A daily updated filename extension database!

DEC file extension

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

  • What is the .dec file?
  • What program do I need to open a .dec file?
  • How can the .dec file be opened, edited or printed?
  • How can I convert .dec files to another format?

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

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

✅ VersaPro Declaration File

DEC file is a VersaPro Declaration File. VersaPro is an old family of PLC programming software. Declaration file is a summary of items in a folder, used by the PLC.
Application: VersaPro
Mime-type: application/octet-stream
Magic number: -
Magic string: -
Sample: -
DEC aliases:
DEC related links:
DEC related extensions:
VersaPro Compiled Local Logic Block

VersaPro PLC Compiled Block

VersaPro Smart Store Document

VersaPro Variable Declaration Table

VersaPro Variable View Table

VersaPro Reference View Table

✅ DEC DX Document

DX file is a DEC DX Document. DEC DX was a word processor application for MS-DOS.
DX format description not yet available
Category: Document files
Application: DEC DX
Mime-type: application/dec-dx
Magic number: -
Magic string: -
Sample: -
DX aliases:
dec, dxf
DX related links:
DX related extensions:
Microsoft Word AutoRecovery File

ClarisWorks Document

Data Interchange Format

Microsoft Word Document

Microsoft Word Document Template

Lotus Word Pro Document

Microsoft Word for Macintosh Document

Portable Document Format

Microsoft PowerPoint Presentation

Revisable-Form Text

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

🚫 The .dec file extension is often given incorrectly!

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

cec, d3c, dc, dce, ddc, de, ded, def, des, dev, dex, dfc, drc, dsc, dwc

Is it possible that the filename extension is misspelled?

We found the following similar file extensions in our database:

fastText Word Vectors Data
Idrisi Vector
ENVI Vector Template
Pictures by PC Drawing
Recogniform ICR Data File
Windows 3.1 Macro Recorder Data
Elasto Mania Replay
Epidata Data File
Emulex DWC Firmware Update
DriveCam Video Event

🔴 Can't open a .dec 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 .dec file association, check the FAQ.

🔴 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 .dec file extension, write to us!

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