QuarkXpress auxiliary dictionary file
File type: Text file
Files with qdt extension are used by QuarkXPress program. They include some data in text file format.
Found 4 different file type records with the same qdt filename suffix.
File type category:
Text file
Date updated: November 7, 2024
The qdt file extension is associated with QuarkXpress. The qdt files are auxiliary dictionary files, text files, containing words in alphabetical order, which can be edited by any text editor.
Example: dictonary.qdt
Use Microsoft Notepad to open files with qdt extension.
Files with qdt extension are not convertable.
Software applications that can open qdt files:
Microsoft Windows
Microsoft Windows NotePad
Apple macOS / Mac OS X
Linux/Unix
Multiplatform
Software applications that can edit qdt files:
Microsoft Windows
Microsoft Windows NotePad
Apple macOS / Mac OS X
Linux/Unix
Multiplatform
Software capable of saving qdt files:
Microsoft Windows
Microsoft Windows NotePad
Apple macOS / Mac OS X
Linux/Unix
Multiplatform
Software apps that import qdt files:
Microsoft Windows
Apple macOS / Mac OS X
Software apps that export qdt files:
Microsoft Windows
Apple macOS / Mac OS X
Software applications that handle other tasks involving qdt files:
Microsoft Windows
Apple macOS / Mac OS X
File type category:
Various data file
Date updated: September 27, 2026
Questionmark Designer is an authoring tool from Questionmark for creating and editing assessments. A QDT file contains the saved test data produced by the tool, including the content and structure of a test.
The file is used within the Questionmark Perception assessment software authoring and assessment workflow. It is a proprietary data file rather than a general-purpose document or interchange format.
Open the file on Microsoft Windows with Questionmark Perception and its Questionmark Designer authoring tools. Use the software's Open command to load the file.
A general text editor or office application cannot reliably interpret a QDT file. If Questionmark software is not installed, contact the person or organisation that created the test for the appropriate software.
Use Questionmark Perception or Questionmark Designer to open the test and use any export or publishing options provided by that installation.
Because QDT is a proprietary authoring format, exporting it may not preserve every test feature or setting.
Software applications that can open qdt files:
Microsoft Windows
Questionmark Perception
Software apps that create qdt files:
Microsoft Windows
Questionmark Perception
Software applications that handle other tasks involving qdt files:
Microsoft Windows
Questionmark Perception
File type category:
Accounting, financial and tax file
Date updated: November 16, 2017
The qdt file extension is associated with the Quickbooks, line of business accounting software developed and marketed by Intuit.
The .qdt files contain financial data saved in some earlier version of QuickBooks.
Use QuickBooks to work with *.qdt files.
Software applications that can open qdt files:
Microsoft Windows
Apple macOS / Mac OS X
Software applications that handle other tasks involving qdt files:
Microsoft Windows
Apple macOS / Mac OS X
File type category:
Accounting, financial and tax file
Date updated: September 22, 2017
Record marked as obsolete and not updated for a long time.
The qdt file extension is associated with Quicken, a personal finance management tool developed by Intuit, Inc, which is available in both Windows and Mac Versions.
The qdt files were the main files used by Quicken Win version 1 to 4 and Quicken DOS version 3 to 8, probably to store some sort of financial data.
Use Quicken to work with *.qdt files.
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