A Vast Network of File Extensions

.BK2

Windows Indexing Service Data File

.BKF

NTBackup Settings File

.BKS

Backup Script

.BMP

Bitmap Image

.CXX

C++ Source File

.DAT

Generic Data File

.DBF

Database File

.DBX

Outlook Express Folder

.DD

Disk Duplicate File

.DEB

Debian Software Package

DISK IMAGE

Generic Disk Image

.DMG

Apple Disk Image

.DOC

Word Document (Legacy)

.DOCX

Microsoft Word Open XML

.DRMX

Drumlin Secure File

.DRMZ

Drumlin Secure PDF

.DWG

AutoCAD Drawing

.DXL

Lotus Domino XML

.E01

EnCase Evidence File

.EDB

Exchange Database

.ELF

Executable & Linkable

.EML

Email Message

.EMLX

Apple Mail Message

.EPUB

Digital Publication

.ESEDB

Jet Blue Database

.EXE

Windows Executable

.FLV

Flash Video File

.GIF

Graphical Interchange Format

.HDMP

Windows Heap Dump

.ICO

Windows Icon File

.ICS

iCalendar File

.IIF

Intuit Interchange

.IMA

Floppy Disk Image

.JNLP

Java Network Launch

.JPG

JPEG Image File

.KTH

Keynote Theme File

.LA

Libtool Archive File

.LDF

Log Database File

.LDIF

LDAP Data Interchange

.LEF

Logical evidence file

.LNK

Windows File Shortcut

.MAB

Mozilla Address Book

.MBOX

Email Mailbox

.MDB

Microsoft Database

.MDF

SQL Master Database

.MHTML

MIME HTML File

.MP4

MPEG-4 Video

.MSF

Mail Summary File

.MSG

Outlook Message

.MSI

Microsoft Installer

.NBK

SMART Notebook NBK File

.NK2

Outlook Auto-Complete

.NSF

Lotus Notes Database

.NST

Outlook Storage File

.OAB

Offline Address Book

.ODT

OpenDocument Text

.OLK

Outlook Address Book

.OLM

Outlook for Mac

.OST

Offline Storage Table

.OTM

Outlook Macro File

.PAB

Personal Address Book

.PDF

Portable Document Format

.PFC

Personal Filing Cabinet

.PNG

Portable Network Graphic

.PPF

Pathtrace Part Format

.PPT

PowerPoint (Legacy)

.PSD

Adobe Photoshop

.PST

Outlook Data File

.QBO

QuickBooks Online

.QDF

Quicken Data File

.QFX

Quicken Financial Ex.

.QRC

Qt Resource File

.QTM

QuickTime Movie

.RAR

WinRAR Compressed

.RBF

Retrospect Backup

.ROD

Actuate Report Object

.SQLITE

SQLite Database

.SRT

SubRip Subtitle

.SWF

Adobe Flash file

.TBB

The Bat! Mailbox

.TCP

Tally Compiled Program File

.UUE

Unix to Unix Encoding

.VBK

Veeam Backup File

.VDI

Virtual Disk Image

.VHD

Virtual Hard Disk

.VMDK

Virtual Machine Disk

.XLS

Excel 97-2003

.XLW

Excel Workspace

.XPS

XML Paper Spec.

.YRCBCK

Yahoo! Messenger Backup

.ZDB

ZixMail Database

.ZDCT

Adobe Localization files

.ZIP

Compressed Archive