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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
TAB - Extension Details
Date Added: January 01, 1970
File Extension:  .TAB
Description 1: .TAB is a file extension tied to the Guitar Tablature File. It is attached to text files that contain guitar tabs as well as song lyrics. .TAB files generally refer to standard text files. The .TAB extension is used to distinguish such files from other files as it indicates that the files include guitar tabs.
Description 2: The .TAB file extension has to do with Tab Separated Data. Each TAB file has a table of data. Tabs are used to separate the columns found in files with the .TAB extension. Majority of spreadsheet application programs are able to import as well as format TAB files into cells.
File Type:   Data file
Mode: ASCII
Program(s) to Open:  Mac and Windows: Spreadsheet program like Microsoft Excel, can be opened with a text editor
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