Opening a DEK File

The DEK file type is primarily associated with MTGO.

DEK	File extension: DEK
	File type:	Data file

What is a DEK file?

DEK files mostly belong to MTGO. This file extension DEK may refer to various specialized data files. Its content varies by context. Below are the main uses:

Gaming Deck Files: These files contain deck configurations for digital card games such as Magic: The Gathering. They are often stored in an XML format. Programs like MTGO or the Cardhoarder Deck Editor can open and manage these decks.
Pure Data Externals: Some DEK files are ZIP-compressed packages holding external libraries for the Pure Data environment. To use them, extract the file with a ZIP tool and load the contents within Pure Data. More details are available at the GEM website.
Tax Forms: In Poland, a DEK file can be a tax declaration form from the Przyjazne Deklaracje system. For more information, visit Przyjazne Deklaracje.

FilExt.com usage tip: Check the file's internal structure. If it appears as XML text, a text editor may suffice. If the file opens as a ZIP archive, use a standard decompression tool.

How to open a DEK file

You need a suitable software like MTGO to open a DEK 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 DEK file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a DEK file directly in the browser:. Just drag the file onto this browser window and drop it.

Online DEK Text Viewer

Choose your .dek file to analyze

or drag and drop it here

Online File Viewer

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Programs that open and convert DEK files:

MTGO
See the previous paragraphs to learn more about the main application. DEK files are often referred to as MTGO data files because this type of file is primarily created or used by this software.
Memorize-It (Multimedia Flashcard Deck) by Side-Eight Software
Memorize·It is a multimedia flashcard application that allows you to create your own decks of flashcards incorporating text, sound, pictures, and drawings. Cards can be moved between decks or copied to build new decks. Interactive quizzing with Memorize·It automatically keeps track of the hardest cards. The Mime types used with this association are: application/memorizeit.

Technical Data for DEK File Extension

File classification:

Data

Related files:

mws, mtgo, pd, tax, dex, xml, asf, zip

Mime type:

application/memorizeit

The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and file extension information submitted by users.

ProgramID: EKFile
EXEFile: C:\Varian\CARYWI~1\EnzymeKinetics.exe

a dek Data file is a special file format and should only be edited and saved with the appropriate software.

How to solve problems with DEK files

Associate the DEK file extension with the correct application.
Update your software that should actually open data files. Because only the current version supports the latest DEK file format. Search, therefore, e.g. on the manufacturer website after an available MTGO update.
To make sure that your DEK file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
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