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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
J2C - Extension Details
Date Added: January 01, 1970
File Extension:  .J2C
Description 1: .J2C file extension is linked with JPEG 2000 Code Stream. It is the compressed bitmap image file which uses JPEG 2000 compression. It is comparable to .JPG but it uses modern compression algorithm. .J2C files can be viewed by various programs that support the standard JPEG 2000 [.JP2] files. JPEG 2000 code stream files also utilized .JPC file extension.
File Type:   Bitmap Image File
Mode: Binary
Program(s) to Open:  Windows: Adobe Photoshop with JPEG 2000 plugin, Corel Paint Shop Pro, Dimin Viewer n5, ImageMagick, IvanView; Mac: Adobe Photoshop with JPEG 2000 plugin, GraphicConverter, ImageMagick, ToyViewer; Unix: ImageMagick
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