ESC

XML XSD Schema Validator

XML XSD Schema Validator is a free online tool used to validate an XML document against an XSD schema and identify structure or schema errors instantly.

What Is XML Schema Validation?

XML schema validation checks whether an XML document follows the rules defined in an XSD (XML Schema Definition) file. An XSD specifies which elements and attributes are allowed, their data types, required fields, and how different parts of an XML document should be structured.

How to Validate XML Against an XSD

  • Validating an XML document against an XSD schema with this online tool only requires the XML and its corresponding schema.

  • Enter or paste the XML document into the XML Document field. 

  • Enter the corresponding XSD schema into the XSD Schema field. The schema defines the structure and rules that the XML document must follow.

  • Select Validate to check the XML against the provided XSD schema. The tool compares the XML structure and values with the rules defined in the schema.

  • The validation result shows whether the XML complies with the XSD. If validation fails, the tool displays relevant errors to help identify what needs to be corrected.

  • The result area also provides useful information such as XML root element, XML size, XSD size validation status and validation errors.

XML vs XSD: What Is the Difference?

XML and XSD serve different purposes.

XML (Extensible Markup Language) stores and organizes structured data using elements and attributes. It describes the actual information being exchanged or stored.

XSD (XML Schema Definition) defines the rules that an XML document must follow. It can specify permitted elements, attributes, data types, required fields, and relationships between elements.

XML XSD Validation Example

This XML can pass validation:

<user>

  <name>John</name>

  <age>30</age>

</user>

But this XML may fail if the XSD defines age as an integer:

<user>

  <name>John</name>

  <age>thirty</age>

</user>

The XML can still be well-formed, but its value does not satisfy the data type specified by the XSD schema and its validation failed.


Frequently Asked Questions

What is an XML XSD validator? add
An XML XSD validator checks an XML document against an XSD schema. It determines whether the XML follows the elements, attributes, data types, and structural rules defined by the schema.
How can XML be validated against an XSD schema? add
Paste the XML document and its corresponding XSD schema into the validator, then select Validate. The tool checks the XML against the schema and displays the validation status and errors.
What is the difference between XML and XSD? add
XML is used to store and organize structured data, while XSD defines the rules and structure that the XML document must follow. XSD can specify elements, attributes, data types, and required fields.
Can well-formed XML fail XSD validation? add
Yes. Well-formed XML follows basic XML syntax rules, such as properly nested and closed elements. XSD validation applies additional rules defined by the schema, so well-formed XML can still fail schema validation.