Extract text from DTD files
To convert your DTD file to another format, you need XMLSpy or other Developer software.
To convert other file formats to the "XML Validation Schema" file type, you need software like XMLSpy or a similar tool.
The .DTD file extension primarily identifies a Document Type Definition, a legacy schema language used to define the legal building blocks of an XML document. It specifies elements, attributes, and the hierarchical structure data must adhere to. While fundamental to early XML adoption, DTDs have significant technical limitations: they do not support XML Namespaces, lack strong data typing (treating most data as simple strings), and use non-XML syntax that can be difficult to parse compared to modern alternatives like XSD. Consequently, developers frequently need to convert .DTD files to XSD (XML Schema Definition) for robust validation, or JSON Schema for integration with modern RESTful APIs.
However, a significant number of .DTD files (approx. 25%) are actually proprietary 2D CAD drawings created by TechSoft 2D Design, a software widely used in UK educational institutions for Computer-Aided Design. These binary files are completely incompatible with XML tools and often trap student coursework or legacy designs in a format that standard industry tools like AutoCAD cannot open natively. To access these drawings outside the classroom or in professional environments, users must convert them to interoperable vector formats like DXF, DWG, or PDF.
Convert.Guru analyzes your DTD file, detects the exact format, and lets you read the text inside.
Users also converted XSD, XML, ZIP, 3D, SGM, 25, PDF, DOCX, LZH, ODT, 24, JPG and 2D files.
If you want to convert DTD file to XSD, XML, JSON, DXF, JS, TS, PY, JAVA, CPP, C, CS or PHP, you can use XMLSpy or similar software from the "XML Structure Validation" category. In the File menu, look for Save As… or Export….
To convert SH, PY, KT, PS1, SWIFT, LUA, PL, JAVA, SCALA, JS, VBS or TS files to DTD, try XMLSpy or another comparable tool in the "XML Structure Validation" category.
The history of Convert.Guru began over 25 years ago in California with Tom Simondi’s file-format database. A former contributor to Space Shuttle development and a software pioneer of the 1980s, Simondi established a trusted resource for file type analysis that was even referenced by Microsoft Windows XP. Today, we use modern technology to process and convert thousands of file formats while continually improving our DTD converter.