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XML Validator
Check whether XML is well-formed, with a clear error message if it isn't. Free online tool that works entirely in your browser — no upload required.
Select fileor drop files here
Files stay on your deviceUp to 100MB per fileNo account needed
Help with this tool
Is validating XML with PDFPilot really free?
Yes. XML Validator is completely free to use, with no sign-up or account required.
Are my files uploaded to a server?
No. The validation runs entirely in your browser using DOMParser. Your file is never uploaded to PDFPilot's servers.
Does this check against an XML Schema (XSD) or DTD?
No — this checks well-formedness (correct tag nesting, matching open/close tags, valid syntax), not validity against a specific schema. It won't catch a document that's syntactically correct XML but doesn't match your particular schema's rules.
Does this download anything?
No — this tool just checks well-formedness and shows the result on screen. Use XML Formatter if you also want a downloadable, cleanly-indented copy.
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