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List of Data File Formats Starting with the Letter U

List of Data File Formats Starting with the Letter "U"

.uax Unreal Audio file
.ub Audio file (unsigned byte)
.uc2 Compressed file archive created by UltraCompressor II (uc2.zip)
.ucn New compressed file archive created by UltraCompressor II
.ucs Universal Classification Standard Database file
.udc Acrobat Spelling file
.udf Filter (Photostyler)
.udl MS Data Link
.uds Sierra Generations Family file
.ue2 Encrypted file archive created by UltraCompressor II
.ufo Ulead PhotoImpact Graphic file
.uha UHARC Compressed Archive file
.uhs Universal Hint System (binary file)
.ui Espire source code file (Geoworks UI Compiler)

User interface (Sprint)
.uif MagicISO Disc Image file

Long prompts for windows (WordPerfect for Win)
.uih Espire header file (Geoworks UI Compiler)
.uis WindowBlinds (Copyright Neil Banfield & Stardock.net, Inc.)
.ul Ulaw audio file
.uld Information about uploaded files (Procomm Plus)
.ult Music (UltraTracker)
.umb Backup file (MemMaker)
.umd Universal Media Disc file
.umf Stockmoves, MOTEK BV
.umx Unreal music file
.uni Unimod music module (MIKMOD)

Datafile (Forecast Pro)
.unl Garmin Unlock file
.unq Fax View file
.uns2 Ultra Notes Backup file
.unx Text file containing UNIX specific info
.upd Program update info

Update data (dBASE)
.upg Firmware Upgrade file
.upo Compiled update data (dBASE)
.upx ULead Photo Express Saved Image file
.url Uniform Resource Locator (Internet shortcut)
.urls GetRight URL List file
.usb D-Link FM Radio Update

USB Protocol Analyzer Trace
.user Visual Studio User Options file
.usp Printer font with USASCII extended character set (PageMaker)
.usr User database file (Procomm Plus - Turbo C++ tour)
.utf AOL Updating Files
.utl Sound file
.utx Unreal Engine Texture file

Unicode file
.uu Compressed ASCII file archive created by UUDE/ENCODE
.uue Compressed ASCII file archive created by UUENCODE (uuexe515.exe)
.uvf CSV (comma separated value) format. Used by Netica
.uvr Ulead Cool 360 Viewer file
.uw Audio file (unsigned word)
.uwl WordPerfect User Word List file

List of Data File Formats Starting with the Letter T

List of Data File Formats Starting with the Letter "T"

.t Tads source

Tape Archive (tar) without compression

Tester symbol table (ReaGeniX code generator)

File extension for a Turing open source file
.t$m AVG Internet Security Temporary file
.t04 TaxCut 2004 file
.t05 TaxCut 2005 Tax Return
.t06 TaxCut 2006 Tax Return
.t07 TaxCut 2007 Tax Return
.t08 TaxCut 2008 Tax Return
.t09 H&R Block At Home 2009 Tax Return
.t10 H&R Block At Home 2010 Tax Return
.t11 H&R Block At Home 2011 Tax Return
.t12 H&R Block At Home 2012 Tax Return
.t2 Textease 2000 file
.t44 Temporary file for Sort or Index (dBASE IV)
.t64 Program (C64S emulator)
.ta0 TaxAct file
.tab Guitar Tablature file

MapInfo Table

Diabetes Mentor file
.tag Query tag name (DataFlex)
.tah Turbo Assembler Help file (Borland C++)
.tal Text illustration (TypeAlign)
.tao IsoBuster file
.tar Compressed file archive created by TAR (pax2exe.zoo)
.tax TurboTax file
.taz Compressed ASCII file archive created by TAR and COMPRESS (.tar.Z)
.tb1 Font file (Borland Turbo C)
.tb2 Font file (Borland Turbo C)
.tbf Fax (Imavox TurboFax)
.tbh Mah Jongg for Windows Tile Set
.tbk Memo backup (dBASE IV - FoxPro)

Toolbook (Asymetrix ToolBook)
.tbl Graphics (native format) (Adobe PageMaker TableEditor)

Table of values (OS/2)
.tbs Text elements ?? (Textbausteine) (MS Word)
.tbx Table (Project Scheduler 4)
.tc Configuration (Turbo C - Borland C++)
.tch Turbo C Help file (Borland C++)
.tcl Tool Command Language source code (Swat)
.tcp 3D Topicscape (exported inter-Topicscape topic link)
.tcw Drawing (TurboCAD for Windows)
.td Configuration file (Turbo Debugger for DOS)
.td0 Disk image file (Teledisk)
.td2 Configuration file (Turbo Debugger for Win32)
.tdb Database (TACT)

eBay Turbo Lister file
.tdf Font (TheDraw)

Typeface definition file (Speedo)
.tdh Help file (Turbo Debugger)
.tdk Keystroke recording file (Turbo Debugger)
.tds Symbol table (Turbo Debugger)
.tdt ASCII Data File in CSV Format

Daylight Fingerprint Data file

Thor Datatree file
.tdw Configuration file (Turbo Debugger for Windows)
.tee TeeChart Office graphic
.tef Fax (Relisys TEFAX)
.tel Host file (Telnet)
.tem Turbo Editor Macro Language script (Borland C++)

Input template (IconAuthor)
.temp Temporary file
.test Test File Extension
.tex LaTeX Source Document file

Tex text file (Scientific Word)

Datasheet (Idealist)
.text ASCII Text file
.tf Configuration (Turbo Profiler)

Configuration (TinyFugue)
.tfa Area file (Turbo Profiler)
.tfc Catalogue file (Tobi's Floppy Cataloguer)
.tfh Help file (Turbo Profiler)
.tfm Tex Font Metric file (TeX)

Tagged font metric file (Intellifont)
.tfs Statistics (Turbo Profiler)
.tfw ArcView World File For TIF Image

Digital Raster Graphic World
.tg1 Project file (On Target)
.tga Truevision Targa bitmap graphics
.tgz Compressed file archive created by TAR and GNUzip (.tar.gz)
.thb KinuPix Skin
.thd Thread
.thm Thumbnail Image file

Microsoft Clipart Gallery database

Serif DrawPlus Theme
.thn Graphics Workshop for Windows Thumbnail
.ths Thesaurus dictionary (WordPerfect for Win)
.tib Acronis True Image file
.tif Tagged Image File Format bitmap graphics (PageMaker - CorelDRAW)
.tiff Tagged Image File Format
.til Fuzzy logic knowledge base (Togai InfraLogic Fuzzy-C Compiler)
.tim Playstation Game Texture Image

The Incredible Machine Level File
.tis Tile set (MahJongg 3.0)
.tix ASA for UNIX Terminfo Extension file

DivX file

Hybrid Graphics file

Tix Widgets
.tjl Backup file (VAXTPU editor)
.tlb OLE Type Library

Reference table (Bubble Chamber)

Text library (VAX)

Type library (Visual C++)
.tlc Compiled Tool Command Language source code (Swat)
.tlp Project (TimeLine)
.tlt Trellix Web Design file
.tmb Timbuktu Pro Connection Document
.tmd Document (TextMaker)
.tmf Tagged Font Metric file (WordPerfect for Win)
.tmo Ztg global optimizer default output file (Zortech C++)
.tmp Temporary file
.tmpl eMule Web Interface Template file
.tmq TestMaster file
.tms Script (Telemate)
.tmv Template (TextMaker)
.toc Table Of Contents

PSP Audio file
.tol Kodak Photoenhancer
.TOPC TopicCrunch project file for saving and resubmitting SEO searches
.tos Self-extracting file archive (Atari ST)
.tp Configuration (Turbo Pascal)

Session-state file (Turbo Profiler)

GUI template file for components written in C (Ternion)
.tp3 Template (Harvard Graphics 3.0)
.tpb Downloadable PCL Soft font file backup (HiJaak)
.tpf Downloadable PCL Soft font file (HiJaak)
.tph Help file (Turbo Pascal)
.tpi Microsoft Test file
.tpl Document Template file

Resident units library (Turbo Pascal)

Template (Harvard Graphics 2.0)
.tpp Protected Mode Units (Borland Pascal 7.0)

Teleport Pro Project file

GUI template file for components written in C++ (Ternion)
.tps Clarion for Windows data file
.tpu Turbo Pascal Unit (BGI) (Turbo Pascal)

Command file (VAXTPU editor)
.tpw Session-state file (Turbo Profiler for Windows)

Turbo Pascal Unit (BGI) (Turbo Pascal for Windows)
.tpz Compressed file archive created by TAR and GNUzip (.tar.gz)
.tr Session-state settings (Turbo Debugger for DOS)

Man page input suitable for troff -man (cawf2.zip)
.tr2 Session-state settings (Turbo Debugger for Win32)
.trace ECXpert Debugging file

TcpDump Output file

Telcordia Software Visualization and Analysis Toolsuite

WebSTAR Mail Server Error file

Zope 3 Strace Log
.trc Debug support file (Power CTrace)
.tre Directory tree file (PC-Tools)
.trg Symantec LiveUpdate file
.tri Trigram file
.trk Kermit Script file

Mixman Studio Track

Train Dispatcher Railroad Centgralized Traffic Control Simulation

Magellan "MapSend"- series GPS 'track' data file
.trm Terminal settings (Windows 3.x)
.trn Translation support file (Quattro)
.trp Tripmaker file

High Definition Video Transport Stream file
.trs Executable file (Micrografx)
.trw Session-state settings (Turbo Debugger for Windows)
.trx Router Firmware file

Emerald PC Authorize Batch Transaction file
.ts Transport Stream file
.tsk Skins for Pocket PC PDAs

PhotoImpact Quick Command
.tsp Windows Telephony Service Provider
.tst Printer test file (WordPerfect for Win)
.tsv Tab Separated Value file
.tt10 Turbotax 2010 Return file
.tta The True Audio Codec file
.ttc OpenType font file
.ttf Truetype Font file
.tub PaintShop Pro Tube file
.tut Tutorial
.tv Table view settings (Paradox)
.tv1 Overflow file above insert point in Doc 1 (WordPerfect for Win)
.tv2 Overflow file above insert point in Doc 2 (WordPerfect for Win)
.tv3 Overflow file above insert point in Doc 3 (WordPerfect for Win)
.tv4 Overflow file above insert point in Doc 4 (WordPerfect for Win)
.tv5 Overflow file above insert point in Doc 5 (WordPerfect for Win)
.tv6 Overflow file above insert point in Doc 6 (WordPerfect for Win)
.tv7 Overflow file above insert point in Doc 7 (WordPerfect for Win)
.tv8 Overflow file above insert point in Doc 8 (WordPerfect for Win)
.tv9 Overflow file above insert point in Doc 9 (WordPerfect for Win)
.tvf Table view settings (dBASE)
.tvo TeveoLive
.tvp NVIDIA Graphic Card Update file
.tvr Navicat for MySQL file
.tvt RealPlayer
.txd Grand Theft Auto 3 Texture file

Letters Direct
.txf Compressed file archive created by TAR and FREEZE (.tar.f)
.txi Support file (TeX)
.txl Genesis3D Texture file
.txt Text file
.tym Time Stamp (PageMaker 4)
.tz Compressed file archive created by TAR and COMPRESS (.tar.Z)
.tzb Compressed file archive created by TAR - COMPRESS - BTOA (.tar.Z.btoa)

List of Data File Formats Starting with the Letter S

List of Data File Formats Starting with the Letter "S"

.s Assembly source code file (Unix)

Scheme source code file
.s$$ Temporary sort file (Sprint)
.s3m Music (16 channels) (Scream Tracker 3.0)
.sac Shared Asset Catalog (Adobe)
.saf MusicMatch Jukebox Secure Audio file

Safe File Encryption (Helix Software)

Twelve Ghosts file
.sah SETI@Home data file
.sal Datafile (SORITEC)
.sam Text file (Samna - Lotus Ami/Ami Pro)
.sar Compressed file archive created by SAR (sar1.zip)
.sas SAS System program
.sas7bcat SAS System file catalog
.sas7bdat SAS System data set
.sas7bndx SAS System index
.sas7bpgm SAS System Stored Program
.sas7bvew SAS Data Set View
.sas7mdb SAS System multidimensional database
.sat Standard ACIS Text file
.sav Backup file (saved file)

Configuration

Saved game situation (eg. NetHack)
.sb Audio file (signed byte)
.sbc Sagebrush Corporation Spectrum CIRC/CAT Report
.sbd Storyboard (Storyboard Editor)
.sbi Sound Blaster Instrument file (Creative Labs)
.sbj Micrografx Clipart or Palette file
.sbn ArcView file (GIS)
.sbp Dml program (Superbase 4)
.sbr Support file (Source Browser)
.sbs SWAT HRU Output file
.sbt Notes related to record (Suberbase 4 Windows)
.sbx ArcView file (GIS)
.sc Pal script (Paradox)

Display driver (Framework II)
.sc3 Renamed dBASE III screen mask file (dBASE IV)

Screen device driver (Harvard Graphics 3.0)
.sca Datafile (SCA)
.scc Text file
.scd Scodl Scan Conversion Object Description Language graphics
.scf Multimedia show (ScoreMaker)

Spelling checker configuration (Symphony)

Windows Explorer command file
.sch Project schedule (Schedule Publisher)

Schematics file (ORCAD)
.sci System Configuration Information

Fax (SciFax)
.scm Scheme source code file

ScreenCam Movie file

SchematicMaker file
.scn Screen file (Kermit)

Pinnacle Studio Scene file
.sco High score
.scp Script (BITCOM)
.scr Debug source code file (DOS Debug)

Screen - screen snapshot (dBASE IV - Procomm Plus)

Screen font (LocoScript)

Screen saver (Windows 3.x)

Script (Kermit - 1st Reader)
.sct Screen memo (FoxPro)

Windows Script Component
.scx Bitmap graphics (ColorRIX)

Chart (Stanford Chart)

Screen (FoxPro)
.scy Security file (ReaGeniX)
.sda Fidonet's Software Distribution Network file archive description
.sdc StarOffice Spreadsheet
.sdd StarOffice Presentation
.sdf System Data Format file (fixed lenght ASCII text)
.sdi Software Distribution Network Info file

Single Document Interface file
.sdn Software Distribution Network compressd file archive (pak251.exe)
.sdr SmartDraw file
.sds Chart Application Document file
.sdt SmartDraw Template

Dungeon Keeper 2 Archive

Theme Park World Archive
.sdu Edwards Systems Technology file
.sdw StarOffice Text

Raw Signed DWord Data

Lotus WordPro Graphic
.sea Self-Extracting compressed Macintosh file Archive
.sec CyberPaint animation file (sequence)

Secret key ring file (Pretty Good Privacy RSA System)

Secured animation file (Disney Animation Studio)
.sed Self Extraction Directive file
.sep Printer separator page
.seq Atari animation file

Sequential Instruction File (Bubble Chamber)
.ses Session info (Clarion Modula-2)
.set Configuration (1st Reader)

Driver sets created by Install (Symphony)

Setup options file
.sf Ircam Sound File (CSound package - MixView sound sample editor)

Wps attribute storage (OS/2 WorkPlace Shell) wp_root.sf
.sf2 Creative Labs Soundfont file
.sfb HP Soft Font file
.sfc System File Checker file
.sff Fritz Fax-Print file

Stage Scene file

Structured Fax Format
.sfi Graphics (SIS Framegrabber)

Printer font (HP LaserJet landscape) (Ventura Publisher)
.sfl Pcl 4 bitmap font (landscape) (Intellifont) (Ventura Publisher)
.sfn Font (SPX)
.sfo CuteFTP Search file
.sfp Pcl 4 bitmap font (portrait) (Intellifont) (Ventura Publisher)
.sfs Pcl 5 scalable font file (Intellifont)
.sft Screen font (ChiWriter)
.sfv QuickSFV/WinSFV Checksum file

Simple File Verification (Easy SFV Creator)
.sfw Seattle Film Works file
.sfx Self Extracting Archive file
.sg1 Graphics (Stanford Graphics)
.sgf Document with graphics (Starwriter)

Smart Game Format

Sonique Skin
.sgi Graphics (IRIS - Silicon Graphics)
.sgm Standard Generalized Markup Language file

Run-Time Help Files

SoftQuad XMetaL File
.sgn Sierra Print Artist Sign
.sgp Statistics (STATGRAPHICS Plus)
.sgt Save/get keyboard macro (Signature)
.sh Unix shell script

Unix ASCII file archive created by SHAR (unshar.zip)
.sh3 Presentation (Harvard Graphics 3.0)
.sha Shell Archive file
.shb Background (CorelShow)
.shd Microsoft Windows Shadow file

Print Spooler Shadow file
.shg Segmented-graphics bitmap
.shk Compressed Apple II file archive created by SHRINKIT
.shm Shell macro (WordPerfect Library)
.shn Shorten audio compression file
.shp Shape file and source file for text fonts (AutoCAD)
.shr Unix ASCII file archive created by SHAR (unshar.zip)
.shs Microsoft Word or Excel scrap file which is created when you drag and drop selected text
.shtml HTML File with Server Side
.shw Presentation (Harvard Graphics 2.0 - CorelShow)

Slide show (WordPerfect Presentations)
.shx Shape entities (AutoCAD)
.sid Commodore64 Music file

LizardTech MrSID Photo
.sif Setup Installation Files info (Windows NT Setup)
.sig Current program settings (Signature)

PrintShop Sign file

Signature file (PopMail)
.sik Backup file (Sicherungskopie) (MS Word)
.sim Aurora

PC Finder 2002C

PowerDVD file

Simulation (various)
.sis SymbianOS Installer file
.sit Compressed Macintosh archive created by STUFFIT (unsit30.zip)
.sitx Stuffit SITX Compressed File
.skb SketchUp software file (3D Design Tool)
.skf Autosketch file
.skin Skin file
.skm Google Sketchup Texture file
.skn Interface skins images (FileWrangler, SecurDesk!, SecurDesk! LV, ZipWrangler)

Symbian OS Skin File
.skp Sketchup software component (3D Design Tool)
.sl S-Lang source code file
.slb Slide library (AutoCAD)
.slc Compiled SALT script (Telix)
.sld Slide (AutoCAD)
.slf BitDefender file

Symantec Licence file
.sli Slide (MAGICorp Slide Service)
.slk Sylk Symbolic Link format data file (MultiPlan)
.sll Sound data file
.sln Microsoft Visual Studio Solution file
.slt Salt Script Application Language for Telix script source (Telix)
.sm Smalltalk source code file

Maillist (SoftSpoken Mailer)

Script (ScriptMaker)

Text file (Samna Word)
.smc Super Nintendo Game-console ROM Image
.smd StarOffice Mail
.smf Fax (SMARTFAX)
.smi RealPlay SMIL file

Self Mounting Image file
.smil Synchronized Multimedia Integration Language file
.smk Compressed File (Smacker)
.smm Macro (Ami Pro)
.smp Sample (sound file)
.sms Microsoft Package Definition file

Sega Master System Emulator
.smt Text file (Smart Ware II)
.smtmp SMTMP Virus
.snd Digitized sound file (Macintosh/ATARI/PC)
.sng Song (midi sound) (Midisoft Studio - Prism)
.snm Netscape mail
.sno Snobol4 source code file
.snp CoffeeCup HTML Editor Snippet

Computer Eyes Video Output

Microsoft Access Report Snapshop file

Snapview Shapshot
.snx Mirage Microdrive Snapshot Extended Version

Second Nature Software Graphic

StarCraft Saved file
.so Apache Module file
.sol Flash shared object file

Solution eg. game walkthroughs
.som Network serial numbers (Quattro Pro)

Sort information (Paradox)
.son Song (SBStudio II)
.sou Sound data (sound tool)
.sp Compressed file archive created by SPLINT (unix)
.spa Macromedia FutureSplash file

Smart Protocol Analyzer Real Time Communication Data

SmartPA Saved Capture file

Thermo Nicolet OMNIC file
.spc Program (MS Multiplan)

Temporary file (WordPerfect for Win)

Super Nintendo SPC700 sound file
.spd Scalable font (Speedo) (Harvard Graphics 3.0)
.spf Slide presentation file (EnerGraphics)
.spg Glossary (Sprint)
.spi Graphics (Siemens and Philips scanner)
.spi InConSoft Ltd. Sim-Path system files
.spl Compressed file archive created by SPLINT (splint.arc)

Customized printer driver (Sprint)

Personal spell dictionary (Signature)

Microsoft Windows Print Spool file

Sample
.spm Data (WordPerfect) wp{wp}.spm
.spo Statistical Program (SPSS)
.spp Printer file (Sprint)
.spr Document letter (Sprint)

Genarated screen program (FoxPro)

Sprite
.sps Spssx source code file (VAX/VMS)

Screen driver (Sprint)
.spt Spitbol source code file

Support file (MITAC disk/system management utility pack)
.spv InConSoft Ltd Sim-Path vehicle file
.spw Worksheet (SigmaPlot)
.spx Compiled screen program (FoxPro)
.sql SQL report or query
.sqlite SQLite Database file
.sqm Service Quality Monitoring file

Logfile for Windows Live Messenger
.sqz Compressed file archive created by SQUEEZE (sqz1083e.exe)
.src Source (DataFlex)
.srf Sun Raster File graphics

Sony RAW Image file
.srp Script (QuickLink)
.srt BSplayer Subtitle file

Omron CX-Supervisor

SDR99 Speech Recognition Task Speech Recogniser Transcript
.ss Bitmap graphics (Splash)
.ssa Subtitles
.ssb SmartSync Pro
.ssd Datafile (SAS/PC)
.ssf Snagit file

Enable Spreadsheet file
.ssm RealPlayer Standard Streaming Metafile
.ssp Datafile (SAS Transport)
.st Smalltalk source code file (Little Smalltalk)

Instrument library (Scream Tracker)

Stamp (NeoPaint)
.st3 MIDI Karaoke file
.sta Adobe Photoshop Match Colour Image Statistics file

Saved state (Reflection 4.0)

Stack (Spinmaker Plus)
.stb Stub library (Genus GX Kernel)
.std State Transition Diagram graphic file (Prosa)

Standard (something..) (LocoScript)
.stf Compressed file archive created by SHRINKTOFIT
.stg ActiveSync (Microsoft) Backup file

Statistica Graphics File
.stl C++ Standard Template Library
.stm State Transition Diagram model file (Prosa)

Music (Scream Tracker)
.stn ArcView Geocoding Standardization file

STiNG file
.sto Pascal stub OBJ file (Genus GX Kernel)
.stp Sharepoint Web Site Template File

PageKeeper Packed Storage file

DART Pro 98 system settings

AP203 Step file
.str Structure list object file (dBASE Application Generator)
.sts Project status info (MS C/C++)

Song format (Scream Tracker)
.stt Automap Template

SureThing CD Labeler Template file
.stu Tarantella Enterprise 3 3270 Emulator Style file

xyALGEBRA file
.stw Data file (SmartTerm for Windows)
.stx Electronic book (SmarText)

Tax form (CA-Simply Tax)
.sty Style library or sheet (many text and graphics programs)
.sub CloneCd related file
.sui Suit library (Simple User Interface Toolkit)
.sum Summary
.sun Sun rasterfile graphics
.sup Supplementary dictionary (WordPerfect for Win)
.sv4 RollerCoaster Tycoon Saved Game
.svd Autosave file for document (MS Word)
.svg Autosave file for glossary (MS Word)

Scalable Vector Graphics File format
.svgz Compressed Scaleable Graphic file
.svp WISCO Survey Power

Sonique Visual Plugin file

SwiftView Command file
.svs Autosave file for style sheet (MS Word)
.sw Audio file (signed word)
.swd Storybook file

Sabiston Textbook
.swf ShockWave Flash object
.swg Swag packet (SWAG Reader)
.swi Swish Data file
.swk Swapkeys Keyboard File
.swp Document backup (Sprint)

Swap file (DOS)
.sxc StarOffice / OpenOffice Spreadsheet file
.sxw OpenOffice.org Writer 6.0 text file

StarOffice Word Document file
.sy1 Smartpix symbol library (Ami Pro)
.sy3 Symbol file (Harvard Graphics 3.0)
.syd Backup of startup files created by QEMM (?) autoexec.syd
.sym Precompiled headers (Borland C++)

Program symbol table (many compilers and linkers)

Symbol file (Harvard Graphics 2.0)
.syn Sdsc Synu image file (SDSC Image Tool)

Synonym file (MS Word 5)
.sys Datafile (SYGRAPH - SYSTAT - SPSS/PC)

System file - device driver or hardware configuration info (DOS)
.syw Graphics symbols (Harvard Graphics Win)
.szc Windows Mobile 5 (Pocket PC)