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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
DRV - Extension Details
Date Added: January 01, 1970
File Extension:  .DRV
Description 1: .DRV file extension is linked with Device Driver. A device driver is an application which allows higherlevel computer applications to interact with a peripheral or hardware device. It contains commands which enable computertohardware communication. It is advisable to refrain from opening any unknown .DRV file since it may possibly be infected with virus. .DRV files should not be manually opened.
File Type:   System File
Mode: Binary
Program(s) to Open:  Windows: Installed with hardware installation software, should not be manually opened or altered
Common:
Extension: