Records Management :: MERETI Default :: MERETI Acronym

Missouri Electronic Records Education and Training Initiative

Common Filename Extensions

A filename extension is the suffix or last set of characters that follow the period after the root or file name, i.e.rootname.ext, and is automatically added the first time a file is named and saved. Most filename extensions consist of three characters, although they can contain between one and five.

Extensions identify the type of data stored in the file to both users and the computer operating system. For example, a file named "letter.wpd" is a WordPerfect Document file, based on the ".wpd" file extension. Likewise, files ending in ".doc" indicate Microsoft Word documents. A file extension ensures that the computer will use the correct program to the open the file when you click on the filename.

Care should be taken when changing a file extension, as the computer may be unable to open the file. If for example a Microsoft Word file with a ".doc" extension is changed to a ".jpg" the file will not open because it is not an image.

Just as there thousands of software programs available, there are also thousands of filename extensions. The list below, from Workshop 3 Managing Electronic Records, includes some of the most commonly used file extensions.

For more comprehensive lists of file extensions, the following websites are recommended:


A | B - C | D | E - L | M - O | P | R - V | W - X


Application and File Type



Adobe Illustrator file.


Auto Interchange File Format (AIFF) Audio file.


ANSI text file.


Compressed file can be used with WinZip / Pkzip.


ASCII Text file


Microsoft FrontPage Active Server Pages. To open these files use your internet browser.


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Microsoft Windows 95 / Windows 98 Briefcase file.


Corel Word Perfect for Windows Backup file.


Corel Word Perfect for Windows Backup file.


Corel Word Perfect for Windows Backup file.


Corel Word Perfect for Windows Backup file.


Corel Word Perfect for Windows Backup file.


Corel Word Perfect for Windows Backup file.


Corel Word Perfect for Windows Backup file.


Corel Word Perfect for Windows Backup file.


Graphical Bit Mapped File used in Windows Paintbrush.


Microsoft Works Word Processor File.


Corel  Draw Bitmap master file


Corel Word Perfect for Windows Backup file.


Windows Calendar, Supercalculator4 file or Supercal spreadsheet.


Corel Draw Vector file.


Corel flowchart file


Windows Clipboard / Quattro Pro clip art / Clipper 5 compiler script


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Microsoft Word Windows/DOS / LotusWorks word processor Windows/DOS /PF S:First Choice Windows/DOS DOT MS Word Windows/DOS.


Text file and DOS Specification Info


Microsoft Word Template (Macro).


Micrografx draw/graph files.


Drawing interchange binary file


AutoCAD drawing interchange format file


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Word Perfect for Windows Equation file


Adobe Acrobat Forms Document.


Compressed zip file used with Apple Macintosh computers.


Micrografx draw/graph files.


IBM Writing Assistant Text file.




Graphic commonly used on the Internet and capable of being opened by most modern image editors.


Jazz spreadsheet


Lotus WordPro 96/97 file.


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Macintosh macpaint files.


Microsoft Outlook Express mailbox file. 


Compressed Archive file


Microsoft Project file.


Microsoft paint file format.


Lotus WordPro 97 smartmaster file


Make your point presentation file.


Olivetti text file


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Personal Address Book, file used with Microsoft Outlook.


Microsoft Paint & PC Paintbrush Windows/DOS.


Adobe PhotoDeluxe Image.


Adobe Acrobat Reader file.


WordPerfect spreadsheet file


Picture Publisher.


Picture Publisher.


Microsoft PowerPoint Slideshow.


Microsoft PowerPoint presentation.


Serif PagePlus publication.


Microsoft PowerPoint Packaged Presentation.


Adobe Photoshop image file.


Photoworks image file.


MGI PhotoSuite album file.


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Rich Text Format file.


StarOffice drawing file / SoftCuisine data archive


StarOffice spreadsheet


StarOffice presentation


SmartDraw library


Small archive


SmartDraw drawing


StarOffice chart file / Raw MIDI sample dump standard file 


SmartDraw template


Harvard (now Serif) presentation file


Apple Macintosh Compressed Archive file


Corel presentation / WordPerfect Slide Show / Show File


Multiplan file. / Microsoft Excel symbolic link.


Macromedia Flash file.


Microsoft project timeline fie.


Text file generally associated with UNIX.


VisiCalc Spreadsheet file.


Visio drawing.


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Quattro Pro Notebook 


Quattro Pro Spreadsheet


Microsoft Windows Batch File 


WordPerfect document / workbook


Lotus 1-2-3 worksheet


Lotus 1-2-3 for OS/2 worksheet


Lotus 1-2-3 all versions / LotusWorks spreadsheet.


Lotus 1-2-3 for Windows /Lotus 1-2-3 Rel.3.


Lotus 1-2-3 Rel lA,2.0,2.01, also file used with Microsoft Works.


MS Works word processor Windows/DOS.


Windows Write.


Lotus 1-2 31.0,1.01,1.1/ Symphony 1,1.01.


Symphony l.1,1.2,2 / Microsoft Write file.


Wang image file / Xerox image file


Microsoft Excel File.


Microsoft Excel File.


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Database Extensions



OS/2 program file


OS/2 database file


DBASE IV temporary file



ADA program file or UNIX library


Paradox database file / Progress database file


dBase II file


Microsoft Visual Foxpro database container


dBase II,III,III+,IV / LotusWorks database.


dBase database backup / Orcad schematic capture backup file


dBase IV compiled program file


Paradox memo


dBase database text file


Database file / DataBeam Image / MS Visual Foxpro Table


Q&A database


Microsoft Access Add-in / Microsoft Access 2 Workgroup.


Microsoft Access Database / Microsoft Access Application.


Microsoft Access Database File


Microsoft Access Blank Database Template


Microsoft Access Add-in Data


Microsoft Access Workgroup Information


dBase IV Multiple Index


Microsoft Access Wizard Template


Database file / Microsoft multimedia viewer file


Indexed file for most databases.


Oracle 7 data file


Oracle 7 data description


MikMod (UniMod) format file / Forecast Pro data file


Unknown file type, sometimes used when a file is received that cannot be identified


Text file generally associated with UNIX.


File used with some browsers such as Internet Explorer linking you to different web pages. Internet Shortcut.


Visio stencil.


Video Template / Truevision Vista graphic / Targa Bitmap/


Visio workspace file.


Windows system driver file allowing a driver direct access to the Windows Kernel, allowing for low level access to hardware.


Microsoft Works database


dBASE Form object


Paradox index file


Paradox index file


Paradox index file


Paradox index file


Paradox index file


Paradox index file


Paradox index file


Paradox index file


Paradox index file


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