HTML Formatter

Format and minify HTML — with proper tag indentation

Free Client-Side No Login No Storage

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How to Use the HTML Formatter

Paste your HTML.
Choose Format or Minify mode.
Select indent style and click Format.

Indents nested tags, handles self-closing and void elements, or minifies by stripping comments and whitespace.

What is HTML Formatting & Beautification?

The HTML Formatter is an online code beautifier that transforms messy, minified, or unaligned HTML5 source code into clean, perfectly indented markup. It properly nests elements, formats attributes, respects inline vs block tag boundaries, and makes raw website source code effortless to read and debug.

Common Uses

Beautifying minified production HTML extracted from web inspector tools
Cleaning raw HTML output generated by WYSIWYG editors and email marketing templates
Standardizing markup indentation for team pull requests and code reviews
Formatting dynamically assembled DOM trees for documentation and tutorials

Frequently Asked Questions

Does formatting HTML affect how the page renders in a browser?

Standard HTML collapses multiple consecutive whitespaces into a single space, so beautification does not alter visual layout. However, the formatter carefully preserves whitespace inside `

`, ``, and `` elements.</p>

    <h3>Can I format HTML that contains embedded CSS and JavaScript?</h3>
    <p>Yes. The formatter identifies `<style>` and `<script>` blocks, formatting internal CSS rules and JavaScript functions with appropriate indentation levels.</p>

    <h3>Is my proprietary HTML markup uploaded to any server?</h3>
    <p>No. All formatting logic runs entirely inside your browser using client-side JavaScript. Your code and templates remain 100% private.</p>
    </section>
    
    <section class="seo-content field-notes" aria-labelledby="field-notes-heading">
      <h2 id="field-notes-heading">Notes from this implementation</h2>
      
<h3>Pretty print is not a sanitizer</h3>
<p>The formatter indents tags so you can read a document. It does not remove scripts, event handlers, or tracking pixels. A formatted page with a <code><script></code> still has that script. Use the HTML encoder when the goal is to show the tags as text. Use this page when the goal is to read the tags.</p>
<p>Void elements (<code>br</code>, <code>img</code>, <code>input</code>) should not gain a close tag that changes how a browser parses the following content. If the formatter “fixes” those, check the result in a browser before you replace the original. Minified HTML from a build is safe to format for reading and unsafe to commit back over the build output.</p>
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