocks and formats their contents using appropriate CSS and JavaScript formatting rules respectively. HTML structure, embedded CSS, and inline JS are all properly indented.

Can I format minified HTML from a production website?

Absolutely. Paste any minified or compressed HTML and the beautifier will add proper indentation, line breaks, and structure. This is especially useful when inspecting production pages or debugging minified markup from build tools like Webpack or Vite.

Does the formatter handle self-closing tags and void elements?

The beautifier correctly handles HTML5 void elements (like <br>, <img>, <input>, <hr>) as well as XHTML-style self-closing tags. It preserves the closing slash where present and formats them inline as expected.

Will formatting break my HTML template syntax (e.g., Handlebars, EJS)?

The beautifier is designed for standard HTML and may reformat template syntax delimiters (like {{ }}, <% %>) in unexpected ways. For best results, format the HTML portions and template syntax separately.

Can I control the indentation size when formatting HTML?

Yes. You can choose between 2-space, 4-space, or tab-based indentation to match your project's coding standards. The chosen indentation is applied consistently to all nesting levels in the document.