XML Validator
Check if XML is well-formed and get error details.
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What is an XML Validator?
An XML validator checks whether your XML document is well-formed — meaning it follows XML syntax rules with properly nested tags, closed elements, and valid structure.
Use it before parsing XML in applications, publishing feeds, or sharing configuration files.
How to Use This Tool
Paste your XML into the input textarea.
Click Validate XML to check well-formedness.
Review the success or error message.
Fix any reported issues and re-validate.
Benefits of XML Validation
- Catch malformed XML before it breaks parsers
- Debug RSS, SOAP, and config files quickly
- Verify exports from databases and APIs
- Get parser error details to fix issues
- No server upload — validate privately
Frequently Asked Questions
What is well-formed XML?
Well-formed XML has a single root element, properly nested tags, closed elements, and correctly quoted attributes.
Does this validate against an XML Schema?
This tool checks well-formedness only, not compliance with XSD or DTD schemas.
What are common XML validation errors?
Typical issues include unclosed tags, mismatched open/close names, multiple root elements, and unescaped special characters in text nodes.
Is this tool free?
Yes. This tool is completely free to use with no sign-up, no limits, and no hidden fees.
Does my data leave my browser?
No. All processing happens entirely in your browser using client-side JavaScript. Your data is never sent to a server or stored anywhere.
Does this tool work on mobile?
Yes. PeasyDo tools work in modern mobile browsers on iOS and Android. For file tools, use a browser that supports file uploads and downloads.
Do I need to install software?
No. Everything runs in your browser — no desktop app, plugin, or account required.
Feedback & report a problem
Found a bug or have a suggestion? Let us know — it helps us improve this tool.
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