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Browse by file type:
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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
| .blg | Windows Binary Performance Log File | | .csv | Comma Separated Values File | | .dat | Data File | | .efx | eFax Document | | .pps | PowerPoint Slide Show | | .ppt | PowerPoint Presentation | | .pptx | PowerPoint Open XML Presentation | | .sdf | Standard Data File | | .sql | Structured Query Language Data | | .vcf | vCard File | | .xml | XML 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 Photo 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 |
3D Image Files
| .3dm | Rhino 3D Model | | .max | 3ds Max Scene File |
Page Layout Files
| .indd | Adobe InDesign File | | .pct | Picture File | | .pdf | Portable Document Format File | | .qxd | QuarkXPress Document | | .qxp | QuarkXPress Project File | | .rels | Open Office XML Relationships File |
Audio Files
| .aac | Advanced Audio Coding File | | .aif | Audio Interchange File Format | | .iff | Interchange File Format | | .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 | Flash Movie | | .vob | DVD Video Object File | | .wmv | Windows Media Video 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 |
Font Files
Plugin Files
System Files
| .cab | Windows Cabinet File | | .cpl | Windows Control Panel | | .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 |
Executable Files
| .app | Mac OS X Application | | .bat | DOS Batch File | | .cgi | Common Gateway Interface Script | | .com | DOS Command File | | .exe | Windows Executable File | | .jar | Java Archive File | | .pif | Program Information File | | .vb | VBScript File | | .wsf | Windows Script 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 | | .sit | Stuffit Archive | | .sitx | Stuffit X Archive | | .tar.gz | Tarball File | | .zip | Zipped File | | .zipx | Extended Zip File |
Encoded Files
| .bin | Macbinary Encoded File | | .hqx | BinHex 4.0 Encoded File | | .mim | Multi-Purpose Internet Mail Message File | | .uue | Uuencoded 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 | | .java | Java Source Code File | | .m | Objective-C Implementation File | | .pl | Perl Script |
Backup Files
Disk Image Files
Game Files
| .gam | Saved Game File | | .nes | Nintendo (NES) ROM File | | .rom | N64 Game ROM File | | .sav | Saved Game |
Misc Files
| .dbx | Outlook Express E-mail Folder | | .key | Keynote Presentation | | .msi | Windows Installer Package | | .part | Partially Downloaded File | | .torrent | BitTorrent File |
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