01
Paste the source
Paste one XML document directly into the editor. Nothing is uploaded.
Developer Tools
XML Formatter & Validator
Validate XML and format structural documents locally, without silently rewriting mixed text content.
73 / 250,000 characters
Validated output
Data handling
Storage and export controls
- Retention
- The tool's working state is kept only while this page is open. Inputs and results are not saved to persistent storage by Got A Tool.
- Export
- The tool may prepare a result after you run it. It downloads or copies it only when you choose that action.
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How it works
Validate XML before you share or import it
02
Check the structure
The validator reports malformed nesting, quotes, or entity references instead of trying to repair them.
03
Copy a safe format
For structural XML, copy the readable indented form after reviewing it.
Important limit
Valid XML is not automatically valid for a particular system.
This page checks XML well-formedness only. It does not fetch or validate XSD, DTD, namespaces required by another application, business rules, signatures, or referenced files. It also refuses to add indentation to mixed text-and-element content because whitespace can be meaningful there.
No repair guesses
Malformed input is reported instead of silently repaired.
Mixed content protected
Formatting is withheld when added whitespace might change the document.
Structural summary
Review the root element plus element and attribute counts.
Local processing
Pasted XML stays in the browser tab.
FAQ
Common questions
Does this validate my XML schema?
No. It checks whether the document is well-formed XML, not whether it meets a particular XSD or application rule.
Why is there no formatted copy?
Your document contains mixed text and child elements. Adding indentation could alter meaningful whitespace, so the tool leaves the validated source untouched.
Does it fetch linked files or DTDs?
No. It does not make network requests for schemas, referenced resources, or external entities.
Keep working
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