The X
extension name file type Classification
K25 Kodak K25 Image camera raw files
K25 Kurzweil K2500 File audio file
K26 Kurzweil K2600 File audio file
K2S Kaiser 2 Saved Game game files
K3B K3b Disk Burning Project File disk image file
K3G 3GP Mobile Phone Video File video file
KAG King Arthur's Gold Map File game files
KAL Kratos Vision Data File data file
KAP BSB Chart Image File data file
KAR Karaoke MIDI File audio file
KAR Karel Function Dictionary game files
KB C++ Keyboard Script developer files
KB2 Kleo Backup File backup file
KBD 3ds Max Keyboard Shortcuts File settings file
KBD Keyboard Layout Script System Files
KBITS Bits'N'Picas Bitmap Font File data file
KBS Keyboard Script File data file
KCB Kindle Create Book File settings file
KCL NIntendo Collision File game files
KCT Keyman Developer Customization Source File developer files
KDB Keypass Database File database file
KDBX KeePass Password Database data file
KDC Kaspersky Virus Database File data file
KDC Kodak Photo-Enhancer File camera raw files
KDE KryptoStorage Container File encoding file
KDENLIVE Kdenlive Project File video file
KDEVDLG KDevelop Dialog Box File developer files
KDEVELOP KDevelop Project Data File developer files
KDEVPRJ KDevelop Project File developer files
KDI KD Player Skin Image File raster image file
KDK Kodak Proprietary Decimated TIFF File raster image file
KDMP Windows Crash Dump File developer files
KDS KD Player Skin File settings file
KDZ Kaspersky Virus Bases File data file
KEB Kaspersky Virus Bases File data file
KELG Best Free Keylogger Log File data file
KES Kurzweil 3000 Document text file
KEXI Kexi Database database file
KEXIC Kexi Database Connection File database file
KEXIS Kexi Database Shortcut File database file
KEXT Mac OS X Kernel Extension System Files
KEY Keyboard Definition File settings file
KEY Keynote Presentation data file
KEY LightWave License File Other files
KEY Security Key System Files
KEY Software License Key File Other files
KEY-TEF Keynote iCloud Presentation data file
KEYCHAIN Mac OS X Keychain File data file
KEYSTORE Java Keystore File encoding file
KEYTAB Kerberos Keytab File data file