Common File Extensions

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Common File Extensions

Common File Extensions. Windows file names have two parts, the name, then a period and the extension (suffix). The extension is a three or four letter abbreviation that comes after the period. For example, in letter.doc the filename is letter and the extension is doc.

Extensions are important because they tell your computer what icon to use for the file, and what application can open the file. For example, the doc extension tells your computer that the file is a Microsoft Word file.

Here are a list of mostly used common file extensions.

File format and its common file extensions:

Text Files format and its extension

  1. .doc      Microsoft Word Document
  2. .docx    Microsoft Word Open XML Document
  3. .log       Log File
  4. .msg     Outlook Mail Message
  5. .pages  Pages Document
  6. .rtf         Rich Text Format File
  7. .txt        Plain Text File
  8. .wpd     WordPerfect Document
  9. .wps     Microsoft Works Word Processor Document

Data Files format and its extension

  1. .csv        Comma Separated Values File
  2. .dat         Data File
  3. .efx         eFax Document
  4. .gbr         Gerber File
  5. .key         Keynote Presentation
  6. .pps         PowerPoint Slide Show
  7. .ppt          PowerPoint Presentation
  8. .pptx        PowerPoint Open XML Presentation
  9. .sdf          Standard Data File
  10. .tax2010   TurboTax 2010 Tax Return
  11. .vcf           vCard File
  12. .xml          XML File

Audio File format and its extension

  1. .aif            Audio Interchange File Format
  2. .iff             Interchange File Format
  3. .m3u         Media Playlist File
  4. .m4a         MPEG-4 Audio File
  5. .mid          MIDI File
  6. .mp3         MP3 Audio File
  7. .mpa         MPEG-2 Audio File
  8. .ra             Real Audio File
  9. .wav          WAVE Audio File
  10. .wma         Windows Media Audio File

Video Files format and its extension

  1. .3g2           3GPP2 Multimedia File
  2. .3gp           3GPP Multimedia File
  3. .asf            Advanced Systems Format File
  4. .asx           Microsoft ASF Redirector File
  5. .avi            Audio Video Interleave File
  6. .flv             Flash Video File
  7. .mov          Apple QuickTime Movie
  8. .mp4          MPEG-4 Video File
  9. .mpg          MPEG Video File
  10. .rm             Real Media File
  11. .swf            Shockwave Flash Movie
  12. .vob            DVD Video Object File
  13. .wmv          Windows Media Video File

3D Image Files format and its extension

1. 3dm             Rhino 3D Model

2. max             3ds Max Scene File

Raster Image Files format and its extension

  1. .bmp             Bitmap Image File
  2. .gif                Graphical Interchange Format File
  3. .jpg               JPEG Image File
  4. .png              Portable Network Graphic
  5. .psd              Adobe Photoshop Document
  6. .pspimage    PaintShop Pro Image
  7. .thm              Thumbnail Image File
  8. .tif                 Tagged Image File
  9. .yuv              YUV Encoded Image File

Vector Image Files format and its extension

  1. .ai                   Adobe Illustrator File
  2. .drw                Drawing File
  3. .eps                Encapsulated PostScript File
  4. .ps                  PostScript File
  5. .svg                Scalable Vector Graphics File

Page Layout Files format and its extension

  1. .indd               Adobe InDesign Document
  2. .pct                 Picture File
  3. .pdf                 Portable Document Format File
  4. .qxd                QuarkXPress Document
  5. .qxp                QuarkXPress Project File
  6. .rels                Open Office XML Relationships File

Spreadsheet Files format and its extension

  1. .xlr                   Works Spreadsheet
  2. .xls                  Excel Spreadsheet
  3. .xlsx                Microsoft Excel Open XML Spreadsheet

Database Files format and its extension

  1. .accdb             Access 2007 Database File
  2. .db                   Database File
  3. .dbf                  Database File
  4. .mdb                Microsoft Access Database
  5. .pdb                 Program Database
  6. .sql                  Structured Query Language Data

Executable Files format and its extension

  1. .app                 Mac OS X Application
  2. .bat                  DOS Batch File
  3. .cgi                  Common Gateway Interface Script
  4. .com                DOS Command File
  5. .exe                 Windows Executable File
  6. .gadget           Windows Gadget
  7. .jar                  Java Archive File
  8. .pif                  Program Information File
  9. .vb                  VBScript File
  10. .wsf                Windows Script File

Game Files format and its extension

  1. .gam               Saved Game File
  2. .nes                Nintendo (NES) ROM File
  3. .rom               N64 Game ROM File
  4. .sav                Saved Game

CAD Files format and its extension

  1. .dwg               AutoCAD Drawing Database File
  2. .dxf                 Drawing Exchange Format File

GIS Files format and its extension

  1. .gpx                GPS Exchange File
  2. .kml                Keyhole Markup Language File

Web Files format and its extension

  1. .asp                Active Server Page
  2. .cer                 Internet Security Certificate
  3. .csr                 Certificate Signing Request File
  4. .css                Cascading Style Sheet
  5. .htm               Hypertext Markup Language File
  6. .html              Hypertext Markup Language File
  7. .js                   JavaScript File
  8. .jsp                 Java Server Page
  9. .php                Hypertext Preprocessor File
  10. .rss                 Rich Site Summary
  11. .xhtml             Extensible Hypertext Markup Language File

Plugin Files format and its extension

  1. .8bi                  Photoshop Plug-in
  2. .plugin            Mac OS X Plug-in
  3. .xll                   Excel Add-In File

Font Files format and its extension

  1. .fnt                  Windows Font File
  2. .fon                 Generic Font File
  3. .otf                  OpenType Font
  4. .ttf                   TrueType Font

System Files format and its extension

  1. .cab                Windows Cabinet File
  2. .cpl                 Windows Control Panel Item
  3. .cur                 Windows Cursor
  4. .dll                  Dynamic Link Library
  5. .dmp               Windows Memory Dump
  6. .drv                 Device Driver
  7. .lnk                 File Shortcut
  8. .sys                Windows System File

Settings Files format and its extension

  1. .cfg                Configuration File
  2. .ini                 Windows Initialization File
  3. .keychain      Mac OS X Keychain File
  4. .prf                 Outlook Profile File

Encoded Files format and its extension

  1. .bin                Macbinary Encoded File
  2. .hqx               BinHex 4.0 Encoded File
  3. .mim              Multi-Purpose Internet Mail Message File
  4. .uue               Uuencoded File

Compressed Files format and its extension

  1. .7z                 7-Zip Compressed File
  2. .deb              Debian Software Package
  3. .gz                Gnu Zipped Archive
  4. .pkg              Mac OS X Installer Package
  5. .rar                WinRAR Compressed Archive
  6. .rpm              Red Hat Package Manager File
  7. .sit                 StuffIt Archive
  8. .sitx               StuffIt X Archive
  9. .tar.gz            Tarball File
  10. .zip                 Zipped File
  11. .zipx               Extended Zip File

Disk Image Files format and its extension

  1. .dmg               Mac OS X Disk Image
  2. .iso                 Disc Image File
  3. .toast             Toast Disc Image
  4. .vcd                Virtual CD

Developer Files format and its extension

  1. .c                    C/C++ Source Code File
  2. .class             Java Class File
  3. .cpp                C++ Source Code File
  4. .cs                  Visual C# Source Code File
  5. .dtd                Document Type Definition File
  6. .fla                 Adobe Flash Animation
  7. .java              Java Source Code File
  8. .m                  Objective-C Implementation File
  9. .pl                  Perl Script
  10. .py                 Python Script

Backup Files format and its extension

  1. .bak               Backup File
  2. .gho               Norton Ghost Backup File
  3. .ori                 Original File
  4. .tmp               Temporary File

Misc Files format and its extension

  1. .dbx               Outlook Express E-mail Folder
  2. .msi               Windows Installer Package
  3. .part               Partially Downloaded File
  4. .torrent          BitTorrent File

Some of the popular Image File Extensions Type used for web

.GIF (Graphic Interchange Format) files use a maximum of 256 colors, and are best for displaying non continuous-tone images or those with large areas of flat colors, such as navigation bars, buttons, icons, logos, or other images with uniform colors and tones.

.JPEG (Joint Photographic Experts Group) file format is the superior format for photographic or continuous-tone images, because JPEG files can contain millions of colors. As the quality of a JPEG file increases, so does the file size and the file download time. You can often strike a good balance between the quality of the image and the file size by compressing a JPEG file.

.PNG (Portable Network Group) file format is a patent-free replacement for GIFs that includes support for indexed-color, grayscale, and true-color images, and alpha channel support for transparency. PNG is the native file format of Macromedia Fireworks MX. PNG files retain all the original layer, vector, color, and effects information (such as drop shadows), and all elements are fully editable at all times. Files must have the .png file extension to be recognized as PNG files by Macromedia Dreamweaver MX.

.TIF, .TIFF Tagged Image File Format. Used to exchange documents between different applications and platforms.

.pbm Portable Bitmap file format. A lowest common denominator monochrome file format originally designed to make it reasonable to mail bitmaps between different types of machines. Now it serves as the common language of a large family of bitmap conversion filters.

.pcd Kodak Photo CD file format. Used to store scanned photos. Each .pcd file contains a number of scans of the same image at different resolutions.

.pct Picture format. Popular Macintosh graphics format used with page layout and graphics applications for transferring documents between applications. See .pic, .pict.

.pcx ZSoft IBM PC Paintbrush file format. One of the oldest bitmapped formats popularized by MS-DOS paint programs that first appeared in the early 1980’s.

.pdf Portable Document File format. Adobe document reader that allows portability. Often used on the Web for better control of page layout.

.pds Planetary Data System format. Created by the Planetary Branch of NASA to store solar, lunar, and planetary data collected both on Earth and by spacecraft.

.pic, .pict Picture file format. This format is popular with many image programs, including Lotus PIC Graphics, Micrografx Draw!, Pegasus Imaging Corporation, and Video Show.

.psd Native bitmap file format of the Adobe Photoshop graphical editing application.

.ps, .psid PostScript file format.

.psp Paint Shop Pro image file.

.pub Native file format of Microsoft Publisher, a program that aids in creating publishing materials.

.pict Picture file format. Popular Macintosh graphics format used with page layout and graphics applications for transferring documents between applications.

.pif Program Information File format. Stores additional information about executables that are foreign to the running multitasking system such as ressource usage, keyboard and mouse virtualization and hotkeys.

.pit Macintosh PackIt format. Archives that were pioneers in Macintosh file compression and archiving but today are obsolete.

.pnt MacPaint format. Similar to PC paint applications.

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