Common File Types
Common file extensions that are good to know, organized by file format.
| Text Files | |
|---|---|
| .doc | Microsoft Word Document |
| .docx | Microsoft Word Open XML Document |
| .log | Log File |
| .msg | Outlook Mail Message |
| .pages | Pages Document |
| .rtf | Rich Text Format File |
| .txt | Plain Text File |
| .wpd | WordPerfect Document |
| .wps | Microsoft Works Word Processor Document |
| Data Files | |
|---|---|
| .csv | Comma Separated Values File |
| .dat | Data File |
| .efx | eFax Document |
| .epub | Open eBook File |
| .gbr | Gerber File |
| .ibooks | Multi-Touch iBook |
| .key | Keynote Presentation |
| .pps | PowerPoint Slide Show |
| .ppt | PowerPoint Presentation |
| .pptx | PowerPoint Open XML Presentation |
| .sdf | Standard Data File |
| .tax2010 | TurboTax 2010 Tax Return |
| .vcf | vCard File |
| .xml | XML File |
| Audio Files | |
|---|---|
| .aif | Audio Interchange File Format |
| .iff | Interchange File Format |
| .m3u | Media Playlist File |
| .m4a | MPEG-4 Audio File |
| .mid | MIDI File |
| .mp3 | MP3 Audio File |
| .mpa | MPEG-2 Audio File |
| .ra | Real Audio File |
| .wav | WAVE Audio File |
| .wma | Windows Media Audio File |
| Video Files | |
|---|---|
| .3g2 | 3GPP2 Multimedia File |
| .3gp | 3GPP Multimedia File |
| .asf | Advanced Systems Format File |
| .asx | Microsoft ASF Redirector File |
| .avi | Audio Video Interleave File |
| .flv | Flash Video File |
| .mov | Apple QuickTime Movie |
| .mp4 | MPEG-4 Video File |
| .mpg | MPEG Video File |
| .rm | Real Media File |
| .swf | Shockwave Flash Movie |
| .vob | DVD Video Object File |
| .wmv | Windows Media Video File |
| Raster Image Files | |
|---|---|
| .bmp | Bitmap Image File |
| .gif | Graphical Interchange Format File |
| .jpg | JPEG Image File |
| .png | Portable Network Graphic |
| .psd | Adobe Photoshop Document |
| .pspimage | PaintShop Pro Image |
| .thm | Thumbnail Image File |
| .tif | Tagged Image File |
| .yuv | YUV Encoded Image File |
| Vector Image Files | |
|---|---|
| .ai | Adobe Illustrator File |
| .drw | Drawing File |
| .eps | Encapsulated PostScript File |
| .ps | PostScript File |
| .svg | Scalable Vector Graphics File |
| Page Layout Files | |
|---|---|
| .indd | Adobe InDesign Document |
| .pct | Picture File |
| Portable Document Format File | |
| .qxd | QuarkXPress Document |
| .qxp | QuarkXPress Project File |
| .rels | Open Office XML Relationships File |
| Spreadsheet Files | |
|---|---|
| .xlr | Works Spreadsheet |
| .xls | Excel Spreadsheet |
| .xlsx | Microsoft Excel Open XML Spreadsheet |
| Database Files | |
|---|---|
| .accdb | Access 2007 Database File |
| .db | Database File |
| .dbf | Database File |
| .mdb | Microsoft Access Database |
| .pdb | Program Database |
| .sql | Structured Query Language Data |
| Executable Files | |
|---|---|
| .app | Mac OS X Application |
| .bat | DOS Batch File |
| .cgi | Common Gateway Interface Script |
| .com | DOS Command File |
| .exe | Windows Executable File |
| .gadget | Windows Gadget |
| .jar | Java Archive File |
| .pif | Program Information File |
| .vb | VBScript File |
| .wsf | Windows Script File |
| Web Files | |
|---|---|
| .asp | Active Server Page |
| .cer | Internet Security Certificate |
| .csr | Certificate Signing Request File |
| .css | Cascading Style Sheet |
| .htm | Hypertext Markup Language File |
| .html | Hypertext Markup Language File |
| .js | JavaScript File |
| .jsp | Java Server Page |
| .php | Hypertext Preprocessor File |
| .rss | Rich Site Summary |
| .xhtml | Extensible Hypertext Markup Language File |
| System Files | |
|---|---|
| .cab | Windows Cabinet File |
| .cpl | Windows Control Panel Item |
| .cur | Windows Cursor |
| .dll | Dynamic Link Library |
| .dmp | Windows Memory Dump |
| .drv | Device Driver |
| .lnk | File Shortcut |
| .sys | Windows System File |
| Settings Files | |
|---|---|
| .cfg | Configuration File |
| .ini | Windows Initialization File |
| .keychain | Mac OS X Keychain File |
| .prf | Outlook Profile File |
| Encoded Files | |
|---|---|
| .bin | Macbinary Encoded File |
| .hqx | BinHex 4.0 Encoded File |
| .mim | Multi-Purpose Internet Mail Message File |
| .uue | Uuencoded File |
| Compressed Files | |
|---|---|
| .7z | 7-Zip Compressed File |
| .deb | Debian Software Package |
| .gz | Gnu Zipped Archive |
| .pkg | Mac OS X Installer Package |
| .rar | WinRAR Compressed Archive |
| .rpm | Red Hat Package Manager File |
| .sit | StuffIt Archive |
| .sitx | StuffIt X Archive |
| .tar.gz | Compressed Tarball File |
| .zip | Zipped File |
| .zipx | Extended Zip File |
| Developer Files | |
|---|---|
| .c | C/C++ Source Code File |
| .class | Java Class File |
| .cpp | C++ Source Code File |
| .cs | Visual C# Source Code File |
| .dtd | Document Type Definition File |
| .fla | Adobe Flash Animation |
| .java | Java Source Code File |
| .m | Objective-C Implementation File |
| .pl | Perl Script |
| .py | Python Script |
| Misc Files | |
|---|---|
| .dbx | Outlook Express E-mail Folder |
| .msi | Windows Installer Package |
| .part | Partially Downloaded File |
| .torrent | BitTorrent File |