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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
UB - Extension Details
Date Added: January 01, 1970
File Extension:  .UB
Description 1: Unsigned Byte Audio files bear the file extension .UB. It refers to the uncompressed audio file format that Amiga and Q40 systems employ. The files contain raw, unsigned onebyte or 8bit audio data that are encoded using Pulse Code Modulation or PCM, the standard method for encoding analog audio signals in the digital format.
File Type:   Audio file
Mode: Binary
Program(s) to Open:  Windows: QL Sampled Sound System, Apple QuickTime Player, SoX Sound eXchange Macintosh: Waveform Software SoX Wrap Unix: SoX Sound eXchange
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