Opening a DTN File

The DTN file type is primarily associated with D&D Beyond.

DTN	File extension: DTN
	File type:	structured data file

What is a DTN file

DTN files mostly belong to D&D Beyond. DTN files are used in different fields, and their contents depend on the software that created them.

DnD5e Data File: These files store game data in a JSON structure and are used with tools like the D&D Beyond Character Sheet Manager or Foundry VTT. For more details, visit D&D Beyond.
Construction Tender File: In the construction field, particularly in Austria, a DTN file holds tender information. It is handled by software such as ABK-BauData and works with systems like DataCAD.
Music Notation File: Some DTN files contain data for musical scores. They are used by desktop scorewriters such as Dorico and are related to notation tools like Sibelius.

FilExt.com tips: Each DTN file may have a unique internal structure. For the DnD5e case, the file is in JSON format and this makes it easier to inspect with a text editor. For the other uses, the file format is proprietary, so you need the specific software to open and view the content.

How to open DTN files

You need a suitable software like D&D Beyond to open a DTN file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your DTN file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a DTN file directly in the browser:. Just drag the file onto this browser window and drop it.

Online DTN Text Viewer

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Online File Viewer

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Programs that open and convert DTN files:

D&D Beyond
See the previous paragraphs to learn more about the main application. DTN files are often referred to as D&D Beyond data files because this type of file is primarily created or used by this software.
TunnelCAD (Import/Export File) by IQSoft
TunnelCAD is a tunneling volume calculation program. The DTN file is used to export section data to import to another project of TunnelCAD. This file format is classified as CAD/CAM.

Technical Data for DTN File Extension

File classification:

Data

Related files:

dnd, sib, mscz, dnt, zip, knd, ndt, export, json, xml, dwg, dat

a dtn structured data file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with DTN files

Associate the DTN file extension with the correct application.
Update your software that should actually open structured data files. Because only the current version supports the latest DTN file format. Search, therefore, e.g. on the manufacturer website after an available D&D Beyond update.
To make sure that your DTN file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .DTN file online - secure, fast, and no downloads needed.