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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
OEB - Extension Details
Date Added: January 01, 1970
File Extension:  .OEB
Description 1: The .OEB extension is linked to an Outlook Express email database backup that Outlook Express Backup Wizard created. This type of file generates a full backup of the entire Outlook Express files from identities to email messages to attachments to accounts to message rules to address books to signatures and blocked senders lists.
File Type:   Backup file
Mode: Binary
Program(s) to Open:  Windows: QSX Software Outlook Express Backup Wizard
Common:
Extension: