XML Syntax Validator

Check your XML documents for syntax errors, well-formedness compliance, and parsing exceptions instantly in your browser.

Input XML Document

<?xml version="1.0" encoding="UTF-8"?>
<note>
  <to>Tove</to>
  <from>Jani</from>
  <heading>Reminder</heading>
  <body>Don't forget me this weekend!    <script defer src="/js/second-menu.js?v=2"></script>
</body>
</note>

Validation Report

Ready

What is XML Syntax Validator?

An XML syntax validator checks whether an XML document is well-formed. It identifies structural issues such as unclosed elements, invalid nesting, and malformed attributes.

How to use this tool

Paste the XML document and run validation. Use the reported position to correct the first error, then validate again.

Useful notes

A well-formed document may still fail a separate schema rule. Use XSD validation when a specific schema is required.

Frequently Asked Questions (FAQ)

Yes. The values you enter are processed locally in your browser.