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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
WGZ - Extension Details
Date Added: January 01, 1970
File Extension:  .WGZ
Description 1: File extension .WGZ refers to compressed archive files containing a small program or widget for Nokia S60based phones. S60 WRT (Web Runtime) represents a lightweight program framework enabling easy mobile Web applications creation. Such files may feature JavaScript, HTML and CSS files. The .WGZ files run through the WRT program software that comes included with the S60 phones. Given that compressed WGZ files use ZIP compression, expanding them is possible with the help of a ZIP decompression utility.
File Type:   Text file
Mode: ASCII
Program(s) to Open:  Windows: transfer to phone with Nokia PC Suite Macintosh: transfer to phone with Nokia Multimedia Transfer
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