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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
PBP - Extension Details
Date Added: February 11, 2008
File Extension:  .PBP
Description 1: A .PBP file refers to a firmware update image file that is used to update Sony Playstation Portable (PSP) firmware. Game demos are installed on PSPs with the help of PBP files, although they also come in handy when installing homebrew games and applications. PBP files are sometimes even used to hack into or modify PSPs and typically bear the EBOOT.PBP filename.
File Type:   Game file
Mode: Binary
Program(s) to Open:  Windows: PBP Unpacker, PSP Brew
Common:
Extension: