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U FILE EXTENSIONS
Listing of file extensions starting with the letter U
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Extension
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Popularity
.U - Bitmap image
.U3D - Universal 3D File
.U3I - U3 Application Information File
.U3P - U3 Smart Application
.U4A - UnInstaller Archive
.U8 - Raw Unsigned 8-Bit Audio Data
.U96 - EasyZip Temporary File
.UAP - User Agent Profile File
.UAX - Unreal Audio File
.UB - Raw unsigned byte
.UBB - Basic Ubas File
.UBD - Basic Ubas file
.UBI - Animation UBISOFT
.UBM - Iphoto Mtwain Install file
.UBS - Tracesrv etc Bugslayer util file
.UC - UnrealScript Class
.UC0 - Archive UC
.UC2 - Compressed Archive File
.UCCAPILOG - Windows Live Messenger UCC API log file
.UCD - Prosa/ OM Use Case Diagram
.UCE - WINXP SYSTEM32 file
.UCF - WebEx Media File
.UCI - UFS Explorer Backup File
.UCN - Ultra-Compressor II Archive
.UCR - Pixel image file
.UD - AOL v4.0 file
.UDB - Microsoft Works File
.UDC - Acrobat Spelling File
.UDEB - Debian Package File
.UDF - Microsoft Excel User Defined Function
.UDI - Corel Graphics10 Draw Skripts textures Bitmap file
.UDL - MS Data Link
.UDO - 3D Graphic
.UDOG - Apple Browser Launcher
.UDP - User Datagram Protocol
.UDP - Corel VideoStudio Data File
.UDW - Raw unsigned doubleword
.UE2 - Encrypted archive
.UFA - UFA compressed file archive
.UFO - Ulead File for Objects
.UG - Drawing file
.UGA - Ulead GIF Animator Project File
.UGBT - Users & Groups
.UH - Age Of Empires - Age of Kings
.UHA - Compressed Multimedia Archive (UHarc) File
.UHS - Binary file
.UI - User Interface
.UIBAK - UltraISO Backup Disk Image
.UIF - Long prompts for Microsoft Windows
.UIF - MagicISO Disc Image File
.UIH - Espire header file
.UIL - Bitmap image (X-Motif UIL icon file)
.UIN - ICQ user
.UIS - WindowBlinds Skin
.UIS - Skin File
.UK - TAGCASE0 html folder file
.UKS - Microsoft Works File
.UK_ - McGuiness file
.UL - Audio file
.ULAW - Audio (CCITT G.711)
.ULD - Uploaded file information
.ULD - Unified Luminaire Data File
.ULF - Universal List File
.ULS - User Location Service
.ULT - Music module
.ULW - Raw µ-Law Audio File
.ULZ - USBlyzer Data Capture File
.UMB - Backup File
.UMOD - Unreal Self-extracting MOD File
.UMX - Unreal Game Data File
.UNAUTH - SiteMinder Unauthorized Message File
.UND - A86 UNDefined symbols
.UNI - UniMod music module
.UNI - Datafile
.UNIC - Unic Tracker v1/v2 formats (music/sound)
.UNITY - Unity Scene File
.UNIX - Text File
.UNIXYZ - UniChem XYZ chemical modeller input file
.UNIXYZ - UniChem chemical modeller output file
.UNKNOWN - Unknown File Type
.UNQ - ACT! 3.0 Email message attachment
.UNR - Unreal Game Data File
.UNUSED - Photoline4 Defaults file
.UNV - SDRC I-DEAS file
.UNX - Unix Text File
.UN_ - Ntgraph Setup30 file
.UOL - PhotoImpact Object Library File
.UOP - Ultima Online Patch File
.UP2 - Ulead COOL 3D Plugins Board File
.UPA - Universal Programmer Analyser File
.UPC - Ultimate Paint component
.UPD - Updated Program Data
.UPD - Universal Print Driver
.UPD - dBase Update File
.UPF - Bitmap image (Universal Picture Format)
.UPG - Grafik Anim file
.UPI - Program file
.UPI - Snooper Sat Nav GPS File
.UPJ - ULead Project File
.UPK - Unreal Engine 3 Package
.UPL - Starmoney Agent Download file
.UPO - dBase Compiled Update File
.UPOI - iGO Points of Interest File
.UPR - Claris user dictionary
.UPS - Microsoft Works File
.UPX - Nova Photo Explosion Image Template File
.UPZ - Starmoney Agent Download file
.URF - Universal radar format
.URF - Skin File
.URI - List of Uniform Resource Identifiers (WWW)
.URIS - List of Uniform Resource Identifiers (WWW)
.URL - Internet Shortcut
.URLS - Universal Resource Locator
.URL_ - Web Site Address-in Fiurl
.URT - Utah Raster Toolkit File
.US? - MS Word for DOS/WordPerfect Font
.USA - Microsoft Office Headers file
.USAGE - Snort file
.USB - Syssoft Sandra file
.USE - Source Integrity file
.USERPROFILE - Symantec Shared file
.USF - Nintendo 64 Music File
.USFLIB - Nintendo 64 Song Library
.USL - LaserJet Landscape Font
.USM - Unsigned Sample Module data Farandole
.USM - Game Video File
.USP - Printer font w/updated USACII extended characters
.USR - User database file
.USR - Audit trail file
.USRP - UTM/Universe Polar Stereographic
.USTAR - POSIX tar compressed archive
.USX - Unreal Static Meshes
.UT2 - Unreal Tournament Map
.UTBL - Text Encoding
.UTC - Bioware Creature File
.UTE - Rukus 110 file
.UTF8 - Unicode UTF8-Encoded Text
.UTI - SpyBot Search & Destroy File
.UTI - Encrypted File
.UTL - QuickBooks data
.UTP - BinPatch Patch Data File
.UTS - SpyBot Search & Destroy File
.UTX - Unreal Texture File
.UTXT - Unicode Text File
.UTZ - UIQ Theme Package
.UU - Compressed Archive File
.UUD - UU-decoded file
.UUE - UU-encoded file
.UVF - Uncertain Value Format
.UVR - Ulead Cool 360 Viewer File
.UVV - Listlabl file
.UW - Raw unsigned 16-bit datafile
.UWF - Wave file
.UWL - WordPerfect User Word List
.UX - Unix file
.UXX - Unreal Tournament Cache
.UYVY - YUV 16Bits image format
.UYVY - ImageMagick 5.3.2 Perlmagick file
158
U
File Extensions Found
Sections
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Software
Common Files
File Categories
3D/CAD
Audio
Backup
Compressed
Configuration
Data
Database
Developer
Disk Image
Encrypted
Executable
Font
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Image
Miscellaneous
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System
Text
Video
Web
