PCauthorities.com presents…
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
T06 - Extension Details
Date Added: January 01, 1970
File Extension:  .T06
Description 1: File extension .T06 is associated with TaxCut 2006 Tax Return. It is used for tax year 2006 tax returns. The US tax preparation application TaxCut 2006 was used to create such files. Users fill in the numeric values and fields in the tax form included in the file. Only the TaxCut version that created the return can open the TaxCut returns.
File Type:   Data file
Mode: ASCII
Program(s) to Open:  Mac and Windows: H&R Block TaxCut 2006
Common:
Extension: