Free HTML Formatter / Beautifier

How to Format HTML

Paste your HTML into the input panel and the formatted output appears instantly on the right. Use the Format/Minify toggle to switch between pretty-printed and compressed output. Choose your preferred indentation size from the dropdown. You can also drag and drop an HTML file, then download the formatted result.

Why Format HTML

Well-formatted HTML is easier to read, debug, and maintain. Proper indentation makes the document structure visible at a glance — you can quickly identify nesting errors, unclosed tags, and structural issues. For production, minified HTML reduces file size and improves page load performance by removing unnecessary whitespace and line breaks.

Frequently Asked Questions

What does this HTML formatter do?

It takes unformatted or minified HTML and adds proper indentation and line breaks so the markup is easy to read. You can also switch to minify mode to remove all whitespace and reduce file size.

Can I choose the indentation size?

Yes — you can choose between 2 spaces, 4 spaces, or tab-based indentation. The default is 2 spaces.

Does it fix broken HTML?

No — this tool formats the structure of valid HTML. It does not fix missing closing tags, invalid nesting, or syntax errors. For that, use a dedicated HTML validator.

Can I upload an HTML file?

Yes — you can drag and drop an HTML file onto the input area or click the Upload File button. The formatted output can be downloaded as a file.

Is my HTML sent to a server?

No — all formatting happens locally in your browser using JavaScript. Your HTML is never uploaded or stored anywhere. It's safe to use with proprietary or sensitive markup.

What is HTML minification?

Minification removes unnecessary whitespace, line breaks, and indentation from HTML to reduce file size. This is useful for production deployment where smaller file sizes improve page load times.