Free Online XML Formatter & Validator

Paste XML above and click Beautify to re-indent nested elements, or Validate to check that the document is well-formed — every opening tag closed, attributes quoted, entities legal. Minify strips comments and inter-tag whitespace for smaller payloads. Processing is entirely local: sitemaps, feeds, SOAP envelopes and config files never leave your machine.

What this XML beautifier handles

Sitemaps — check sitemap.xml structure before submitting to Google Search Console.
RSS and Atom feeds — a single unclosed tag breaks feed readers; validation catches it instantly.
SVG files — SVG is XML, so you can tidy exported graphics before committing them.
SOAP and API payloads — re-indent machine-generated envelopes for debugging.
Configuration files — Maven pom.xml, Android manifests, .NET config and similar.
XML declarations, comments and self-closing tags are all preserved and indented correctly.

Well-formed vs valid XML

Well-formed means the syntax is correct: tags nest properly, every element closes, attribute values are quoted, and reserved characters are escaped (&, <). Valid additionally means the document conforms to a specific schema (DTD or XSD). This tool checks well-formedness — the level virtually all everyday XML problems live at. If your feed or sitemap fails in another system, well-formedness is the first thing to rule out.

Common XML errors

Unescaped ampersands in URLs — & must be written as &.
Mismatched or crossed tags — <a><b></a></b>.
Unquoted attribute values, which HTML tolerates but XML forbids.
Multiple root elements — an XML document must have exactly one.

Frequently asked questions

Does it validate against my XSD schema?

No — it checks well-formedness, which covers the overwhelming majority of practical errors. Schema validation requires the schema file and is best done in your build pipeline.

Will it preserve my XML declaration and comments?

Yes when beautifying. Minify removes comments by design, since they add bytes with no machine meaning.

Is my data uploaded anywhere?

No. Parsing uses your browser's built-in DOMParser, entirely offline-capable.