Common File Types

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

Text Files

Extension File Type
.DOCMicrosoft Word Document (Legacy)
.DOCXMicrosoft Word Document
.LOGLog File
.MSGOutlook Message Item File
.ODTOpenDocument Text Document
.PAGESApple Pages Document
.RTFRich Text Format File
.TEXLaTeX Source Document
.TXTPlain Text File
.WPDWordPerfect Document
.WPSMicrosoft Works Word Processor Document
See all text file types

Data Files

Extension File Type
.CSVComma-Separated Values File
.DATData File
.GEDGEDCOM Genealogy Data File
.KEYApple Keynote Presentation
.KEYCHAINMac OS X Keychain File
.PPTMicrosoft PowerPoint Presentation (Legacy)
.PPTXMicrosoft PowerPoint Presentation
.SDFStandard Data File
.TARConsolidated Unix File Archive
.TAX2016TurboTax 2016 Tax Return
.TAX2020TurboTax 2020 Tax Return
.TAX2021TurboTax 2021 Tax Return
.VCFvCard File
See all data file types

Audio Files

Extension File Type
.AIFAudio Interchange File Format
.IFFInterchange File Format
.M3UM3U Media Playlist
.M4AMPEG-4 Audio File
.MP3MP3 Audio File
.MPAMPEG-2 Audio File
.WAVWAVE Audio File
.WMAWindows Media Audio File
See all audio file types

Video Files

Extension File Type
.3G23GPP2 Multimedia File
.3GP3GPP Multimedia File
.ASFAdvanced Systems Format File
.AVIAudio Video Interleave File
.FLVFlash Video File
.M4ViTunes Video File
.MOVApple QuickTime Movie
.MP4MPEG-4 Video
.RMRealMedia File
.SRTSubRip Subtitle File
.SWFShockwave Flash Movie
.VOBDVD Video Object File
.WMVWindows Media Video
See all video file types

3D Image Files

Extension File Type
.3DMRhino 3D Model
.3DS3D Studio Scene
.MAX3ds Max Scene File
.OBJWavefront 3D Object File
See all 3d image file types

Raster Image Files

Extension File Type
.BMPBitmap Image
.DDSDirectDraw Surface Image
.GIFGraphical Interchange Format File
.HEICHigh Efficiency Image Format
.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
See all raster image file types

Vector Image Files

Extension File Type
.AIAdobe Illustrator Artwork
.EPSEncapsulated PostScript File
.SVGScalable Vector Graphics File
See all vector image file types

Page Layout Files

Extension File Type
.INDDAdobe InDesign Document
.PCTPicture File
.PDFPortable Document Format File
See all page layout file types

Spreadsheet Files

Extension File Type
.XLRWorks Spreadsheet
.XLSMicrosoft Excel Spreadsheet (Legacy)
.XLSXMicrosoft Excel Spreadsheet
See all spreadsheet file types

Database Files

Extension File Type
.ACCDBAccess 2007 Database
.DBDatabase File
.DBFDatabase File
.MDBMicrosoft Access Database
.PDBProgram Database
.SQLStructured Query Language Data File
See all database file types

Executable Files

Extension File Type
.APKAndroid Package File
.APPmacOS Application Bundle
.BATDOS Batch File
.CGICommon Gateway Interface Script
.COMDOS Command File
.EXEWindows Executable File
.GADGETWindows Gadget
.JARJava Archive
.WSFWindows Script File
See all executable file types

Game Files

Extension File Type
.BGrand Theft Auto 3 Saved Game File
.DEMVideo Game Demo File
.GAMSaved Game File
.NESNintendo (NES) ROM File
.ROMN64 Game ROM File
.SAVSaved Game
See all game file types

CAD Files

Extension File Type
.DWGAutoCAD Drawing
.DXFDrawing Exchange Format File
See all cad file types

GIS Files

Extension File Type
.GPXGPS Exchange File
.KMLKeyhole Markup Language File
.KMZGoogle Earth Placemark File
See all gis file types

Web Files

Extension File Type
.ASPActive Server Page
.ASPXActive Server Page Extended File
.CERInternet Security Certificate
.CFMColdFusion Markup File
.CRDOWNLOADChrome Partially Downloaded File
.CSRCertificate Signing Request File
.CSSCascading Style Sheet
.DCRShockwave Media File
.HTMHypertext Markup Language File
.HTMLHypertext Markup Language File
.JSJavaScript File
.JSPJakarta Server Page
.PHPPHP Source Code File
.RSSRich Site Summary
.XHTMLExtensible Hypertext Markup Language File
See all web file types

Plugin Files

Extension File Type
.CRXChrome Extension
.PLUGINMac OS X Plugin
See all plugin file types

Font Files

Extension File Type
.FNTWindows Font File
.FONWindows Font Library
.OTFOpenType Font
.TTFTrueType Font
See all font file types

System Files

Extension File Type
.CABWindows Cabinet File
.CPLWindows Control Panel Item
.CURWindows Cursor
.DESKTHEMEPACKWindows 8 Desktop Theme Pack File
.DLLDynamic Link Library
.DMPWindows Memory Dump
.DRVDevice Driver
.ICNSmacOS Icon Resource File
.ICOIcon File
.LNKWindows Shortcut
.SYSWindows System File
See all system file types

Settings Files

Extension File Type
.CFGConfiguration File
.INIWindows Initialization File
.PRFOutlook Profile File
See all settings file types

Encoded Files

Extension File Type
.HQXBinHex 4.0 Encoded File
.MIMMulti-Purpose Internet Mail Message File
.UUEUuencoded File
See all encoded file types

Compressed Files

Extension File Type
.7Z7-Zip Compressed File
.CBRComic Book RAR Archive
.DEBDebian Software Package
.GZGnu Zipped Archive
.PKGmacOS Installer Package
.RARWinRAR Compressed Archive
.RPMRed Hat Package Manager File
.SITXStuffIt X Archive
.TAR.GZCompressed Tarball File
.ZIPZipped File
.ZIPXExtended Zip Archive
See all compressed file types

Disk Image Files

Extension File Type
.BINBinary Disc Image
.CUECue Sheet File
.DMGApple Disk Image
.ISODisc Image File
.MDFMedia Disc Image File
.TOASTToast Disc Image
.VCDVirtual CD
See all disk image file types

Developer Files

Extension File Type
.CC/C++ Source Code File
.CLASSJava Class File
.CPPC++ Source Code File
.CSC# 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
See all developer file types

Backup Files

Extension File Type
.BAKBackup File
.TMPTemporary File
See all backup file types

Misc Files

Extension File Type
.ICSCalendar File
.MSIWindows Installer Package
.PARTPartially Downloaded File
.TORRENTBitTorrent File
See all misc file types