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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
PC1 - Extension Details
Date Added: September 09, 2008
File Extension:  .PC1
Description 1: Degas Elite uses the .PC1 extension. The PC1 format refers to a graphic image format. It is an Atari ST systems image editor that is saved using standard formatting of 16 colors and 320x200 pixels. People can open PC1 files directly on any Atari systems that have Degas Elite. The .PI1 file extension can also be used to open Degas Elite 1 files.
File Type:   Raster Image file
Mode: Binary
Program(s) to Open:  Windows: LoginPole Konvertor, XnView Macintosh: Lemkesoft GraphicConverter, XnView
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