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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
B5T - Extension Details
Date Added: January 01, 1970
File Extension:  .B5T
Description 1: .B5T file extension is linked with BlindWrite Image File. BlindWrite is an application that extracts the features of DVD/CD media to your hard disk drive to create a workable backup media. With the use of ISOBuster, these backup files can be interpreted directly. .B5T files carry the disk descriptor information that has been created by BlinWrite. These files are usually saved with matching .B5I files, but they are quite small files compared to .B5I files.
File Type:   Disk Image [ISO] Binary File
Mode: Binary
Program(s) to Open:  Windows: EZB Systems Ultra ISO, ISOBuster, VSOSoftware BlindWrite
Common:
Extension: