DTD File - opening and understanding

Did your computer fail to open a DTD file? We explain what they are used for and recommend software that we know can open or otherwise handle your .DTD files.

What is a DTD file?

DTD is an acronym for Document Type Definition. Files that contain the .dtd file extension are text files that specify certain elements that are used in an SGML, HTML, XHTML or XML document.

The information that is contained in the DTD files is used to define the structure of given XML data. This data may define the order and nesting of a document's elements and attributes, which are referenced within a web page. The DTD file allows a computer that is receiving XML from another computer to agree on the structure of the XML data that is being transmitted, ensuring uniformity.

The DTD file can also be used to determine whether or not a file represents a valid document.

How to open DTD files

You will need a program compatible with the specific file you are trying to open, as different programs may use files with file extension DTD for different purposes.

While we have not verified the apps ourselves yet, our users have suggested 10 different DTD openers which you will find listed below.

Suggest another file format using extension DTD

While we know of one file format using the .DTD file extension, there may be more. It is widespread that different programs use files with the same file extension for very different types of data. Please let us know if you are aware of a different kind of .DTD file.

Various viewers for this file format

These apps are known to open certain types of DTD files. Remember, different programs may use DTD files for different purposes, so you may need to try out a few of them to be able to open your specific file.

Stuffit ExpanderStuffit ExpanderUser submitted
Any Video Converter ProfessionalAny Video Converter ProfessionalUser submitted
Oxygen XML EditorOxygen XML EditorUser submitted
Microsoft Visual Studio CodeMicrosoft Visual Studio CodeUser submitted
Flash Movie PlayerFlash Movie PlayerUser submitted
Design Tools - 2D DesignDesign Tools - 2D DesignUser submitted
progeCAD ProfessionalprogeCAD ProfessionalUser submitted
XML Copy EditorXML Copy EditorUser submitted
progeCAD Professional EnglishprogeCAD Professional EnglishUser submitted
Liquid XML StudioLiquid XML StudioUser submitted
We have not verified any software that we know for certain will work with DTD-files on Mac. If you know one, please use the 'Suggest a program' link below and tell us about it!
We have not verified any web services that we know for certain will work with DTD-files. If you know one, please use the 'Suggest a program' link below and tell us about it!