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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
JSON - Extension Details
Date Added: May 01, 2009
File Extension:  .JSON
Description 1: .JSON file extension is linked with JavaScript Object Notation File. It carried the data interchange format that is utilized for representing objects and simple data structures. .JSON files are saved in lightweight, humanreadable, textbased format. Originally, it was based on a JavaScript subset, however, it is considered as languageindependent. .JSON files are regularly utilized in Ajax Web application programming. Other applications utilize this file as an .XML alternative.
Description 2: .JSON file extension is linked with Google Gears Manifest File. It is the file extension utilized by Manifest File. Google Gears is an opensource project which enables your web browser to have more powerful web applications and new features. .JSON file extension and Google Gears are owned and developed by Google Inc.
Description 3: .JSON file extension is linked with Firefox Bookmark Backup File. This is the file extension for the bookmark backup file utilized by Firefox a free web browser which comes from the Mozilla Application Suite. As of June 2008, Firefox had 19.03% of the recorded usage share of web browsers, which makes it secondmost popular web browser in the entire world. Its key features are: uses free Gecko engine, tabbed browsing, spellchecker, incremental find, download manager, live bookmarking and integrated search system.
File Type:   Backup File
Mode: Binary
Program(s) to Open:  Windows, Mac & Linux: Mozilla Firefox
Common:
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