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Code & Data Tool
XML Validator
Validate XML structure with helpful messages.
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About this tool
What is XML Validator?
XML Validator checks that XML is well-formed and gives helpful messages when it is not, such as mismatched or unclosed tags.
Useful when you need to
- Check an XML data file
- Find a typo in a tag name
- Confirm a sitemap is well-formed
How to use
How to use XML Validator
01 02 Validate
Run the check.
03 Read the message
Find the reported problem.
04 Correct
Fix the XML and run again.
Tips
Get better results
- Well-formed is not the same as schema-valid.
- Special characters like & must be escaped as & in XML.
FAQ
Frequently asked questions
Does it check against an XSD?
No, only well-formedness.
Is it private?
Yes.
Why does an ampersand fail?
Raw & characters are not allowed in XML text and should be written as &.
More practical guides · File handling and privacy · Report an incorrect instruction