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# 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

U File Extensions

File types with extensions that start with the letter U

Extension File Type File Description
.uRaster ImageSubsampled Raw YUV Image
.uGameUnreal Tournament Class Package
.uAudioAU Audio File
.u10DataUFile 2010 Tax Return
.u3d3D ImageUniversal 3D File
.u3iTextU3 Application Information File
.u3pExecutableU3 Smart Application
.uaxAudioUnreal Audio Package
.ubAudioUnsigned Byte Audio File
.ubjDataUniversal Binary JSON File
.ucGameUnrealScript Class
.uc2CompressedUltraCompressor 2 Archive
.uccapilogDataMicrosoft UCC API Log File
.ucfWebWebEx Media File
.uciBackupUFS Explorer Backup File
.ucmGameCrazy Machines Model File
.uctSettingsUC Browser Theme File
.udDataOmniPage User Dictionary
.udbDatabaseDynamics AX User Database File
.udcDataAdobe InDesign User Dictionary
.udcxSettingsUniversal Data Connection File
.udebDataDebian Package File
.udfDisk ImageUniversal Disk Format File
.udfExecutableExcel User Defined Function
.udkGameUnreal Engine Map File
.udlDatabaseMicrosoft Universal Data Link File
.udsMiscNetBackup UNIX Domain Socket File
.udsDataSierra Generations File
.udsDataUniform Data System File
.ufoRaster ImageUlead File Object
.ufrVector ImageUltra Fractal File
.ufsDisk ImageFreeBSD Unix File System File
.ufs.uzipCompressedCompressed Unix File System File
.uhaCompressedUHarc Compressed Archive
.uhtmlWebUC Browser Saved Webpage
.uiDeveloperUser Interface File
.uibakDisk ImageUltraISO Backup Disk Image
.uifDisk ImageUniversal Image Format Disc Image
.uisSettingsWindowBlinds User Interface Specification
.ukxGameUnreal Animation Package
.ulawAudioRaw u-Law Audio File
.ulfDataUniversal List File
.ulsMiscNetMeeting User Location Service File
.ultAudioUltraTracker Module
.ulwAudiou-Law Audio File
.ulzDataUSBlyzer Data Capture File
.umfDataMediaHolder Universal Media Format File
.umlDeveloperUML Data Object Model
.umlclassDeveloperUML Class Model
.umodGameUnreal Tournament Module File
.umxGameUnreal Music Package
.unauthTextSiteMinder Unauthorized Message File
.uniAudioMikMod UniMOD Module
.unityGameUnity Scene File
.unity3dGameUnity Web Player File
.unitypackageDataUnity Package File
.unkMiscUnknown File
.unknownMiscUnknown File Type
.unlMiscGarmin Unlock File
.unrGameUnreal Level Map
.untCADAutoCAD Unit Definition File
.unxTextUnix Text File
.uopGameUltima Online Patch File
.updTextProgram Update Information
.updateDataISAPI Update File
.updatrGameiConomy Update File
.upfSettingsMicroStation User Preferences File
.upfCADUnified Power Format File
.upkGameUnreal Engine 3 Package
.upoiDataiGO Points of Interest File
.uprDataFractal Parameters File
.uprDataFileMaker User Dictionary
.upxExecutableUltimate Packer for eXecutables File
.uqmGameThe Ur-Quan Masters Game Data File
.urlWebInternet Shortcut
.urrMiscUniface Signatures File
.urtRaster ImageUtah Raster Toolkit File
.usaGameUnreal Saved Game File
.userSettingsVisual Studio Project User Options File
.userprofileSettingsNorton Antivirus User Profile File
.usertile-msRaster ImageWindows 8 User Tile File
.usfAudioNintendo 64 Music File
.usflibAudioNintendo 64 Song Library
.usrDatabaseFileMaker Pro Database File
.ustarDataUniform Standard Tape Archive Format File
.usxGameUnreal Static Meshes
.ut2GameUnreal Tournament Map
.ut2modGameUnreal Tournament 2003/2004 Module File
.ut3GameUnreal Tournament 3 Map File
.ut4modGameUnreal Tournament 2004 Module
.utcGameBioware Creature File
.utf8TextUnicode UTF8-Encoded Text Document
.utwGameUnity Whirld File
.utxGameUnreal Texture Package
.utxtTextUnicode Text File
.utzSettingsUIQ Theme Package
.uuEncodedUuencoded File
.uudEncodedUUDecoded File
.uueEncodedUuencoded File
.uvfDataUncertain Value Format
.uvxGameUnreal Tournament 2003 Saved Game
.uwAudioUnsigned Word Audio File
.uwfAudioUltraTracker Wave File
.uwlDataUser Word List File
.uxxGameUnreal Tournament Cache
.uzipCompressedFreeBSD Compressed Disk Image