File Formats

There are a huge number of different computer file formats available. Here we describe some of the most popular. Click on a file extension for more detailed information.

If you want to convert a file from one format to another we make that super easy to do at Zamzar. Just upload your file and let us do all the hard work. Zamzar supports conversion between most of the formats below!

We're adding support for new formats all the time. If there's a format that you'd like us to support why not contact us and we'll do our best to add it.

Click a category to see details of the file formats:

Document file formats
File Format Author What programs use it?
csv - Comma Separated ValuesMicrosoftThe CSV file format is very simple and supported by almost all spreadsheets and database management systems
djvu - DjVu FileAT&T Labs - ResearchDjVuLibre DjView
LizardTech Browser Plug In
MacDjView Desktop Viewer
WinDjView
doc - Microsoft Word DocumentMicrosoftAbiWord
Apple Pages
AppleWorks
KWord
Microsoft Word
StarOffice
docx - Microsoft Word 2007 DocumentMicrosoftMicrosoft Word 2007
Microsoft Word 2008 (MAC)
OxygenOffice Professional (Linux)
Word 2010
eml - E-MailMicrosoftApple Mail
IncrediMail
Microsoft Outlook
Microsoft Windows Live Mail
Mozilla Thunderbird
eps - Encapsulated PostScriptAdobe SystemsAdobe Acrobat
Adobe Illustrator
Adobe Photoshop
CorelDRAW
Microsoft Digital Image Editor
QuarkXPress
html - Hypertext Markup LanguageWorld Wide Web Consortium & WHATWGAny Web Browser (e.g. Internet Explorer, Safari, Firefox, Google Chrome)
html4 - Hypertext Markup LanguageWorld Wide Web Consortium & WHATWGAny Web Browser (e.g. Internet Explorer, Safari, Firefox, Google Chrome)
html5 - Hypertext Markup LanguageWorld Wide Web Consortium & WHATWGAny Web Browser (e.g. Internet Explorer, Safari, Firefox, Google Chrome)
json - JavaScript Object NotationDouglas CrockfordGoogle Chrome
Microsoft Notepad
Microsoft WordPad
Mozilla Firefox
TextWrangler
key - Apple iWork Keynote PresentationApple IncApple iWork
Keynote 5.1
Keynote 5.2
Keynote 5.3
Keynote 6.0
Keynote 6.1
Keynote 6.2
Keynote 6.5
key09 - Apple iWork '09 Keynote DocumentApple IncKeynote 5.0
Keynote 5.1
Keynote 5.2
Keynote 5.3
iWork '09
key.zip - Apple iWork '05-'08 Keynote PresentationApple IncApple iWork '05
Apple iWork '08
Keynote 1.0
Keynote 2.0
Keynote 3.0
Keynote 4.0
mdb - Microsoft Access DatabaseMicrosoftMDB Viewer Plus
Microsoft Access
mpp - Microsoft Project DocumentMicrosoftMicrosoft Project
msg - Encapsulated email messageMicrosoftEncryptomatic MsgViewer Pro
Microsoft Outlook
Priasoft MSG File Viewer and Assessor
numbers - Apple iWork Numbers SpreadsheetAppleApple iWork
Numbers 2.1
Numbers 2.2
Numbers 2.3
Numbers 3.0
Numbers 3.5
numbers09 - Apple iWork '09 Numbers SpreadsheetAppleApple iWork
Numbers 2.0
Numbers 2.1
Numbers 2.2
Numbers 2.3
numbers.zip - Apple iWork '08 Numbers SpreadsheetApple IncApple iWork '05
Apple iWork '08
Numbers 1.0
odp - OpenDocument presentationSun Microsystems and OasisCorel WordPerfect
KOffice
Lotus Symphony
NeoOffice
OpenOffice Impress
StarOffice
ods - OpenDocument spreadsheetSun MicrosystemsMicrosoft Office 2007
Microsoft Office 2010
OpenOffice Calc
odt - OpenDocument textSun MicrosystemsMicrosoft Office 2007
Microsoft Office 2010
OpenOffice Writer
pages - Apple iWork Pages DocumentApple IncApple iWork
Pages 4.1
Pages 4.2
Pages 4.3
Pages 5.0
Pages 5.1
Pages 5.2
Pages 5.5
pages09 - Apple iWork '09 Pages DocumentApple IncPages 4.0
Pages 4.1
Pages 4.2
Pages 4.3
iWork '09
pages.zip - Apple iWork '05-'08 Pages DocumentApple IncApple iWork '05
Apple iWork '08
Pages 1.0
Pages 2.0
Pages 3.0
pdf - Portable Document FormatAdobe SystemsAdobe Viewer
Ghostscript
Ghostview
Xpdf
gPDF
pps - Microsoft PowerPoint PresentationMicrosoftApple Keynote
Microsoft PowerPoint
OpenOffice
ppsx - Microsoft PowerPoint 2007 Slide ShowMicrosoftApple Keynote
Microsoft PowerPoint
OpenOffice
ppt (1997-2003) - Microsoft PowerPoint Presentation 
ppt - Microsoft PowerPoint PresentationMicrosoftApple Keynote
Microsoft PowerPoint
OpenOffice
pptx - Microsoft PowerPoint 2007 PresentationMicrosoftApple Keynote
Microsoft PowerPoint
OpenOffice
ps - PostScriptAdobe SystemsAdobe Acrobat
Adobe Photoshop
Quark Xpress
pst - Personal Folder File 
pub - Microsoft PublisherMicrosoftMicrosoft Publisher
rtf - Rich Text FormatMicrosoftAbiWord
Kword
Microsoft Word
TextEdit
WordPad
swf - Macromedia Flash Format FileFutureWave SoftwareAdobe Flash Player (standalone program)
Web browser with the Flash plug-in installed
txt - Text DocumentVariousNotepad
TextEdit
WordPad
vsd - Visio DrawingMicrosoftMicrosoft Internet Explorer
Microsoft Visio
Microsoft Visio Viewer
vsdx - Visio 2013 DrawingMicrosoftMicrosoft Visio 2013
wks - Microsoft Works SpreadsheetMicrosoftMicrosoft Works
wpd - WordPerfect DocumentCorelCorel WordPerfect
Microsoft Word
OpenOffice Writer
wps - Microsoft Works DocumentMicrosoftMicrosoft Word
Microsoft Works Word Processor
NeoOffice
OxygenOffice
Works Converter
xls - Microsoft Excel SpreadsheetMicrosoftMicrosoft Excel
Microsoft Excel Viewer
OpenOffice
xlsx - Microsoft Excel 2007 SpreadsheetMicrosoftMicrosoft Excel 2007
OpenOffice
OxygenOffice Progessional (Linux)
xlr - Works Spreadsheet or Chart (Microsoft Corporation)MicrosoftMicrosoft Works
xml - Extensible Markup LanguageWorld Wide Web ConsortiumChrome
Firefox
Microsoft Internet Explorer
Microsoft Office InfoPath
Notepad
Oxygen XML Editor
Safari
xps - Open XML Paper SpecificationMicrosoftChrome
Firefox
Microsoft Internet Explorer
Microsoft XPS Viewer
Safari
Image file formats
File Format Author What programs use it?
3fr - Hasselblad 3F RAW ImageVictor Hasselblad ABAdobe Photoshop
Adobe Photoshop Elements
Corel Draw
ai - Adobe Illustrator ArtworkAdobeAdobe Photoshop
Adobe Reader
Corel Paint Shop Pro
arw - Sony Alpha RawSonyAdobe Photoshop
Adobe Photoshop Elements
Corel Draw
GIMP
Google Picasa
XnView
bmp - Windows bitmapMicrosoftAdobe Photoshop
MS Paint
Microsoft Photo Editor
Paintbrush
cdr - Corel Draw Vector drawing fileCorel CorporationAdobe Illustrator
Adobe Reader
Corel PaintShop Photo Pro
Corel WordPerfect Office
LibreOffice
cr2 - Canon RAW version 2Canon Inc.Adobe Photoshop
Adobe Photoshop Lightroom
Paint Shop Pro
Picasa
digiKam
crw - Canon RAW CIFF Image FileCannonAdobe Photoshop
Adobe Photoshop Elements
Corel Draw
Google Picasa
Microsoft Windows Photos
dcr - Kodak RAW Image FileKodakAdobe Photoshop
Adobe Photoshop Elements
Corel Draw
Google Picasa
dng - Digital NegativeAdobeAdobe Photoshop
Adobe Photoshop Elements
Adobe Photoshop Lightroom
Corel Draw
Google Picasa
emf - Windows Enhanced MetafileMicrosoftMicrosoft Publisher
Microsoft Word
QuarkXPress
erf - Epson RAW FileEpsonAdobe Photoshop
Adobe Photoshop Elements
Corel Draw
Epson PhotoRAW
gif - Compuserve graphics interchangeCompuServeAdobe Photoshop
Apple Preview
Corel Paint Shop Pro
Microsoft Windows Photo Gallery Viewer
ico - Windows IconMicrosoftAdobe Photoshop
Microsoft Paint
Windows Picture and Fax Viewer
jpg - JPEG compliant imageThe JPEG CommitteeAdobe Photoshop
Apple Preview
Corel Paint Shop Pro
Microsoft Windows Photo Gallery Viewer
mdi - Microsoft Document ImagingMicrosoftMicrosoft Office Imaging
mef - Mamiya RAW ImageMamiyaAdobe DNG Converter
Adobe Photoshop
Adobe Photoshop Elements
Corel Draw
mrw - Minolta RAWMinoltaAdobe Photoshop
Adobe Photoshop Elements
Apple Photos
Corel Draw
Google Picasa
Microsoft Windows Photos
nef - Nikon Electronic FormatNikon Inc.Adobe Photoshop
Adobe Photoshop Lightroom
Paint Shop Pro
Picasa
digiKam
odg - OpenDocument DrawingSun MicrosystemsLibre Office
OpenOffice Draw
orf - Olympus RAW Image fileOlympusAdobe Photoshop
Adobe Photoshop Elements
Corel Draw
Google Picasa
Olympus Master
pcx - Paintbrush Bitmap ImageZSoft CorporationAdobe Photoshop
Microsoft Paint
Windows Picture and Fax Viewer
pef - Pentax RAW filePentaxAdobe Photoshop
Adobe Photoshop Elements
Corel Draw
Google Picasa
png - Portable Network GraphicPNG Development GroupApple Preview
Corel Paint Shop Pro
GIMP - The GNU Image Manipulation Program (LINUX)
Microsoft Windows Photo Gallery Viewer
Safari
ppm - Portable Pixmap fileJef PoskanzerAdobe Photoshop
Corel Draw
GIMP
Netpbm
psd - Photoshop DocumentAdobe SystemsAdobe Illustrator CS6
Adobe InDesign CS6
Adobe Photoshop
GIMP
raf - Fuji RAW Image FileFujiAdobe Lightroom
Adobe Photoshop
Adobe Photoshop Elements
Corel Draw
Google Picasa
raw - RAW Image FileVariousAdobe Photoshop
Adobe Photoshop Elements
Apple Preview
Corel Draw
Google Picasa
sr2 - Sony RAW Image FileSonyAdobe DNG Converter
Corel Draw
Microsoft Windows Photos
XnViewMP
svg - Scalable Vector GraphicsWorld Wide Web ConsortiumAdobe Photoshop
Apple Preview
Corel Paint Shop Pro
Corel SVG Viewer
tga - Truevision Targa GraphicTruevisionAdobe Photoshop
Corel Paint Shop Pro
GIMP
Painter
thumbnail - Thumbnail image 
tiff - Tagged image file formatAldus, Adobe SystemsCyberLink PowerDVD
InterVideo WinDVD
VideoLAN VLC Media Player
Windows Media Player
wbmp - Wireless Bitmap File FormatWAP ForumAdobe Photoshop
Microsoft Paint
Windows Picture and Fax Viewer
webp - Lossily compressed image fileGoogleAdobe Photoshop
Google Chrome
Picasa
wmf - Windows MetafileMicrosoftMicrosoft Publisher
Microsoft Word
QuarkXPress
x3f - Sigma Camera RAW Picture FileSigma & Foveon Inc.Adobe Photoshop
Corel Draw
Google Picasa
xcf - eXperimental Computing FacilityeXperimental Computing Facility of the University of California at BerkeleyCorelDraw
GIMP
XnViewMP
Audio file formats
File Format Author What programs use it?
3ga - 3GA Multimedia File3rd Generation Partnership Project (3GPP)QuickTime Player
VLC Media Player
Windows Media Player
aac - Advanced Audio Coding FileA combination of Fraunhofer IIS, AT&T Bell Laboratories, Dolby and Sony CorporationKMPlayer
RealPlayer
VideoLAN VLC Media Player
Windows Media Player
iTunes
ac3 - AC3 Audio FileDolby DigitalQuickTime Player
VLC Media Player
Windows Media Player
aifc - Audio Interchange File Format CompressedApple IncApple QuickTime
VLC media Player
Winamp
Windows Media Player
aiff - Audio Interchange File FormatApple IncApple QuickTime
VLC media Player
Winamp
Windows Media Player
amr - Adaptive Multi-Rate Audio Codec3rd Generation Partnership Project (3GPP)Apple QuickTime
Realplayer
VLC media Player
Winamp
ape - Monkeys AudioMonkeys AudioAPE Player
VLC media Player
caf - Core Audio FormatApple IncApple QuickTime
VLC media Player
flac - Free Lossless Audio CodecXiph.Org FoundationReal Player
VLC Media Player
Windows Media Player
m4a - Compressed video fileAppleApple QuickTime Player
Apple iTunes
Microsoft Windows Media Player
m4b - MPEG-4 Audio Layer Bookmarkable FileAppleApple QuickTime Player
Apple iTunes
m4r - iPhone Ringtone FileAppleApple QuickTime Player
Apple iTunes
midi - Musical Instrument Digital InterfaceVariousAudio Evolution
GarageBand
Master Tracks Pro
Sonar
mp3 - Compressed audio fileMoving Picture Experts GroupRealOne
WinAmp
Windows Media Player
iTunes
oga - Ogg Audio Only FileXiph.Org FoundationApple QuickTime Player
Real Player
Windows Media Player
ogg - Ogg Vorbis Compressed Audio FileXiph.Org FoundationApple QuickTime Player
Real Player
Windows Media Player
ra - RealMedia Streaming MediaReal NetworksRealNetworks RealPlayer
ram - RealMedia MetafileReal NetworksRealNetworks RealPlayer
rm - RealMedia Streaming MediaReal NetworksRealNetworks RealPlayer
wav - Windows audio fileMicrosoft & IBMCyberLink PowerDirector
Microsoft Windows Media Player
Roxio Creator 2009
wma - Windows Media AudioMicrosoftMPlayer
Realplayer
VLC Media Player
Windows Media Player
Windows Movie Maker
Video file formats
File Format Author What programs use it?
264 - H.264 Raw FilesInternational Telecommunications Union and International Organization for Standardization/International Electrotechnical Commission Moving Picture Experts GroupVideoLAN VLC Media Player
3g2 - 3GPP2 Multimedia File3rd Generation Partnership Project 2Apple QuickTime Player
GOM Player
Microsoft Media Player Classic
Totem
VideoLAN VLC Media Player
3gp - 3GPP Multimedia File3rd Generation Partnership Project (3GPP)QuickTime Player
VLC Media Player
Windows Media Player
3gpp - 3GPP Multimedia File3rd Generation Partnership Project (3GPP)QuickTime Player
VLC Media Player
Windows Media Player
asf - Advanced Streaming FormatMicrosoftReal Player
VLC Media Player
Windows Media Player
avi - Windows video fileMicrosoftALLPlayer
Apple QuickTime Player
Microsoft Windows Media Player
VideoLAN VLC Media Player
f4v - Flash MP4 videoAppleFFDShow
Microsoft Windows Photo Gallery Viewer
VideoLAN VLC Media Player
Windows Media Player
flv - Flash videoAdobe Systems IncorporatedFFDShow
Microsoft Windows Photo Gallery Viewer
VideoLAN VLC Media Player
Windows Media Player
gvi - Google video fileGoogleGoogle VideoPlayer
VideoLAN VLC Media Player
Windows MediaPlayer classic
ipad - MPEG-4 (H264) Video File 
iphone - MPEG-4 (H264) Video File 
ipod - MPEG-4 Video File 
m2ts - Blu-ray BDAV Video fileBlu-ray Disc AssociationVideoLAN VLC Media Player
Windows Media Player
m4v - MPEG-4 Video FileAppleApple QuickTime Player
Apple iTunes
VLC Media Player
mkv - Matroska Multimedia ContainerSteve LhommeVLC Media Player
mov - Apple QuickTime MovieAppleApple QuickTime Player
CyberLink PowerDirector
Roxio Easy Media Creator
mod - Hard disk camera movieJVC/PanasonicQuicktime Player
VLC Media Player
Windows Media Player
mp4 - MPEG-4 Video FileMoving Picture Experts GroupApple QuickTime Player
Apple iTunes
Microsoft Windows Media Player
VideoLAN VLC Media Player
mpg - Moving Picture Experts Group FileISO, IECVideoLAN VLC Media Player
Windows Media Player
mts - AVCHD Video FileSony, PanasonicVideoLAN VLC Media Player
Windows Media Player
rmvb - RealVideo Variable Bit Rate FileRealNetworksRealPlayer
VLC Media Player
ts - Video Transport Stream FileMPEGVideoLAN VLC Media Player
vob - Video Object FileAppleAdobe Flash Player (standalone program)
Web browser with the Flash plug-in installed
webm - Multimedia Container FormatGoogle (Previously developed by On2, Xiph, and Matroska)Google Chrome
Mozilla Firefox
VLC Media Player
wmv - Windows Media VideoMicrosoftMPlayer
Microsoft Windows Media Player
PowerDVD
RealPlayer
VideoLAN VLC Media Player
e-Book file formats
File Format Author What programs use it?
azw - Amazon Kindle eBook FileAmazonKindle Reader
Kindle for Android
Kindle for iOS
azw3 - Amazon KF8 eBook FileAmazonKindle Fire
Kindle Reader
Kindle for Android
Kindle for iOS
cbc - eBook FormatVariousComic Book Collector
cbr - Comic Book RAR ArchiveVariousCDisplay
ComicFlow
Perfect Viewer
cbz - Comic Book Archive FileVariousCDisplay
ComicFlow
Perfect Viewer
chm - Compiled HTML Help FileMicrosoftBeyond CHM
Internet Explorer
Microsoft Reader
Mozilla Firefox
epub - Open eBook FileInternational Digital Publishing Forum (IDPF)Adobe Digital Editions
Apple iBooks
Mobipocket Reader Desktop
Sony Reader
fb2 - FictionBook 2.0 FileFictionBookApple iBooks
Calibre
Cool Viewer
lit - Microsoft eBook FileMicrosoftMicrosoft Reader
lrf - Sony Portable Reader FileSonySony Reader
lzh - Compressed Archive FileHaruyasu YoshizakiLHA
WinRAR
WinZip
mobi - Mobipocket eBookMobipocket / AmazonAmazon Kindle
Apple iBooks
Mobipocket Reader Desktop
oeb - Open eBook FileInternational Digital Publishing Forum (IDPF)Adobe Digital Editions
Apple iBooks
Sony Reader
pdb - Palm Media eBook FilePalm, Inc.ICE Book Reader
Palm Reader
pml - eBook FilePalm, Inc.Adobe Framemaker
Dropbook
MakeBook
prc - Mobipocket eBook FileMobipocketAmazon Kindle
Apple iBooks
Mobipocket Reader Desktop
rb - RocketEdition eBook FileNuvoMediaBook Designer
GEB Librarian
RB2Project
Compressed file formats
File Format Author What programs use it?
7z - 7-Zip Compressed File7-zip7Zip
WinRAR
WinZip
cab - Cabinet FileMicrosoftMakeCab
StuffIt
WinRAR
WinZip
rar - WinRAR Compressed ArchiveEugene Roshal7Zip
StuffIt
WinRAR
WinZip
tar - Tape Archive FileThe GNU ProjectApple Archive Utility
GNU Tar
StuffIt
WinZip
tar.bz2 - Bzip 2 UNIX Compressed File 
tar.gzh - Gzip Compressed Archive 
tar.gz - Gzip Compressed ArchiveThe GNU ProjectSTDU Viewer
eBook for EPOC
tcr - Psion eBook FilePsion TeklogixApple Archive Utility
GNU Tar
StuffIt
WinZip
yz1 - DeepFreezer Compressed ArchiveYamazaki ZIPPERDeepFreeezer
IZArc
TUGZip
ZipZag
zip - Compressed Archive FilePKWAREStuffIt
WinRAR
Winzip
zip1 - Compressed Archive File 
CAD file formats
File Format Author What programs use it?
dwg - AutoCAD Drawing DatabaseAutodeskAdobe Illustrator
AutoCAD
Autodesk DWG TrueView
CorelCAD
dxf - AutoCAD Drawing Interchange FormatAutodeskAdobe Illustratror
AutoCAD
CorelCAD
Open Office
PaintShop Pro