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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
PC3 - Extension Details
Date Added: January 01, 1970
File Extension:  .PC3
Description 1: File extension .PC3 is associated with the Degas Elite High Res Image File. It has an image format that the Atari ST platform image editor known as Degas Elite uses. PC3 files feature 640x400 pixels of image resolution and support two colors. Open directly on Atari systems with Degas Elite program software. PI3 is the other file extension used on Degas Elite 3 files.
File Type:   Raster Image file
Mode: Binary
Program(s) to Open:  Windows: Logipole Konvertor, XnView Macintosh: Lemkesoft GraphicConverter, XnView
Common:
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