XML Formatter: Pretty-Print and Validate XML Documents
XML is verbose and easy to break — a single misplaced bracket can render a document unparseable. This formatter pretty-prints XML for readability, validates structure, and minifies for transmission.
XML is the older cousin of JSON — more verbose, more rigid, but still ubiquitous in enterprise systems, RSS feeds, SOAP APIs, configuration files, and documents (Office files are zipped XML). Like JSON, XML has well-defined parse rules; getting them wrong produces a parse error rather than wrong data.
Common XML mistakes the formatter helps catch
- •Unclosed or mismatched tags
- •Reserved characters (&, <, >) used unescaped inside text
- •Incorrect attribute quoting
- •Multiple root elements (XML requires exactly one)
- •Whitespace-sensitive content broken by aggressive pretty-printing
Extended FAQ
Should I use XML or JSON for new projects?
JSON for almost everything new. XML is appropriate when the system you're integrating with requires it, or when you need features XML offers but JSON doesn't (namespaces, schema validation via XSD, mixed content).
Are my XML documents stored?
No — runs entirely in your browser.