XML Formatter & Beautifier

Clean and indent raw XML instantly. Processed locally in your browser.

Drop an XML file or click to browseMax 25 MB. All file contents remain entirely client-side.

Raw XML

Formatted Output

Why use an XML Formatter?

XML (eXtensible Markup Language) is heavily used in enterprise software, RSS feeds, and legacy APIs. Raw XML is often collapsed into an unreadable wall of text. Our XML Beautifier uses custom Regex to instantly clean, line-break, and perfectly indent your tags for maximum readability.

Zero-Server Security Guarantee

Enterprise XML often contains highly sensitive configuration data. ZeroServer.tools never transmits your data. The formatting engine is written purely in JavaScript and runs locally on your machine, ensuring complete privacy.

Frequently Asked Questions

Does XML formatting change the data or semantics?

No. Formatting only adds whitespace between elements. Attribute values, text content, CDATA sections, and namespace prefixes are all preserved exactly as written.

Is my XML private?

Yes — all processing happens in your browser via JavaScript. Your XML document is never transmitted to a server, even for well-formedness checking.

Why does my XML fail to format?

Common issues: unclosed tags, mismatched open/close tag names, unquoted attribute values, or unescaped special characters in text content. Use < for <, > for >, and & for & in text nodes.

Can it handle XML with namespaces?

Yes. Namespace declarations (xmlns:prefix='...') and prefixed tags (prefix:element) are handled correctly and preserved in the formatted output.

What's the difference between well-formed and valid XML?

Well-formed means correctly nested tags, a single root element, and properly quoted attributes. Valid means it also conforms to a DTD or XML Schema. This tool checks well-formedness.

Private & free — this tool runs entirely in your browser.