Free HTML Beautifier Online
Free HTML Beautifier Online is a free online tool by US AI. Paste messy, minified or badly-indented HTML and get back clean, consistently-indented markup with one tag per line. It runs completely in your browser — no signup, no download, nothing is uploaded.
📖 How to use
- Paste your minified or messy HTML into the box above, choose your indent style and press Beautify.
- Copy the formatted output to your clipboard, or download it as an .html file.
- Your work stays on your device; nothing is uploaded anywhere.
✨ Why use this tool?
US AI's free HTML beautifier is fast, private and 100% free forever. It puts every block-level tag on its own line with clean nesting, keeps <pre>, <script>, <style> and <textarea> content untouched, and optionally strips comments. Bookmark this page and share it with anyone who reads code.
❓ Frequently asked questions
What does an HTML beautifier do?
An HTML beautifier takes messy, minified, or badly-indented HTML and reformats it with clean, consistent indentation and one tag per line, so the structure is easy to read and debug.
Will beautifying change how my page looks?
No. Beautifying only changes whitespace and indentation between block-level tags. Content inside <pre>, <script>, <style> and <textarea> is left completely untouched, so your page renders exactly the same.
Can I choose between spaces and tabs for indentation?
Yes. Use the indent dropdown above the Beautify button to pick 2 spaces, 4 spaces, or a tab character.
Is my HTML code uploaded anywhere?
No. Formatting runs 100% in your browser — your code is never sent to a server or stored anywhere.
Can I also minify HTML here?
This tool formats HTML for readability. To shrink HTML for production, use our free HTML/CSS/JS Minifier, which strips whitespace and comments instead.
Does it work on mobile?
Yes. The beautifier works in any modern browser on mobile and desktop — just paste your code and tap Beautify.