Is my XML uploaded anywhere?

No. The formatter runs entirely in your browser using JavaScript. Your XML is never sent to a server, which is why it works offline once the page has loaded.

How accurate is the formatting?

The tool re-indents based on tag nesting depth — opening tags indent, closing tags dedent, and self-closing tags, comments and the XML declaration are left on their own line. It tidies layout but does not validate against a schema or DTD, so it will not catch semantic errors.

Does it preserve my data?

Yes. Only whitespace between tags is changed. Attribute values, text content, comments and CDATA sections are kept exactly as written.

XML Formatter & Minifier

XML formatter and minifier

Paste raw or minified XML and get back a clean, indented document — or collapse a formatted file back down to a single line. Indentation tracks tag nesting: each opening tag indents its children, each closing tag dedents, and self-closing tags, comments and the <?xml ?> declaration stay on their own line.

It is privacy-first: the formatter is plain JavaScript that runs in your browser, so your XML never leaves your device. It tidies layout only — it does not validate against a schema, so existing structure and content are preserved exactly.