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File Extensions Files end in a "dot" and a two, three, or four letter file extension. The file extension tells you what type of file it is, what program uses that extension, and is used by your operating system to launch the appropriate program. Select the first letter of the extension to jump to the appropriate section. A B C D E F G H I J K L M N O P Q R S T U V W X Y Z $ ~ 0 1 2 3 4 8 9 FTP - R - R8 - raw Graphic R8L - LaserJet Landscape font R8L - LaserJet Portrait font RA - RAM - RealAudio PROGRAM NAME: RealPlayer RAS - Raster graphic PROGRAM NAME: Sun RAW - 24-bit Graphic RBF - Data file PROGRAM NAME: RBASE rc - Run Command PROGRAM NAME: UNIX RC - Resource Compiler Script file PROGRAM NAME: BORLAND C++ / MS C++ RDX - Data file PROGRAM NAME: REFLEX REC - Record file PROGRAM NAME: SPRINT REC - Recorded macro PROGRAM NAME: MS WINDOWS REF - Cross reference REG - Registration data PROGRAM NAME: MS WINDOWS / REGEDIT REM - Annotation REP - Report file REQ - REQuest RES - Resource file PROGRAM NAME: DBASE IV RES - Compiler Resources PROGRAM NAME: BORLAND C++, MS C++ REX - REXX Program File REZ - Resources RF - Sun raster Graphic RFT - Revisable Format Text PROGRAM NAME: IBM DISPLAYWRITE RGB - Image file RI - PROGRAM NAME: LOTUS 1-2-3 RIA - Alpharel Group IV raster graphic RIB - Renderman graphic RIC - Roch FaxNet RIF - Bitmap PROGRAM NAME: Fractal Painter RIFF - Resource Interchange File Format - multimedia file equivalent to Amiga IFF format PROGRAM NAME: Microsoft RIX - Virtual screen RLA - Wavefront raster image RLB - Graphic PROGRAM NAME: HARVARD GRAPHICS FOR WINDOWS RLC - CAD Overlay PROGRAM NAME: Image Systems RLE - Run Length Encoded graphic RMI - Audio File PROGRAM NAME: RealPlayer RMK - Makefile PROGRAM NAME: RMAKE RND - Rendering Slide PROGRAM NAME: AUTOCADE AUTOSHADE RNL - GTX Runlength raster graphic ROL - Adlib Music (Roland) RPD - Database PROGRAM NAME: RAPIDFILE RPT - Report file RR - PROGRAM NAME: RAILROAD TYCOON RSL - Resources Library PROGRAM NAME: PC TOOLS RSP - ReSPonce text file RTF - Rich Text Format text file PROGRAM NAME: Microsoft RTF - Windows Help file script PROGRAM NAME: Microsoft RTL - Text file RUN - Script Tools - Program PROGRAM NAME: PC TOOLS Back to Top - S - S - Assembly language file PROGRAM NAME: Unix S3M - MOD music file S$$ - Temporary Sort file PROGRAM NAME: SPRINT SAM - Text file (Samna) PROGRAM NAME: AMI PRO 2.x , 3.x SAV - Backup file or Saved game SB - Audio file SBP - Text PROGRAM NAME: Superbase 4 SBP - IBM Storyboard graphic SC - Screen driver PROGRAM NAME: FRAMEWORK II SC - Source Code PROGRAM NAME: Paradox SC3 - Screen driver PROGRAM NAME: HARVARD GRAPHICS 3.0 SCC - Text file SCD - Graphic (SCODL Scan Conversion Object Description Language) SCH - PROGRAM NAME: MS SCHEDULE SCM - ScreenCam movie SCN - Compressed Screen format SCO - High Score SCP - Dial-up networking script SCR - Screen Layout PROGRAM NAME: dBASE SCR - Screen Snapshot SCR - Screen Saver PROGRAM NAME: MS WINDOWS SCR - Fax PROGRAM NAME: FAXVIEW SCR - Script SCT - Screen PROGRAM NAME: FOXPRO SCT - Screen Capture Text PROGRAM NAME: Lotus SCT - Script Tools - Program File PROGRAM NAME: PC TOOLS SCX - screen PROGRAM NAME: FOXPRO SDF - System File Format SDL - SmartDraw Library SEA - Compressed Archive File Macintosh SEA - Self-Extracting Archive PROGRAM NAME: Stuffit or Compact Pro SEC - Compressed Archive File SEC - Secret key ring PROGRAM NAME: PRETTY GOOD PRIVACY SEG - Segment (of a compressed file) PROGRAM NAME: Stuffit or Compact Pro SEP - TIFF bitmap SEQ - Animation (Atari) SET - Setup Configuration SF - WPS attribute storage PROGRAM NAME: OS/2 SFL - Printer Font (LaserJet landscape) PROGRAM NAME: VENTURA PUBLISHER SFP - Printer Font (LaserJet portrait) PROGRAM NAME: VENTURA PUBLISHER SFS - Scalable font SFT - ScreenFont PROGRAM NAME: CHIWRITER SGI - Graphic SH - Archive File PROGRAM NAME: SHAR SH3 - presentation PROGRAM NAME: HARVARD GRAPHICS 3.0 shar - UNIX shell archive PROGRAM NAME: Unshar SHB - Background file PROGRAM NAME: COREL SHOW SHG - Hypergraphic PROGRAM NAME: HOTSPOT EDITOR SHK - Compressed Archive File Apple II PROGRAM NAME: SHRINKIT SHM - Shell Macro PROGRAM NAME: WORDPERFECT SHR - Archive File PROGRAM NAME: SHAR SHTML - HTML file with embedded server-side includes (SSI's) SHW - Presentation / Show file PROGRAM NAME: HARVARD GRAPHICS 2.0 / COREL SHOW SI - Image file PROGRAM NAME: SoftImage sig - Signature - Can be attached to outgoing email, newsgroup postings, etc. It may include the name and contact information of the sender, ASCII art, favorite quotes, etc. SIK - Backup File SIM - Simulation PROGRAM NAME: MS FLIGHT SIMULATOR SIT - Compressed Archive File Macintosh PROGRAM NAME: STUFFIT SL - S-Lang Program File SLB - Slide library PROGRAM NAME: AUTOCAD SLC - Compiler SALT Script PROGRAM NAME: TELIX SLD - Slide PROGRAM NAME: AUTOCAD SLK - SYLK (Symbolic Link spreadsheet) PROGRAM NAME: MULTIPLAN SLT - SALT Script Application for Telix script source PROGRAM NAME: TELIX SM - SMALLTALK Program File SM - Text file PROGRAM NAME: SAMNA WORD SMM - Macro PROGRAM NAME: AMI PRO 2.x, 3.x SMP - Sample SND - Sound file SNG - Song (MIDI) SNM - Netscape mail SNO - Program File PROGRAM NAME: SNOBOL SP - Compressed Archive File PROGRAM NAME: SPLINT SPC - Program PROGRAM NAME: MS PULTIPLAN SPC - Temporary File PROGRAM NAME: WORDPERFECT FOR WINDOWS SPD - Bitstream Typefaces Font PROGRAM NAME: HARVARD GRAPHICS 3.0 SPD - Postscript printer mini driver SPD - Scalable font PROGRAM NAME: Speedo SPG - Glossary PROGRAM NAME: SPRINT SPL - Printer -Spool file PROGRAM NAME: MS WINDOWS SPL - Printer driver PROGRAM NAME: SPRINT SPL - Compressed Archive File PROGRAM NAME: SPLINT SPL - SamPLe SPM - PROGRAM NAME: WORDPERFECT SPP - Printer file PROGRAM NAME: SPRINT SPR - Document letter PROGRAM NAME: SPRINT SPR - Generated screen program PROGRAM NAME: FOXPRO SPS - screen driver PROGRAM NAME: SPRINT SPT - SPITBOL Program File spx - Screen Peace Extension SPX - Compiler screen Program PROGRAM NAME: FOXPRO SQB - Backup file PROGRAM NAME: SyQuest SQL - SQL Data SQZ - Compressed Archive File PROGRAM NAME: SQUEEZE SRC - SouRceCode - Used in the creation of INI files for configuration settings PROGRAM NAME: DATAFLEX and others SRF - Sun Raster File - Graphic ST - SMALLTALK Program File STD - State Transition Diagram Graphic PROGRAM NAME: PROSA STF - Compressed Archive File PROGRAM NAME: SHRINKTOFIT STF - Setup Information STM - State Transition Diagram Model PROGRAM NAME: PROSA STR - Structure list PROGRAM NAME: dBASE STS - Project status info PROGRAM NAME: MS C/C++ STY - Style sheet PROGRAM NAME: Ventura SUN - Graphic (Sun rasterfile) SUP - supplementary Dictionary file PROGRAM NAME: WORDPERFECT FOR WINDOWS SVD - Backup file PROGRAM NAME: MS WORD SVG - Backup file PROGRAM NAME: MS WORD SVS - Backup file PROGRAM NAME: MS WORD SW - Audio file (signed word) SWP - Backup file PROGRAM NAME: SPRINT SWP - Swap file PROGRAM NAME: DOS SY3 - Symbol file PROGRAM NAME: HARVARD GRAPHICS 3.0 SYD - Backup file PROGRAM NAME: MS WINDOWS SYSEDIT.EXE SYM - Symbol file PROGRAM NAME: HARVARD GRAPHICS / MS WINDOWS SDK SYM - Symbol table (diverse Compiler) SYN - Synonyms PROGRAM NAME: MS WORD 5 SYS - System file: Device driver, HardwareConfiguration SYW - Graphic (Symbol) PROGRAM NAME: HARVARD GRAPHICS FOR WINDOWS Back to Top - T - TAG - Query Tag Name PROGRAM NAME: DATAFLEX TAH - Help file for Turbo Assembler PROGRAM NAME: BORLAND C++ TAR - Compressed Archive File PROGRAM NAME: TAR TB1 - Font PROGRAM NAME: BORLAND TURBO C TB2 - Font PROGRAM NAME: BORLAND TURBO C TBK - Memo Backup PROGRAM NAME: dBASE IV / FOXPRO TBK - Toolbook (Asymetrix ToolBook) TC - Configurations file PROGRAM NAME: BORLAND C++ / TURBO C TCH - Help file PROGRAM NAME: BORLAND C++ / TURBO C TD - Configurations file PROGRAM NAME: TURBO DEBUGGER TDB - Database TDF - Outline Font TDH - Help file Turbo Debugger PROGRAM NAME: BORLAND C++ TDK - Keyboard record PROGRAM NAME: TURBO DEBUGGER TDS - Symbol table PROGRAM NAME: TURBO DEBUGGER TEM - Turbo Editor Macro Language PROGRAM NAME: BORLAND C++ TEM - Template (template) PROGRAM NAME: ICON AUTHOR TEX - TeX Text file TF - Configurations file PROGRAM NAME: TURBO PROFILER TFA - Area file PROGRAM NAME: TURBO PROFILER TFH - Help file Turbo Profiler PROGRAM NAME: BORLAND C++ TFS - Statistik PROGRAM NAME: TURBO PROFILER TGA - Truevision Targa Graphic THB - Graphic (Bitmap) THM - Database der Graphicen PROGRAM NAME: MS CLIPART GALLERY THS - thesaurus Dictionary file PROGRAM NAME: WORDPERFECT FOR WINDOWS TIF - Tagged Image File Format - Bitmap Graphic TMF - Tagged Font Metric file PROGRAM NAME: WORDPERFECT FOR WINDOWS TMO - ZTG global optimizer default output file PROGRAM NAME: ZORTECH C++ TMP - temporary File TMS - Script PROGRAM NAME: TELEMATE TOC - Table Of Contents Text file (ASCII) TP - Configurations file PROGRAM NAME: TURBO PASCAL TP3 - Template PROGRAM NAME: HARVARD GRAPHICS 3.0 TPH - Help file PROGRAM NAME: TURBO PASCAL TPL - Resident units PROGRAM NAME: TURBO PASCAL TPL - Template PROGRAM NAME: HARVARD GRAPHICS 2.0 TPP - Protected Mode Units PROGRAM NAME: TURBO PASCAL TPU - Turbo Pascal Unit (BGI) PROGRAM NAME: TURBO PASCAL TPW - Turbo Pascal Unit (BGI) PROGRAM NAME: TURBO PASCAL FOR WINDOWS TRE - Directory Tree PROGRAM NAME: PC TOOLS TRM - Terminal settings PROGRAM NAME: MS WINDOWS TRN - Translation PROGRAM NAME: QUATTRO TSP - Windows Telephony Service Provider TST - Printer -Test file PROGRAM NAME: WORDPERFECT FOR WINDOWS TTF - TrueType Font TUT - Tutorial TX8 - DOS-Text TXT - Text file TYM - Time Stamp program PROGRAM NAME: PAGEMAKER 4 & 5 Back to Top - U - UB - Audio file (unsigned byte) UI - User Interface PROGRAM NAME: SPRINT UL - uLAW Audio file ULD - Uploaded files PROGRAM NAME: PROCOMM PLUS UNX - Text file - UNIX specific Info UPD - Update file PROGRAM NAME: dBASE UPO - Compiled update file PROGRAM NAME: dBASE USP - Printer Font US-ASCII enhanced characters PROGRAM NAME: PAGEMAKER USR - User Database PROGRAM NAME: PROCOMM PLUS / TURBO C++ UU - Compressed Archive File ASCII PROGRAM NAME: UUENCODE UUE - Compressed Archive File ASCII PROGRAM NAME: UUENCODE UW - Audio file (unsigned word) Back to Top - V - VAL - Value (values) PROGRAM NAME: dBASE VAR - Variable PROGRAM NAME: ICON AUTHOR VBX - Visual Basic eXtension PROGRAM NAME: VISUAL BASIC VC - Spreadsheet file PROGRAM NAME: VISICALC VCX - Spreadsheet file PROGRAM NAME: VISICALC VEW - Viewfile PROGRAM NAME: CLIPPER 5 VGA - VGA screen driver PROGRAM NAME: Diverse VGA - VGA screen characters PROGRAM NAME: Diverse VGR - Graphic PROGRAM NAME: VENTURA PUBLISHER VID - screen driver PROGRAM NAME: WORD VID - Monitor control file PROGRAM NAME: MS-DOS Shell VMF - font characteristics PROGRAM NAME: VENTURA PUBLISHER VOC - Audio file VSD - Drawing PROGRAM NAME:VISIO VSS - Stencil PROGRAM NAME:VISIO VST - Truevision Vista Graphic VST - Template PROGRAM NAME:VISIO VUE - View PROGRAM NAME: dBASE IV / FOXPRO VW - Text file PROGRAM NAME: VOLKSWRITER VWR - File viewer file PROGRAM NAME: PC TOOLS VXD - Virtual Device driver Back to Top - W - W - Word chart PROGRAM NAME: APPLAUSE W30 - Printer Font (AST TurboLaser) PROGRAM NAME: VENTURA PUBLISHER W40 - Backup file from MS Windows 95 WAV - Waveform Audio file WBF - Windows Batch File WBK - Workbook PROGRAM NAME: WORDPERFECT FOR WINDOWS WCD - Macro token list PROGRAM NAME: WORDPERFECT FOR WINDOWS WCM - File transmission file PROGRAM NAME: MS WORKS WCM - Macro PROGRAM NAME: WORDPERFECT FOR WINDOWS WDB - Database PROGRAM NAME: MS WORKS WFN - Graphics: Symbols and Fonts PROGRAM NAME: COREL DRAW WFX - Data file PROGRAM NAME: WINFAX WID - Width table PROGRAM NAME: VENTURA PUBLISHER WIN - Window PROGRAM NAME: dBASE / FOXPRO WK1 - Spreadsheet file PROGRAM NAME: LOTUS 1-2-3 2.x / SYMPHONY WK3 - Spreadsheet file PROGRAM NAME: LOTUS 1-2-3 3.x WKB - Document PROGRAM NAME: WORDPERFECT FOR WINDOWS WKE - Spreadsheet file PROGRAM NAME: LOTUS 1-2-3 (Student version) WKQ - Spreadsheet file PROGRAM NAME: QUATTRO PRO WKS - Spreadsheet file PROGRAM NAME: Lotus 1-2-3 / SYMPHONY / MS Works WKS - Workspace PROGRAM NAME: XLISP WMC - Macro PROGRAM NAME: WORDPERFECT FOR WINDOWS WMC - Text file PROGRAM NAME: WORDMARC WMF - Vector graphic (Windows MetaFile) PROGRAM NAME: MS WINDOWS WN - Text file PROGRAM NAME: WRITE NOW WNF - Outline Font PROGRAM NAME: COREL DRAW WOA - Swap file PROGRAM NAME: MS WINDOWS WP - Text file PROGRAM NAME: WORDPERFECT 4.2 WP5 - Text file PROGRAM NAME: WORDPERFECT 5 WPD - Screen driver PROGRAM NAME: WORDPERFECT WPF - Text file PROGRAM NAME: WORDPERFECT WPG - WordPerfect Graphic Bitmap PROGRAM NAME: DRAWPERFECT WPK - Macros PROGRAM NAME: WORDPERFECT FOR WINDOWS WPM - Macros PROGRAM NAME: WORDPERFECT WPS - Text document PROGRAM NAME: MS WORKS WQ! - Compressed Spreadsheet file PROGRAM NAME: QUATTRO PRO WQ1 - Spreadsheet file PROGRAM NAME: QUATTRO PRO WR1 - Spreadsheet file PROGRAM NAME: SYMPHONY WRD - Template PROGRAM NAME: CHARISMA WRI - Text file PROGRAM NAME: WINDOWS WRITE WRK - Spreadsheet file PROGRAM NAME: SYMPHONY 1.0 WRP - Compressed Archive File Amiga PROGRAM NAME: WARP WRS - Windows Printer driver PROGRAM NAME: WORDPERFECT FOR WINDOWS WS - Text file PROGRAM NAME: WORDSTAR 5.0+6.0 WS2 - Text file PROGRAM NAME: WORDSTAR 2000 WSD - Data file PROGRAM NAME: WORDSTAR WST - Text file PROGRAM NAME: WORDSTAR Back to Top - X - X - LEX Program File X01 - Secondary index PROGRAM NAME: PARADOX X02 - Secondary index PROGRAM NAME: PARADOX X03 - Secondary index PROGRAM NAME: PARADOX X04 - Secondary index PROGRAM NAME: PARADOX X05 - Secondary index PROGRAM NAME: PARADOX X06 - Secondary index PROGRAM NAME: PARADOX X07 - Secondary index PROGRAM NAME: PARADOX X08 - Secondary index PROGRAM NAME: PARADOX X09 - Secondary index PROGRAM NAME: PARADOX XAB - Address Book PROGRAM NAME: XENIX MAIL XBM - Bitmap Graphic XFN - Printer Font PROGRAM NAME: VENTURA PUBLISHER XFT - 24 Pin Printer Font PROGRAM NAME: CHIWRITER XLA - Addin: Macro PROGRAM NAME: MS EXCEL XLB - PROGRAM NAME: MS EXCEL XLC - Chart Diagram PROGRAM NAME: MS EXCEL XLL - Excel Dynamic Link Library PROGRAM NAME: MS EXCEL XLM - MacroTemplate PROGRAM NAME: MS EXCEL XLS - Spreadsheet file PROGRAM NAME: MS EXCEL XLT - MasterTemplate PROGRAM NAME: MS EXCEL XLT - Translation table PROGRAM NAME: LOTUS 1-2-3 / SYMPHONY XLW - Workspace PROGRAM NAME: MS EXCEL XPM - Graphic XQT - Macro sheet PROGRAM NAME: SUPERCALC XRF - Cross reference XY - Text file PROGRAM NAME: XY WRITE XY3 - Text file PROGRAM NAME: XYWRITE III XYW - Text file PROGRAM NAME: XYWRITE III Back to Top - Y - Y - Compressed Archive File Amiga PROGRAM NAME: YABBA YAL - Click Art PROGRAM NAME: Arts & Letters Y01 - Secondary index PROGRAM NAME: PARADOX Y02 - Secondary index PROGRAM NAME: PARADOX Y03 - Secondary index PROGRAM NAME: PARADOX Y04 - Secondary index PROGRAM NAME: PARADOX Y05 - Secondary index PROGRAM NAME: PARADOX Y06 - Secondary index PROGRAM NAME: PARADOX Y07 - Secondary index PROGRAM NAME: PARADOX Y08 - Secondary index PROGRAM NAME: PARADOX Y09 - Secondary index PROGRAM NAME: PARADOX Back to Top - Z - Z - Unix Compressed Archive File ASCII PROGRAM NAME: COMPRESS ZIP - Compressed Archive File PROGRAM NAME: PKZIP ZOM - Compressed Archive File Amiga PROGRAM NAME: ZOOM ZOO - Compressed Archive File PROGRAM NAME: ZOO ZOO - Zoo Assistants - A special file used by Claris Works Assistants to guide the user through a task by asking a series of questions and then use the answers to perform a task. PROGRAM NAME: Claris Works ZVD - ZyXEL Voice file PROGRAM NAME: Z-FAX Click our logo below to E-Mail us ComputerHelpOnline@angelfire.com