About this tool
Beautify and indent HTML markup. Useful when reviewing API responses, cleaning config before commit, or sharing readable snippets in docs and PRs.
Paste compressed HTML into Input. Click Beautify to indent tags and text nodes. Example — Expand a compact fragment: try `<main><h1>Docs</h1><p>Hello <strong>world</strong></p></main>` and expect something like `<main> <h1> Docs </h1> <p> Hello <strong> world </strong> </p> </main>`.
Beautify is structural indentation — it does not fix accessibility or semantic mistakes. See also: HTML Minifier, and CSS Formatter. Runs in your browser — nothing you paste gets uploaded.
How to use
- Paste compressed HTML into Input.
- Click Beautify to indent tags and text nodes.
- Copy the Output when reviewing markup or preparing examples.
- For invalid HTML, fix unclosed tags if Beautify produces odd nesting.
Example
Expand a compact fragment
Input
<main><h1>Docs</h1><p>Hello <strong>world</strong></p></main>
Output
<main>
<h1>
Docs
</h1>
<p>
Hello
<strong>
world
</strong>
</p>
</main>Limitations
- Beautify is structural indentation — it does not fix accessibility or semantic mistakes.
- Void elements and inline quirks can still produce awkward wraps; tweak by hand for production templates.
- Scripts and complex SVG may not format as cleanly as simple document fragments.
Related tools
2Frequently asked questions
What does the HTML Beautifier do?
Beautify and indent HTML markup. Runs in your browser — no install, no account.
How do I use the HTML Beautifier?
Paste compressed HTML into Input. Click Beautify to indent tags and text nodes. Copy the Output when reviewing markup or preparing examples. For invalid HTML, fix unclosed tags if Beautify produces odd nesting.
Is the HTML Beautifier free?
Yes. No signup, no usage limits, no paywall.
Does the HTML Beautifier upload my data?
No. Processing happens locally in JavaScript. Your input is not uploaded, stored, or logged.
What are the limitations of the HTML Beautifier?
Beautify is structural indentation — it does not fix accessibility or semantic mistakes. Void elements and inline quirks can still produce awkward wraps; tweak by hand for production templates. Scripts and complex SVG may not format as cleanly as simple document fragments.