File Extension List

New programs are constantly being created and it is essential for our personal computer to know how to tell what kind of file it is accessing. That is precisely what a file extension is used for!

The data essential to choose which software to use to open a file is learned from the files extension. A files extension contains hints to the formatting of the file and what kind of data it carries. For example, many typical file extensions include: .gif for pictures, .rar for compressed files, and .mov for video. You may already be familiar with these typical extensions but with the always developing library of software and operating systems there are much more that you may have never discovered.

We have collected the accompanying listing to make identifying file extensions simple and painless! To determine the details indicated by a specified file extension, simply find the file extension from the list below.

• U3D
• U8
• UB
• UC2
• UDF
• UDO
• UDW
• UFI
• UHA
• UHS

• UI
• UIF
• UIH
• UL
• ULD
• ULF
• ULT
• UMB
• UNF
• UNI

• ULD
• ULF
• ULT
• UMB
• UNF
• UNI
• UNIF
• UNX
• UOML
• UPO

• URL
• URT
• USP
• USR
• UT!
• UTZ
• UU
• UUE
• UW
• UWF

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