DTD Generator

Generates a DTD from an XML sample to validate structure and document XML schemas. It is aimed at developers, data architects, and integration engineers who need a practical, readable DTD without manual hand coding. The tool ingests a well formed XML sample and outputs a DOCTYPE internal subset that reflects element hierarchy, required attributes, and basic type constraints. The produced DTD supports documentation, migration work, and quick validation references.
The generator relies on deterministic parsing and frequency-based inference to decide optional versus mandatory children and to propose attribute lists and defaults where evidence exists. Advanced options permit namespace stripping, attribute value enumerations, and optional external subset generation.
Users can copy the DTD text, export it to a file, or integrate the result into a build or validation workflow. The approach emphasizes readability and practical schema representation rather than exhaustive typing.