since 2000
Alphabetic File Extension List: k
The file extension list you requested is shown on this page. It loads as a table so please give it a moment as some of the lists are quite long. These lists contain basic information: the extension, the name of the program it works with, the specific function of the file, and the company that makes the program. Not all extensions have all of the data. Click on the extension of interest to see the detail page for that extension. Total extensions in this particular list: 379.
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| Extension | Information |
| K | Desktop Color Separation Specification Black Layer |
| K | IRIS Editor Format File (eurobraille) |
| K | NRJ Live File |
| K00 | Tonline DB File |
| K01 | Clarion DOS Database Key File (SoftVelocity) |
| K01 | Tonline DB File |
| K02 | Clarion DOS Database Key File (SoftVelocity) |
| K02 | Tonline DB File |
| K03 | Clarion DOS Database Key File (SoftVelocity) |
| K03 | Tonline DB File |
| K04 | Clarion DOS Database Key File (SoftVelocity) |
| K05 | Clarion DOS Database Key File (SoftVelocity) |
| K06 | Clarion DOS Database Key File (SoftVelocity) |
| K07 | Clarion DOS Database Key File (SoftVelocity) |
| K08 | Clarion DOS Database Key File (SoftVelocity) |
| K09 | Clarion DOS Database Key File (SoftVelocity) |
| K1S | Wave Glib19 File |
| K2 | Kar2ouche Storyboard File |
| K25 | Kodak DC25 Digital Camera File |
| K25 | Kurzweil 2500 Sample (Kurzweil Music Systems, Inc.) |
| K3D | 3DS Macro Language Description |
| K4E | Karaoke 4 Everyone.com Player/Editor File (Karaoke 4 Everyone.com) |
| K7 | DCMO6 Emulator Tape Image |
| KA | Karma Asset |
| KAF | Resurrection Matchmaker! MapPack (Wildman-Productions) |
| KAL | KManager Calibration Data File (Hondata, Inc.) |
| KAL | Sfkal Calender Kal_40 File |
| KAN | Kwalitan Annotation (Vincent Peters, Department of Research Methodology, University of Nijmegen, The Netherlands) |
| KAP | MapInfo Sea Chart (MapInfo Corporation) |
| KAR | FOX+ 2.0 |
| KAR | Karaoke MIDI File |
| KAR | Keep-It Archive (Remember International Associates Ltd) |
| KAT | Katorzer Music Composition |
| KAU | KeyAudit Software Audit |
| KAW | Karma Workspace |
| KB | C++ Builder keyboard script (Embarcadero) |
| KB | Call of Duty: Modern Warfare key bindings (Activision) |
| KB | Knowledge Pro data (Knowledge Garden) |
| KBD | Dungeon Lords Game Data (Typhoon Games (HK) Ltd.) |
| KBD | Keyboard Script File Layout (Microsoft Corporation) |
| KBF | MyInfo Documnet/Outline (Milenix Software) |
| KBI | Keirsey-Bates Temperament Sorter Index |
| KBM | Reflection Keyboard Script File Layout |
| KBM | Scala Keyboard Mapping |
| KBN | TeamSpeak Keybinding File (TeamSpeak Systems) |
| KBP | Keirsey-Bates Temperament Sorter Profile |
| KBR | Keirsey-Bates Temperament Sorter Data |
| KBR | The Drums Pro file |
| KBS | ACE Studio Model Builder |
| KBX | AVG Keyboard Shortcut Definitions (AVG Technologies) |
| KBX | KBOX Heroes Factory File (KBOX Team) |
| KC | Keyman, Kingsoft Writer, Kivy Keyboard Configuration |
| KCB | Kindle Create Kindle Create project |
| KCC | KeywordConvert Keyword/Phrase Combine List (FormatBlue Software) |
| KCF | KiSS Configuration File |
| KCF | Sony Ericsson Remote Control Configuration |
| KCH | KChess Notation File (Ark Angles) |
| KCL | KeywordConvert Keyword/Phrase List (FormatBlue Software) |
| KCL | Kyoto Common LISP Source Code |
| KCM | KönyvCalc File (MM.sys Számítástechnikai Bt.) |
| KCO | Kwalitan Codes (Vincent Peters, Department of Research Methodology, University of Nijmegen, The Netherlands) |
| KCOL | K-Lite Codec Pack Karaoke Collection Data |
| KCP | Keychamp File |
| KCT | Kwalitan Categories (Vincent Peters, Department of Research Methodology, University of Nijmegen, The Netherlands) |
| KDB | Doobs database (Kyuran's World) |
| KDB | KeePass Password Safe password database (Dominik Reichl) |
| KDB | kinodb data (datb) |
| KDB | kusziNET database (kusziNET) |
| KDB | SQLite database (SQLite Consortium) |
| KDB | Sterlin Connect:Direct key database (IBM) |
| KDBX | KeePass password database file (Dominik Reichl) |
| KDC | EasyShare raw image (Eastman Kodak) |
| KDC | Kaspersky Antivirus antivirus bases (Kaspersky Lab) |
| KDC | Kwalitan document (Vincent Peters) |
| KDELNK | KDE Desktop |
| KDEVELOP | KDevelop Global Project Configuration Information (KDevelop Team) |
| KDEVPRJ | KDevelop Project File (KDevelop Team) |
| KDEVSES | KDevelop Specific Behavior Configuration File (KDevelop Team) |
| KDF | Kinkos Photo (Kinko's, Inc.) |
| KDF | VisiQuest (Khoros) Standard Data Format (AccuSoft) |
| KDH | CAJViewer |
| KDK | Kodak Proprietary Decimated TIFF Format |
| KDO | Kudo Picture Browser |
| KDT | Medbasin Evaporation Data (National Technical University of Athens, Laboratory of Reclamation Works & Water Resources Management) |
| KDT | saved game data saved game data |
| KDZ | Kaspersky Anti-Virus base file (Kaspersky Labs) |
| KDZ | LG Flash Tool firmware file (LG Electronics) |
| KE$ | Modem Bitware Fax Disk2 File |
| KED | KEDIT Profile and Macro File |
| KEN | Player CDcheck Compressed File |
| KEP | SapShow Training File (SAP) |
| KEP | Turbo Pascal DOS TP19 Compressed Kepler File (Borland Software Corporation) |
| KERNEL | Apple II operating system Golden Orchard Apple II CD Rom file |
| KES | Kurzweil 1000 and 3000 Accessible Documents (Kurzweil Educational Systems, Inc.) |
| KEV | JAWS for Windows Preload File (Freedom Scientific) |
| KEX | Haxial KRE KRE Executable (Haxial Software Pty Ltd.) |
| KEX | KEDIT Macro File |
| KEXI | Kexi Native Database File (KDE e.V.) |
| KEXIS | Kexi Database Connection Parameter File (KDE e.V.) |
| KEXT | Mac OS X Kernel Extension (Apple Inc.) |
| KEY | AntiVir PersonalEdition license key file (Avira GmbH) |
| KEY | ArcView geocoding matching keys file (ESRI) |
| KEY | Aurora Engine resource file (BioWare Corp.) |
| KEY | Avira Security Suite product key file (Avira GmbH) |
| KEY | Business Key accounting file (Universal Systems) |
| KEY | DataCAD icon toolbar file (DATACAD LLC) |
| KEY | Diablo II key file (Blizzard Entertainment) |
| KEY | Forecast Pro data file (Forecast Pro) |
| KEY | FractInt demo script (Stone Soup Group) |
| KEY | Infinity Engine directory file (BioWare Corp.) |
| KEY | Kaspersky Anti-Virus product key file (Kaspersky Labs) |
| KEY | Keynote presentation file (Apple Inc.) |
| KEY | LightWave 3D license file (NewTek) |
| KEY | National Construction Estimator costbook key file (Craftsman Book Company) |
| KEY | Notes product key file (HCL Software) |
| KEY | OS/2 archive key file (IBM) |
| KEY | Sentry 2020 encryption file (SoftWinter) |
| KEY | Top Secret Crypto Gold license key file (TAN$TAAFL Software Company) |
| KEYBOARD | Amaya Configuration |
| KEYCHAIN | Keychain Access Password storage |
| KEYCHAIN-DB | Keychain Access macOS Keychain database |
| KEYGEN | Software crackers Generate license keys |
| KEYNOTE | iWork Keynote File (Apple Inc.) |
| KEYS | Apple II operating system Golden Orchard Apple II CD Rom file |
| KEYSTORE | Java Development Kit encrypted key file (Oracle) |
| KEYTAB | Kerberos keytab file (Massachusetts Institute of Technology (MIT)) |
| KEY_DATAS | TeamSpeak 3 Encrypted configuration |
| KE_ | Ntgraph Ze32v215 File |
| KF | Gamebryo Gamebryo 3D Model Key Frame (Gamebryo) |
| KF2 | Max Payne Model File (Rockstar Games) |
| KFA | Dark Age of Camelot Animation |
| KFA | IRIS Shortened Format (eurobraille) |
| KFI | IRIS Native Data File (eurobraille) |
| KFL | IRIS Literary (eurobraille) |
| KFL | KFLog Airfield File |
| KFL | Kwalitan Filter (Vincent Peters, Department of Research Methodology, University of Nijmegen, The Netherlands) |
| KFL | Pegasus Mail Auto-Reply Memory File (David Harris) |
| KFM | GameBryo 3D game model (Gamebase) |
| KFM | KEY Form Designer form design (Broderbund) |
| KFM | Killing Floor game map (Tripwire) |
| KFN | KaraFun Karaoke Song (RECISIO S.A.R.L.) |
| KFP | Kinkos File Prep Tool |
| KFS | Max Payne Model File (Rockstar Games) |
| KFS | Pegasus Mail Static Kill File (David Harris) |
| KFT | Matrox X Tools Keyframe (Matrox Electronic Systems Ltd.) |
| KFX | Calibre e-book (Calibre Community) |
| KFX | Kindle e-book (Amazon) |
| KFX | XnView bitmap (XnSoft) |
| KFX-ZIP | Amazon Kindle Kindle eBook |
| KGB | KGB Archiver standard archive file (Tomasz Pawlak) |
| KGB | Kremlin Encrypt encoded and encrypted file (Kremlin) |
| KGB | Z80 Spectrum Emulator Snap/File Format |
| KGDB | Keepass Password Database |
| KGP | Image |
| KHD | ViewChoice (Payroll Associates, LLC) |
| KHF | Kwalitan Tree Structure (Vincent Peters, Department of Research Methodology, University of Nijmegen, The Netherlands) |
| KHS | Kwalitan History (Vincent Peters, Department of Research Methodology, University of Nijmegen, The Netherlands) |
| KHTMP | Google Earth Temporary Object Location (Google) |
| KIC | Kodak Image Compression File (Eastman Kodak Company) |
| KICAD_PCB | KiCad EDA KiCad PCB Design |
| KICAD_SCH | KiCad EDA KiCad Schematic |
| KID | Kidspiration (Inspiration Software, Inc.) |
| KID | Tonline Bsw4 Install Mdmimp File |
| KIF | AutoCAD Key Index (Autodesk, Inc.) |
| KIF | Knowledge Interchange Format Draft Proposition |
| KIK | Apple II operating system Golden Orchard Apple II CD Rom file |
| KIKTMPORIGINALPICFILE | Kik Messenger Temporary image storage |
| KIL | Interview File |
| KIM | Commodore KIM-1 Program Image File |
| KIN | Kinemage Chemical Protein Language |
| KINE | KineMaster Video Editing Project |
| KIP | OA-KIP Client Data Transfer File (van Ovost Automatisering b.v.) |
| KIT | 20-20 Design Kitchen Design (20-20 Technologies) |
| KIT | Battery Drum Kit (Native Instruments) |
| KIT | Power Chord Drum Kit |
| KIT | Raven Toolkit File |
| KITSP | KIT Scenarist Celtx script files |
| KIX | KiXtart Script |
| KIZ | Kodak Digital Postcard File |
| KIZ | UUencoded File |
| KJV | TheWord & Bible Companion King James Version Bible |
| KK1 | ViewChoice (Payroll Associates, LLC) |
| KK2 | ViewChoice (Payroll Associates, LLC) |
| KKT | TTSKONE |
| KKW | RoboHELP Keyword Help Project Index File |
| KL | Haxial Compiler Haxial KL Source File (Haxial Software Ltd.) |
| KLA | KLARFF Map Data |
| KLARF | KLA-Tencor Klarf Reader Wafer defect data |
| KLB | GraphicWorks Album |
| KLB | Klemmbretter |
| KLD | Dungeon Keeper 2 Playable Map (Electronic Arts, Inc.) |
| KLI | KalKulator Linear Algebra File |
| KLIP | KlipFolio Klip (serence inc.) |
| KLN | COLOGNE Multilingual Transliteration Scheme |
| KM | BMC Software Patrol File |
| KM | COOL Biz Database Diagram (Sterling Software, Inc.) |
| KM2 | ActiveModeler Professional Process Map (KAISHA-Tec Co. Ltd.) |
| KM3 | Kernel MetaMetaModel |
| KMA | Correlate K-Map Structure (Correlate AS.) |
| KMA | Kodak Memory Album (Kodak) |
| KMA | Video Hoster Karaoke File (Micro Technology Unlimited) |
| kmap | lyx Keymap |
| KMC | Correlate documents (Correlate AS.) |
| KMC | Kinmac 3D animation (SoftoBe) |
| KMD | ABSTAT for Windows Batch File (AndersonBell Corp) |
| KMD | AIMAX Keyboard Macro (TA Engineering) |
| KMD | Clicker Module Output |
| KMD | Media Desktop File (Kaaza) |
| KMD | Model Browser File (Metis) |
| KMDR | Kommander (KDE Web Dev Team) |
| KMF | Kwalitan Memo (Vincent Peters, Department of Research Methodology, University of Nijmegen, The Netherlands) |
| KML | ArcGIS GIS project file (Map) (ESRI) |
| KML | Blender Graphics format (Blender Foundation) |
| KML | Emu48 Emulator Keyboard Configuration File |
| KML | Google Earth GIS project file (Map) (Google) |
| KML | HP48 Emulator Win48 Script |
| KML | Kedit Macro Library |
| KML | Keyhole placemark (Google) |
| KMN | SIL Hebrew Font System Keyboard |
| KMNB | Keep My Notes Note Database |
| KMP | Correlate K-Map KnowledgeMap (Correlate AS) |
| KMP | Ketchum Media Player Playlist (Ketchum Software Inc.) |
| KMP | Knowledge Manager Knowledge Base Compressed Map (Hypersoft-net) |
| KMP | Korg Trinity KeyMaP File |
| KMP | KORG Trinity/Triton Multisample (KORG) |
| KMPROJECT | KineMaster KineMaster project |
| KMS | Correlate Solution Topics (Correlate AS.) |
| KMS | Model Browser Shortcut (Metis) |
| KMV | Model Browser File (Metis) |
| KMY | KMyMoney Decompressed XML Data |
| KMZ | Correlate K-Map GIS project file (Map) (Correlate AS) |
| KMZ | Google Earth GIS project file (Map) (Google) |
| KM_ | Seqmax Seqprest Compressed Audio File |
| KN5 | Assetto Corsa 3D model |
| KND | NEPLAN NEPLAN-DOS Import/Export File (BCP Busarello + Cott + Partner Inc.) |
| KNF | Orchida Knitting System (Orchida Soft) |
| KNF | Personal Knowbase Custom Import Filter (Bitsmith Software) |
| KNF | Universal Flat Knitting Machine Pattern Design |
| KNN | Clarion for Windows Database Key (SoftVelocity) |
| KNO | Personal Knowbase Data (Bitsmith Software) |
| KNT | KeyNote Note File (Marek Jedlinski) |
| KNW | Known Problems |
| KO | IBM/Tools/Updater File |
| KOA | Koala Paint C64 Bitmap |
| KOD | Code |
| KODC | Kodak EasyShare Software Kodak raw image |
| KOE | Turbo Pascal DOS File (Borland Software Corporation) |
| KOK | DEL MP3 Karaoke |
| KOM | Kit-O-Mat 3D Model File (KingMill Enterprises LLC) |
| KON | Konfabulator Widget Code (Konfabulator) |
| KOOK | Kook Ransomware Encrypted Files |
| KOR | Correction File |
| KOR | Korean Text File |
| KOS | MicroType Pro Document |
| KOSIMA | Kosima File |
| KOTLIN_BUILTINS | Kotlin Compiler (kotlinc) Kotlin metadata |
| KOTLIN_METADATA | Kotlin Compiler (kotlinc) Kotlin metadata |
| KOTLIN_MODULE | Kotlin compiler Kotlin module metadata |
| KOZ | Sprint Music Store Music Download for Phone (Sprint Nextel) |
| KPD | Kapital Database File (K Software) |
| KPF | Kapere |
| KPF | Komodo Project File (ActiveState Software) |
| KPG | Kai'S Power Goo Graphic |
| KPJ | K Database Magic Project File (Sandor Kovacs) |
| KPL | Kazaa Playlist |
| KPL | KPL Source Code |
| KPP | Kid Pix Deluxe Slide Show (Broderbund) |
| KPP | Kudo Place Pack, Place Module |
| KPP | SmartPad Toolpad |
| KPPX | Keypoint Presentation (Digitalsoft) |
| KPR | Fifa World Cup Game Data Comon be File |
| KPR | KPresenter Slide Show (KOffice Web Team) |
| KPR | Kwalitan Project (Vincent Peters, Department of Research Methodology, University of Nijmegen, The Netherlands) |
| KPS | IBM KIPS Bitmap |
| KPT | KPresenter Template (KOffice Web Team) |
| KPX | Kid Pix Deluxe Data File (Broderbund) |
| KQ | King's Quest (Sierra Entertainment) King's Quest Data |
| KQL | Kyle's Quest Level Editor Graphic (Crimson Fire Entertainment) |
| KQP | Konica Quality Picture |
| KR1 | Kurzweil 2000 Sample (Kurzweil Music Systems, Inc.) |
| KRA | Krita painting (Krita Foundation) |
| KRAW | BRSTM Audio Stream (Nintendo) |
| KRAW | Macintosh OS X Kernel-Raw Image Format (Apple Inc.) |
| KRA_ | Krita Krita drawing project |
| KRA~ | Krita temporary krita project (KDE) |
| KRC | Mouse and Key Recorder Recorded File (Kra-Tronic Corporation) |
| KRD | Kyocera GPS devices, Zeiss microscopes, Topcon Tools GPS, Microscope data |
| KRF | K2S.View, Camtek Eagle inspection system Inspection Data, K2S Data |
| KRIS | Kris Tracker Format Song |
| KRISTAL | KRISTAL Audio Engine Project File (Kreatives.org) |
| KRK | Xbox Music Mixer Karaoke-enabled Music File (Microsoft Corporation) |
| KRN | NBA99 Ice Hockey Foreground Font |
| KRP | HiCAD 3D Part File (ISD Benelux B.V.) |
| KRX | Karaoke MIDI File |
| KRY | Herolab Krypten |
| KRZ | Kurzweil 2000 Sample (Kurzweil Music Systems, Inc.) |
| KS | SOF Game File Log |
| KS | Works Sheet (Microsoft Corporation) |
| KS-IG | Keynote Khan Academy Study Guide |
| KS-IPC | Keynote Test preparation presentations |
| KSC | Korg Trinity Script |
| KSC | KORG Trinity/Triton Script (KORG) |
| KSD | saved game data saved game data |
| KSE | Keepsake Studio Export File |
| KSF | Kick it Up Stepfiles |
| KSF | KORG Trinity/Triton Sample (KORG) |
| KSG | Kwalitan Segment (Vincent Peters, Department of Research Methodology, University of Nijmegen, The Netherlands) |
| KSH | Dazzle Dazzle Realization lyrics |
| KSH | KornShell shell script (David Korn) |
| KSH | Prodigy internet registration data |
| KSHRC | UNIX Kom Shell Environment File |
| KSL | Karaoke Song List Creator Song List (Airwer) |
| KSM | Embroidery File Format for Pfaff Machines |
| KSM | Kefrens-Sound Machine Format Song |
| KSM | Ken Silverman Music Format |
| KSP | KeyShot 3D Rendering Project |
| KSS | FabTrol MRP Template File (FabTrol Systems, Inc) |
| KSS | K-ForCE Scoresheet File (Stephan Rakonza) |
| KSS | KDE [UNIX/Linux Desktop] Screen Saver (KDE) |
| KSS | MSX Music File |
| KST | Olivetti Olitext Plus Script File |
| KSW | Kepler Scientific Workflows (Kepler Project) |
| KT | Android Studio source code (Google & JetBrains) |
| KT | IntelliJ IDEA source code (JetBrains) |
| KT2 | BATTERY 2 Drum Kit (Native Instruments) |
| KT3 | Battery 3 Battery 3 (Native Instruments) |
| KTE | FoilMaker Kite Design |
| KTH | Keynote Theme File (Apple Inc.) |
| KTI | Kelvin TOP-SET Investigator Investigation Data (The Kelvin Consultants Limited) |
| KTK | Kutoka's Mia |
| KTP | Clarion for Windows Temporary Key File (SoftVelocity) |
| KTR | Pentaho Data Integration (Kettle) Data Transformation |
| KTT | KeyText Data File |
| KTX | Kwalitan Text (Vincent Peters, Department of Research Methodology, University of Nijmegen, The Netherlands) |
| KTX2 | 3D graphics applications, game engines, and web browsers texture image container |
| KU | Knowledge Explorer Knowledge Representation Knowledge Unit |
| KUMAC | Physics Analysis Workstation Macro File |
| KUN | Astro-Vision LifeSign Mini, Kundli Pro, Kundli for Windows Astrological Data Storage |
| KUP | Karaoke Song List Creator (Airwer) |
| KV | Sublime application source code (Sublime) |
| KV3 | KM-NET Viewer Database (Kyocera Mita Corporation) |
| KVA | KVIrc Add-on (KVIrc Development Team) |
| KVAG | KVAD Photo Editor Compressed Images |
| KVB | Klick-N-View Business Cards |
| KVC | KVIrc Configuration (KVIrc Development Team) |
| KVQ | Sega Smash Pack PC Version File (Sega of America, Inc.) |
| KVS | KVIrc Script (KVIrc Development Team) |
| KVT | BASIC QuickBAS QuickB03 File |
| KVT | KVIrc Theme (KVIrc Development Team) |
| KVW | Google Earth Workspace (Google) |
| KW | Kingsoft Writer, Apple Keynote, KompoZer document, presentation, project |
| KW$ | NTgraph Visual C Wizzard File |
| KW3 | KanjiWORD Document (Pacific Software Publishing, Inc.) |
| KWB | KeyWord Braille File (Pulse Data International Ltd) |
| KWB | Kwalitan Workfile (Vincent Peters, Department of Research Methodology, University of Nijmegen, The Netherlands) |
| KWC | KeyWallet Compressed Skin (KeyWallet GbR) |
| KWD | Dungeon Keeper 2 Playable Map (Electronic Arts, Inc.) |
| KWD | Keyword |
| KWD | KWord File (KWord Team) |
| KWF | Delphi Pascal Chart |
| KWF | Kartex |
| KWF | Kwalitan Word List (Vincent Peters, Department of Research Methodology, University of Nijmegen, The Netherlands) |
| KWI | Navigation System Data File (KIWI Format) |
| KWO | KeyWallet Object (KeyWallet GbR) |
| KWS | KeyWallet Skin (KeyWallet GbR) |
| KWS | Kyocera Ringtone |
| KWV | Korg Trinity/Triton Wave Audio |
| KXS | Kexis Lossless Compressed Audio |
| KY | Peachtext List Manager (Peachtree Software (Sage Software SB, Inc.)) |
| KY8 | Sage 50 (formerly Peachtree Accounting) Accounting answer key |
| KYB | Keyboard Layout |
| KYE | Kye Game Data |
| KYF | Visual-Voice Mouth Movement File |
| KYS | Photoshop CS Keyboard Shortcut (Adobe Systems Incorporated) |
| KYS | Premiere Keys File (Adobe Systems Incorporated) |
| KYS | SourceOffSite Server Keys |
| KZ | KuaiZip compressed archive (Dream Chaser) |
| KZM | Karizma Designer Album File (Karizma) |
| KZP | Kazoo3D or KazooStudio KazooPicture |
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