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XML Formatter & Validator

Beautify and validate XML with indentation options. Runs entirely in your browser.

Drag & drop a XML file
155 chars · 155 BEst output: —

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Formatted XML

Your formatted XML will appear here after validation.

Validation & stats

Well-formedness, namespaces, and size comparison.

Format XML to see validation details.

Developer tools

Test XPath queries or apply XSLT transforms.

XPath tester

No matches yet.

XSLT transformer

How to use

  1. Paste your XML and choose indent size (2 or 4 spaces).
  2. Click Format to validate and beautify the XML.
  3. Copy or download the formatted XML.

Notes & privacy

Parsing runs locally in your browser; XML is not uploaded.

Very large documents are capped (~200KB) to keep the UI responsive.