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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
JNG - Extension Details
Date Added: January 01, 1970
File Extension:  .JNG
Description 1: .JNG file extension is linked with JPEG Network Graphic. It is the image file format associated with .PNG format but is utilizes lossy compression similar to that of the standard .JPG files. It is developed as a subformat for .MNG objects; however, it can be utilized as a standalone raster image format. .JNG files may incorporate an optional alpha channel for transparency. Ancillary data chunks may also be included in these files.
File Type:   Bitmap Image File
Mode: Binary
Program(s) to Open:  Windows: Acoll Smart Converter, IrfanView, XnView, fCoder Image Converter Plus; Mac: XnView
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