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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
ZDS - Extension Details
Date Added: January 01, 1970
File Extension:  .ZDS
Description 1: File extension .ZDS is associated with a game saved by GZDoom or ZDoom, referring to the original Doom 3D firstperson shooters ported versions. ZDS files make it possible to save and load gameplays at later times. To display the save files name, hit F1 while it is highlighted in the Load or Save menu. With ZDoom, users are able to "mod the game by creating objects and custom maps, changing the gameplay and introducing other effects. GZDoom is a lot like ZDoom, but with the added feature of having OpenGL support.
File Type:   Game file
Mode: Binary
Program(s) to Open:  Windows: GZDoom, ZDoom
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