By:
Last Updated: 04-14-2012
, Posted: 06-24-2010
Find data file formats and file extensions that start with the letter U, or view thousands of file extensions and file formats in the complete list.
With literally thousands of data file formats employed by Windows and Window-based apps, keeping track of all the file extensions employed by your software applications and programs can be quite a challenge. Fortunately, Webopedia's Complete List of Data File Formats and File Extensions makes it quick and easy to sift through thousands of file extensions and data file formats to find exactly what you need. You can peruse the full list or search for data formats and file extensions based on the letter they start with from the table below.
Data File Formats that Begin 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
Recommended Reading: An Introduction to Data File Formats and Their File Extensions
