DTD Generator from XML

Generate DTD schemas from XML documents instantly with this free online tool.

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About This Tool

This DTD Generator from XML is a powerful online tool that analyzes any XML document and extracts its Document Type Definition (DTD) schema. Simply paste your XML code or upload an XML file, and the tool will parse the structure to generate a complete DTD including element declarations, attribute lists, and entity definitions. Perfect for web developers, XML authors, and documentation teams who need to create DTDs for validation or documentation purposes.

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How to Use

Paste your XML code into the text area OR drag and drop an XML file into the upload zone.
Click the 'Generate DTD' button to process your XML.
View the generated DTD schema in the results section.
Use the copy button to copy the DTD to clipboard or download it as a .dtd file.

Frequently Asked Questions

Find Quick Answers

What is a DTD and why would I need one?

A DTD (Document Type Definition) defines the structure and legal elements of an XML document. It's used for validation to ensure XML documents follow specific rules and standards.

Does this tool support all XML features?

The tool extracts basic DTD components including elements, attributes, and simple content models. For complex XML schemas with namespaces or advanced constraints, manual refinement may be needed.

Can I generate DTD from large XML files?

Yes, the tool handles files up to 10MB efficiently. For optimal performance with very large files, consider using the text input method instead of file upload.

Is my XML data secure?

All processing happens entirely in your browser - no data is sent to any server. Your XML content remains completely private and secure.

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