LocalToolsOffline browser tools collection

Category: Developer tools

HTML Formatter

System ideaMissing a tool?

Indent and beautify HTML locally, without touching script or style content

Paste HTML to re-indent nested tags for readability. Content inside <script>, <style>, <textarea> and <pre> is left untouched so embedded code and formatting never break. Runs entirely in your browser.

Formatted.

Original size166 BFormatted size204 B
Formatted HTML
<main>
  <!-- LocalTools example -->
  <h1>Offline browser tools</h1>
  <p>
    Everything runs
    <b>on your device</b>
    .
  </p>
  <ul>
    <li>No upload</li>
    <li>No account</li>
  </ul>
</main>

This is a lightweight indenter, not a validator — it will not fix mismatched or unclosed tags.

Everything on this page is processed in your browser. Nothing is uploaded.

What this tool does

An HTML formatter re-indents nested elements so a deeply nested page structure is easy to scan without a browser dev tools panel. This tool is a lightweight indenter, not a full parser: it recognizes tags, comments and the doctype, but it does not validate markup or repair mismatched tags.

How to use it

  1. Paste your HTML into the input box, or load the example.
  2. Choose 2 or 4 space indentation.
  3. Copy the formatted output back into your project.

Privacy

This tool runs entirely in your browser. Your input is never uploaded, stored or shared — closing the tab removes it.

Frequently asked questions

Is my HTML uploaded anywhere?
No. Formatting happens in JavaScript running in the page, so your markup never leaves your device.
Does it touch the content inside <script> or <style> tags?
No. Embedded JavaScript and CSS are copied through exactly as written, since reflowing them could change meaning.
Will it fix broken or mismatched HTML?
No. It only re-indents based on the tags it finds; it does not validate or repair invalid markup.

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