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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
OGG - Extension Details
Date Added: January 01, 1970
File Extension:  .OGG
Description 1: OGG is the file extension linked to Ogg Vorbis Compressed Media files, a new format of audio compression. The compressed files usually contain video, text and audio. In terms of storage and digital music playing, Ogg Vorbis ranks right up there with MP3, AAC, VQF and other popular digital audio formats. But unlike the others, this one is unpatented, open and free. It offers better sound quality than most MP3 files of the same size and is supported by most audio players and a few portable music players.
File Type:   Audio/Music File
Mode: Binary
Program(s) to Open:  Windows: Microsoft Windows Media Player with DirectShow filter, RealNetworks RealPlayer with Xiph OGG plugin, The Core Media Player with DirectShow filter, RadLight Media Player with DirectShow filter Macintosh: Whamb Digital Audio Player, RealNetworks RealPlayer with Xiph Ogg plugin, VideoLAN VLC Media Player, NoUTurn Ogg Drop, Roxio Toast Unix: Zinf, Amarok, VideoLAN VLC Media Player, RealNetworks RealPlayer Pocket PC: GreenSoftware GSPlayer
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