XML Validator

Validate XML syntax and pinpoint errors with clear location hints.

Input data is processed in your browser
Data is never sent to a server

Tool

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What is XML Validator?

XML Validator checks whether your XML text is well-formed. When there is an error, it shows the error message and highlights the approximate location. When the XML is valid, it displays structural information such as the number of elements, attributes, and maximum nesting depth. Useful for debugging API responses and configuration files.

How to Use

  1. Paste your XML into the input field.
  2. Click "Validate" or enable auto-validate to check in real time.
  3. If the XML is invalid, the error message and approximate location are shown.
  4. If the XML is valid, structural stats such as element count and max depth are displayed.

FAQ

How is this different from XML Formatter?

XML Formatter focuses on pretty-printing and minifying. XML Validator focuses on syntax checking, error location, and structural statistics.

What kinds of errors can it detect?

It detects general well-formedness errors reported by the browser's XML parser, such as unclosed tags, missing attribute quotes, and invalid characters.

Does it validate against a DTD or XSD schema?

No. This tool only checks whether the XML is well-formed. It does not perform DTD or XSD schema validation.

Is my data sent to a server?

No. All processing happens in your browser using the built-in DOMParser.