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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
Z02 - Extension Details
Date Added: March 12, 2008
File Extension:  .Z02
Description 1: A .Z02 file is the second part of the WinZipcreated split archive. It utilizes the same compression as the standard or typical .ZIP file. However, .Z02 files need to be decompressed together with other split archives related to it. .Z01 files come before .Z02 files while .Z03 and other files come after. All the split archives are required to successfully decompress a split archive.
File Type:   Compressed file
Mode: Binary
Program(s) to Open:  Windows: WinZip 12 Pro
Common:
Extension: