File Type of the Day
.J2K
JPEG 2000 Image
A J2K file is a compressed bitmap image saved in the JPEG 2000 format. It supports 16-bit color and alpha transparency and may incorporate lossy or lossless compression.
.TAR
Tape Archive
A TAR file is an archive saved in the Tape Archive format. It contains multiple files that have been packaged together for easier storage and sharing.
.REG
Registry File
A REG file updates the Windows Registry when run. Custom REG files can be created to alter different aspects of Windows.
Weekly Top Extensions
—.APKAndroid Package File .CRYPT14WhatsApp Encrypted Database File+1 .JPGJPEG Image-1 .JSONJavaScript Object Notation File+1 .7Z.0017-Zip Split Archive Part 1 File-1 .SB3Scratch 3.0 Project+3 .ICSCalendar File+1 .ZIPZipped File-1 .PDFPortable Document Format File-3 .MP4MPEG-4 Video+1 .RARWinRAR Compressed Archive+2 .TXTPlain Text File-2 .P7SDigitally Signed Email Message+5 .NOMEDIAAndroid No Media File-2 .EMLE-Mail Message-1 .LNKWindows Shortcut+6 .TORRENTBitTorrent File+10 .CRDOWNLOADChrome Partially Downloaded File+1 .HTMLHypertext Markup Language File-2 .DATData File+3 .VCFvCard File-5 .PAGESApple Pages Document+13 .DOCXMicrosoft Word Document-2 .RPMSGOutlook Restricted Permission Message+4 .DATABASE_...Android Stale Thumbnails Identifier-10Universal File Viewers
Open your files with one of these file viewing utilities recommended by FileInfo.com.
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FileInfo.com contains a searchable database of over 10,000 file extensions with detailed information about the associated file types. You can look up information about unknown file types and find programs that open the files. Learn more about FileInfo.com.
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