Free HTML tool

HTML formatter and beautifier.

Q: How do I format HTML online?

Paste your HTML into the editor on this page and it is reformatted with clean indentation instantly, no signup. Choose 2 spaces, 4 spaces, or tabs, then copy the result or publish it as a live page.

Q: Is this HTML formatter free?

Yes, formatting is completely free with no account required. Publishing the result as a live page is also free to try, no credit card.

Q: Can I publish the formatted HTML as a real page?

Yes. Once your HTML is clean, click Publish and yapp.page hosts it at a live, shareable URL in about two seconds. Sign in (free) to keep the page for 30 days.

Paste messy or minified HTML and get clean, indented code instantly, right in your browser. When it looks right, publish it as a real shareable link in one click.

Clean, indented HTML

Indent

Your HTML

Formatted

01 Format, then publish

Clean instantly: paste minified or messy HTML and it is re-indented as you type.
Your choice of indent: 2 spaces, 4 spaces, or tabs.
Private: formatting runs in your browser, your code is never uploaded unless you publish.
Ship it: happy with it? Publish to a live yourname.yapp.page link in about two seconds.

02 How to format HTML online

Paste your HTML

Drop your markup into the editor on the left. Minified, single-line, or just untidy, it all works, including inline CSS and JavaScript.

Copy the clean result

The formatted code appears on the right with your chosen indentation. Copy it back into your project.

Publish it live

Want to share it? Click Publish to turn the HTML into a real, shareable link with a clean preview and a QR code.

Built it with AI? Connect yapp.page to ChatGPT or Claude and just say "publish this HTML." Set it up →

03 Frequently asked questions

How do I format HTML online?

Paste your HTML into the editor above and it is reformatted with clean indentation instantly, no signup. Choose 2 spaces, 4 spaces, or tabs, then copy the result or publish it.

Is this HTML formatter free?

Yes, formatting is free with no account required, and publishing the result as a live page is free to try, no credit card.

Does it work on minified HTML?

Yes. Paste minified or single-line HTML and it is expanded into readable, properly indented code, including inline CSS and JavaScript.

Is my HTML uploaded anywhere?

No. Formatting runs entirely in your browser, so your code is never sent to a server unless you choose to publish it.

Can I publish the formatted HTML as a real page?

Yes. When it looks right, click Publish and yapp.page hosts it at a live URL in about two seconds. Sign in (free) to keep the page for 30 days.

HTML viewer and tester →
Host an HTML file online, free →
How to publish an HTML website →
Free one-page website builder →
Let ChatGPT publish a live webpage →
Set up yapp.page with your AI client →