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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:
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8BI - Extension Details
Date Added: January 04, 2009
File Extension:  .8BI
Description 1: File extension .8BI is associated with a Photoshop Plugin. .8BI files put in extra features like additional format support or filters to the Photoshop application. These files need to be stored in the Plugins Folder under the Photoshop application folder. Examples of .8BI plugins are the Camera Raw.8bi plugin that lets Photoshop read multiple RAW image formats, and the ICOFormat.8bi plugin that facilitates Photoshops opening and saving Windows Icon (.ICO) files.
File Type:   Plugin file
Mode: ASCII
Program(s) to Open:  Windows: Adobe Photoshop, Photoshop Elements, or PhotoDeluxe Corel Paint Shop Pro 9 or later Macintosh: Adobe Photoshop, Photoshop Elements, or PhotoDeluxe
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