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The File Extension Library

What is a file extension?

Short answer: it's the set of letters after the period (.) in the name of a file.

Long answer: File extensions signify the file format of a file. It tells the operating system (OS) how data was stored in the file. Not all OS, require a file extension though. For instance, this is optional in Unix, but is mandatory with MS-DOS and Windows systems.

In most file formats the file type is actually defined by the contents (first bytes, file structure), but extensions are used to define the application that is used for opening the file.

Below is a detailed database of thousands of file extensions our team has compiled for you. Feel free to browse!


Browse all Extensions:
ABCDEFGHIJKLMNOPQRSTUVWXYZ
VOK - Extension Details
Date Added: March 03, 2009
File Extension:  .VOK
Description 1: File extension .VOK is associated with the PDAbased vocabulary training program called PocketVok (Vocabulary File). VOK files contain a list of words that PocketVok recognizes. These files are used in learning words, building vocabulary, and learning foreign countries, their capitals, words and more. WinVok, PocketVoks Windows version, is also able to distinguish VOK files.
File Type:   Data file
Mode: ASCII
Program(s) to Open:  Windows: hfrmobile WinVok Pocket PC: hfrmobile PocketVok
Common:
Extension: