XML Validator
Validate XML online to check whether a document is well-formed. Find mismatched tags, parser errors, and malformed XML before formatting or converting it.
When to use this tool
Your XML parser reports an error and you need to locate the issue.
You want to check XML before converting it to JSON.
Examples
Mismatched tag
Input
<user><name>Ada</user>
Output
Invalid XML: opening and ending tag mismatch
Developer use cases
Validate XML API responses.
Check XML feeds before publishing.
Common mistakes to avoid
Mismatched opening and closing tags.
Unescaped ampersands in text.
Multiple root elements.
Format and behavior notes
XML must have one root element.
Special characters like ampersands must be escaped.
Validation checks syntax, not an XSD schema.
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Frequently Asked Questions
What does the XML validator check?
It checks whether XML is well-formed and can be parsed by an XML parser.
Does it validate against XSD?
No. This validator checks XML syntax and well-formedness only.
Is my XML uploaded?
No. XML validation runs in your browser.