Validating an XML Document against a DTD

How to validate an XML document against a DTD

XMLBlueprint can validate any XML Document against any valid DTD:

Open your XML Document in the XML Editor.

Click XML > Validate.

The Output Window is automatically displayed to show any errors in the XML Document. Click on the error message to jump to the position where the error occurred.

Note: To validate an XML Document you need to associate your XML Document with a DTD, Relax NG Schema, or XML Schema.

How to associate an XML Document with a DTD

To validate an XML Document against a DTD (Document Type Declaration), you need to associate your XML Document with the DTD, for example:

<?xml version="1.0" encoding="utf-8"?>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

</html>

This tells XMLBlueprint to validate the XML Document against DTD "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd". The 'PUBLIC' part is optional, this is also possible:

<?xml version="1.0" encoding="utf-8"?>

<!DOCTYPE html SYSTEM "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">

</html>