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
This article was last updated on April 15, 2011
