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HTML Formatter error
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// about this tool

HTML Formatter Online

Updated 2026-07-09

Beautify and pretty-print minified or messy HTML right in your browser. Paste raw markup into the editor and SnapTools returns clean, properly indented output as you type — with configurable spacing and one-click copy or download. Nothing is uploaded: all formatting happens locally, so it's safe for private templates and unreleased pages.

Well-indented HTML is far easier to read, debug, and review than a single compressed line. Whether you're inspecting build output, untangling deep nesting, or preparing markup for documentation, the HTML Formatter gives you readable structure in one step.

// how to use

  1. 1 Paste or type your HTML into the input panel on the left — formatting starts as you type.
  2. 2 Open Settings to choose indentation (2, 4, or 8 spaces) for nested elements.
  3. 3 Read the clean, indented markup on the right, then click Copy or Download.

// examples

Minified to readable
Input
<div class="card"><h2>Title</h2><p>Body text</p></div>
Output
<div class="card">
  <h2>Title</h2>
  <p>Body text</p>
</div>
Nested list
Input
<ul><li>One</li><li>Two<ul><li>Two-A</li></ul></li></ul>
Output
<ul>
  <li>One</li>
  <li>Two
    <ul>
      <li>Two-A</li>
    </ul>
  </li>
</ul>

// common uses

Making minified template output readable Reviewing markup before a code review Debugging nesting and structure issues Cleaning up HTML copied from a build tool

// faq

No. Formatting runs entirely in your browser, so your markup never leaves your machine — safe for private templates and unreleased pages.
No. The formatter only adds indentation and line breaks for readability; it does not alter tags, attributes, or content, so the rendered output stays identical.
HTML formatting understands void elements like img and br and HTML-specific structure, while the XML Formatter expects every tag to be closed. Use the XML Formatter for strict XML documents.
It indents based on the structure it finds but does not repair malformed markup. Unbalanced tags may produce uneven indentation, which is a useful hint that something is wrong.
This tool beautifies for readability. To shrink markup, remove the indentation manually or use a dedicated minifier.

// related

XML Formatter SQL Formatter JSON Formatter Sort & Dedupe Lines Slug Generator

Use this via API

Get a free API key → 
curl -X POST https://snaptools.dev/api/v1/tools/html-formatter \
  -H "Authorization: Bearer YOUR_API_KEY" \
  -H "Content-Type: application/json" \
  -d '{"html":"<div class=\"card\"><h2>Title</h2><p>Body text</p></div>"}'
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