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Common File Types

Common file extensions that are good to know, organized by file format.

Text Files
.DOCMicrosoft Word Document
.DOCXMicrosoft Word Open XML Document
.LOGLog File
.MSGOutlook Mail Message
.ODTOpenDocument Text Document
.PAGESPages Document
.RTFRich Text Format File
.TEXLaTeX Source Document
.TXTPlain Text File
.WPDWordPerfect Document
.WPSMicrosoft Works Word Processor Document
Data Files
.CSVComma Separated Values File
.DATData File
.GEDGEDCOM Genealogy Data File
.KEYKeynote Presentation
.KEYCHAINMac OS X Keychain File
.PPSPowerPoint Slide Show
.PPTPowerPoint Presentation
.PPTXPowerPoint Open XML Presentation
.SDFStandard Data File
.TARConsolidated Unix File Archive
.TAX2014TurboTax 2014 Tax Return
.TAX2015TurboTax 2015 Tax Return
.VCFvCard File
.XMLXML File
Audio Files
.AIFAudio Interchange File Format
.IFFInterchange File Format
.M3UMedia Playlist File
.M4AMPEG-4 Audio File
.MIDMIDI File
.MP3MP3 Audio File
.MPAMPEG-2 Audio File
.WAVWAVE Audio File
.WMAWindows Media Audio File
Video Files
.3G23GPP2 Multimedia File
.3GP3GPP Multimedia File
.ASFAdvanced Systems Format File
.AVIAudio Video Interleave File
.FLVAnimate Video File
.M4ViTunes Video File
.MOVApple QuickTime Movie
.MP4MPEG-4 Video File
.MPGMPEG Video File
.RMRealMedia File
.SRTSubRip Subtitle File
.SWFShockwave Flash Movie
.VOBDVD Video Object File
.WMVWindows Media Video File
3D Image Files
.3DMRhino 3D Model
.3DS3D Studio Scene
.MAX3ds Max Scene File
.OBJWavefront 3D Object File
Raster Image Files
.BMPBitmap Image File
.DDSDirectDraw Surface
.GIFGraphical Interchange Format File
.JPGJPEG Image
.PNGPortable Network Graphic
.PSDAdobe Photoshop Document
.PSPIMAGEPaintShop Pro Image
.TGATarga Graphic
.THMThumbnail Image File
.TIFTagged Image File
.TIFFTagged Image File Format
.YUVYUV Encoded Image File
Vector Image Files
.AIAdobe Illustrator File
.EPSEncapsulated PostScript File
.PSPostScript File
.SVGScalable Vector Graphics File
Page Layout Files
.INDDAdobe InDesign Document
.PCTPicture File
.PDFPortable Document Format File
Spreadsheet Files
.XLRWorks Spreadsheet
.XLSExcel Spreadsheet
.XLSXMicrosoft Excel Open XML Spreadsheet
Database Files
.ACCDBAccess 2007 Database File
.DBDatabase File
.DBFDatabase File
.MDBMicrosoft Access Database
.PDBProgram Database
.SQLStructured Query Language Data File
Executable Files
.APKAndroid Package File
.APPMac OS X Application
.BATDOS Batch File
.CGICommon Gateway Interface Script
.COMDOS Command File
.EXEWindows Executable File
.GADGETWindows Gadget
.JARJava Archive File
.WSFWindows Script File
Game Files
.DEMVideo Game Demo File
.GAMSaved Game File
.NESNintendo (NES) ROM File
.ROMN64 Game ROM File
.SAVSaved Game
CAD Files
.DWGAutoCAD Drawing Database File
.DXFDrawing Exchange Format File
GIS Files
.GPXGPS Exchange File
.KMLKeyhole Markup Language File
.KMZGoogle Earth Placemark File
Web Files
.ASPActive Server Page
.ASPXActive Server Page Extended File
.CERInternet Security Certificate
.CFMColdFusion Markup File
.CSRCertificate Signing Request File
.CSSCascading Style Sheet
.HTMHypertext Markup Language File
.HTMLHypertext Markup Language File
.JSJavaScript File
.JSPJava Server Page
.PHPPHP Source Code File
.RSSRich Site Summary
.XHTMLExtensible Hypertext Markup Language File
Plugin Files
.CRXChrome Extension
.PLUGINMac OS X Plugin
Font Files
.FNTWindows Font File
.FONGeneric Font File
.OTFOpenType Font
.TTFTrueType Font
System Files
.CABWindows Cabinet File
.CPLWindows Control Panel Item
.CURWindows Cursor
.DESKTHEMEPACKWindows 8 Desktop Theme Pack File
.DLLDynamic Link Library
.DMPWindows Memory Dump
.DRVDevice Driver
.ICNSMac OS X Icon Resource File
.ICOIcon File
.LNKWindows File Shortcut
.SYSWindows System File
Settings Files
.CFGConfiguration File
.INIWindows Initialization File
.PRFOutlook Profile File
Encoded Files
.HQXBinHex 4.0 Encoded File
.MIMMulti-Purpose Internet Mail Message File
.UUEUuencoded File
Compressed Files
.7Z7-Zip Compressed File
.CBRComic Book RAR Archive
.DEBDebian Software Package
.GZGnu Zipped Archive
.PKGMac OS X Installer Package
.RARWinRAR Compressed Archive
.RPMRed Hat Package Manager File
.SITXStuffIt X Archive
.TAR.GZCompressed Tarball File
.ZIPZipped File
.ZIPXExtended Zip File
Disk Image Files
.BINBinary Disc Image
.CUECue Sheet File
.DMGMac OS X Disk Image
.ISODisc Image File
.MDFMedia Disc Image File
.TOASTToast Disc Image
.VCDVirtual CD
Developer Files
.CC/C++ Source Code File
.CLASSJava Class File
.CPPC++ Source Code File
.CSVisual C# Source Code File
.DTDDocument Type Definition File
.FLAAdobe Animate Animation
.HC/C++/Objective-C Header File
.JAVAJava Source Code File
.LUALua Source File
.MObjective-C Implementation File
.PLPerl Script
.PYPython Script
.SHBash Shell Script
.SLNVisual Studio Solution File
.SWIFTSwift Source Code File
.VBVisual Basic Project Item File
.VCXPROJVisual C++ Project
.XCODEPROJXcode Project
Backup Files
.BAKBackup File
.TMPTemporary File
Misc Files
.CRDOWNLOADChrome Partially Downloaded File
.ICSCalendar File
.MSIWindows Installer Package
.PARTPartially Downloaded File
.TORRENTBitTorrent File