DTD File

What are DTD files and how to open them

Are you having problems opening a DTD file or just wondering what they contain? We explain what these files are used for and show you software that we know can open or otherwise handle your files.

What is a DTD file?

DTD files have multiple uses, and Document Type Definition is one of them. Read more about the other uses further down the page.

Document Type Definition 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 or application.

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

We have identified four DTD openers that are compatible with this specific type of DTD file.

Programs that open Document Type Definition files

Last updated: December 27, 2022

More file formats using the DTD extension

Through our research of DTD files, we know that the following formats exist. However, we have not yet analyzed them in detail.

Various apps that use files with this extension

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.

Help us help others

File.org helps thousands of users every day, and we would love to hear from you if you have additional information about DTD file formats, example files, or compatible programs. Please use the links below or email us at submit@file.org to discuss further.