◨ DEVELOPER Updated July 25, 2026

XML Formatter

Indent and validate XML, or collapse it to one line.

XML
Result
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How it works

Your XML is parsed with the browser's native DOMParser, so malformed documents are reported with the parser's own message. Valid documents are re-serialised with one node per indented line.

Related tools

◧JSON Formatter◪HTML Formatter◫SQL Formatter

Frequently asked questions

What counts as invalid XML?

Unclosed tags, mismatched names, stray ampersands, and multiple root elements will all be rejected — XML is much stricter than HTML.

Does it handle namespaces?

Yes. Namespace prefixes and xmlns declarations are preserved exactly as written.

Comments

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