Question 1

What does XML validation check?

Accepted Answer

XML validation checks if your document is well-formed, meaning it follows XML syntax rules: proper tag nesting, matching opening and closing tags, correct attribute formatting, and valid character encoding.

Question 2

What is well-formed XML?

Accepted Answer

Well-formed XML follows all XML syntax rules: it has a single root element, all tags are properly closed and nested, attribute values are quoted, and special characters are properly escaped.

Question 3

How do I fix XML validation errors?

Accepted Answer

Our validator provides detailed error messages with line numbers. Common fixes include closing unclosed tags, properly nesting elements, quoting attribute values, and escaping special characters like <, >, and &.

Question 4

Can I validate XML against an XSD schema?

Accepted Answer

This tool validates XML for well-formedness. For schema validation against XSD, first generate your XSD using our XML to XSD converter, then use schema validation in your programming environment.

Question 5

Is XML validation case-sensitive?

Accepted Answer

Yes, XML is case-sensitive. Tag names must match exactly, so and would be considered mismatched tags and cause a validation error.

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