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Details of the .dtd file extension

The table below provides useful information about the .dtd file extension. It answers questions such as:

  • What is the .dtd file?
  • What program do I need to open a .dtd file?
  • How can the .dtd file be opened, edited or printed?
  • Where can I find the specifications for .dtd?
  • Which MIME-type is associated with the .dtd extension?
  • How can I convert .dtd files to another format?
  • What are other, similar filename extensions to .dtd?

We hope you find this page helpful and a valuable resource!

1 extension(s) and 0 alias(es) found in database

.dtd file extension details

Document Type Definition

Document Type Definition .dtd file icon
DTD file is a Document Type Definition. Document Type Definition (DTD) is one of several SGML and XML schema languages, and is also the term used to describe a document or portion thereof that is authored in the DTD language.
Category: Document files
Application: Notepad
Mime-type: application/xml-dtd
Magic number: -
Magic string: -
DTD aliases:
DTD related links:
DTD related extensions:
Hypertext Markup Language Document

Plain Text File

Extensible Markup Language File

Standard Generalized Markup Language Document

SGML/XML External Entity

Unicode Text File

Other types of files may also use the .dtd file extension.

.dtd file extension error

The .dtd file extension is often given incorrectly!

According to the searches on our site, these misspellings were the most common in the past year:

dd, std, dt, tdd, dtf, dtc, drd, wtd, dts, ftd, dtr, dfd, td, etd, dtw

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

OMA Download Descriptor
C64 Doodle Image
StarOffice DrawingTemplate
Proben1 Dataset
Tables Direct Template
Symantec Q&A Database Data
Weresc CADE Drawing
PL Designer Document
GTA 4 Texture Data
DTS Encoded Audio File
open .dtd file

Can't open a .dtd file?

When you double-click a file to open it, Windows examines the filename extension. If Windows recognizes the filename extension, it opens the file in the program that is associated with that filename extension. When Windows does not recognize a filename extension, you receive the following message:

Windows cannot open this file:


To open this file, Windows needs to know what program you want to use to open it...

If you don't know how to set the .dtd file association, check the FAQ.

.dtd file extension

Can I change the extension of files?

Changing the filename extension of a file is not a good idea. When you change a file's extension, you change the way programs on your computer read the file. The problem is, changing the file extension does not change the file format.

If you have helpful information about the .dtd file extension, write to us!

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