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Home > Quick Reference > File Extensions

Data Formats and Their File Extensions -- U

Number Symbol 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 Full List
.uax	Unreal Audio file
.ub     Audio file (unsigned byte)
.uc2    Compressed file archive created by UltraCompressor II (
.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 Object file
.uha	UHARC Compressed Archive
.uhs    Universal Hint System (binary file)
.ui     Espire source code file (Geoworks UI Compiler)
	User interface (Sprint)
.uif    Long prompts for windows (WordPerfect for Win)
.uih    Espire header file (Geoworks UI Compiler)
.ul     Ulaw audio file
.uld    Information about uploaded files (Procomm Plus)
.ult    Music (UltraTracker)
.umb    Backup file (MemMaker)
.umx	Unreal music file
.uni    Unimod music module (MIKMOD)
	Datafile (Forecast Pro)
.unq	Fax View file 
.unx    Text file containing UNIX specific info
.upd    Program update info
	Update data (dBASE)
.upo    Compiled update data (dBASE)
.upx	ULead Photo Express Saved Image file
.usb	D-Link FM Radio Update
        USB Protocol Analyzer Trace
.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 Texture file
	Unicode file 
.uu     Compressed ASCII file archive created by UUDE/ENCODE
.uue    Compressed ASCII file archive created by UUENCODE (uuexe515.exe)
.uvr	Ulead Cool 360 Viewer file
.uw     Audio file (unsigned word)
.uwl	WordPerfect User word list

Number Symbol 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 Full List

Do you have a file extension that starts with "U" that is not in our list? Click here to submit a file extension.

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