Alphabetic File Extension List: j

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: 444.

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Extension Information
J JAR compressed and archived file (ARJ Software)
J Java source code and script file (Oracle)
J XnView MP bitmap image file (Pierre-Emmanuel Gougelet)
J00 HJSplit Split archive part
J01 HJSplit, 7-Zip, JDownloader split archive part
J1 EDIT Compiler JEDEC Boundary File
J2A Jazz Jackrabbit 2 Animation Library (Epic MegaGames Inc.)
J2B Jazz Jackrabbit 2 Music File (Epic MegaGames, Inc.)
J2D Jazz Jackrabbit Data File (Epic MegaGames, Inc.)
J2E Jazz Jackrabbit 2 Episode File (Epic MegaGames, Inc.)
J2G J2 Fax File
J2H Jazz Jackrabbit 2 High Scores (Epic MegaGames, Inc.)
J2I Jazz Jackrabbit 2 Internet Server Link (Epic MegaGames, Inc.)
J2K IrfanView image (Irfan Skiljan)
J2K PaintShop image (Corel)
J2K Photoshop image (Adobe)
J2L Jaxx Creation Station Level File (Epic MegaGames Inc.)
J2M Jazz Jackrabbit 2 Recorded Macro (Epic MegaGames, Inc.)
J2S Jazz Jackrabbit 2 Language Data (Epic MegaGames, Inc.)
J2T Jazz Jackrabbit 2 Tile Set (Epic MegaGames, Inc.)
J2V Jazz Jackrabbit 2 Cinematic File (Epic MegaGames, Inc.)
J62 Ricoh Digital Camera File
J6I Ricoh Digital Camera File (Ricoh Co., Ltd.)
J92 Javelin Configuration File (Minisoft Inc.)
JA Chrome data (Google)
JA Firefox data (Mozilla)
JA Tools Updater updates (IBM)
JA Trainz Railroad Simulator game data archive (Auran)
JACKSUM Jacksum Fingerprint (Dipl.-Inf. (FH) Johann N. Löfflmann)
JAD Java SDK application descriptor (Oracle)
JAG Jaguar Server File
JAM E-mail
JAM FTN Software Jam Messagebase
JAM Image Microprose
JAM JamTracker Music Module
JAM Joaquim-Andrew-Mats Message Base Proposal
JAMMIX Jammix Enhacer Music Transform File (Danilics Tibor)
JAMS jams.py audio annotation file
JAP Fifa World Cup Game Data fe Art Legalscr File
JAP JAlbum Project File (Datadosen)
JAR JAR archive (ARJ)
JAR JARCS compressed archive (JPMdL Archival System)
JAR Java applet (Oracle)
JAR Java application (Oracle)
JAS Cheetah3D 3D model (Martin Wengenmayer)
JAS Paint Shop Pro raster images (Corel)
JASC JAS Compressed Graphic
JASP JASP Saving JASP projects
JASPER JasperReports instructions file (Jaspersoft)
JAU Jauge
JAV Java Source Code (Sun)
JAVA Eclipse source code (Eclipse Foundation)
JAVA JDK source code (Oracle)
JAVA NetBeans source code (Oracle)
JAW IchiTaro Web Japanese Extended WordProcessor (Justsystem Corporation)
JB2 JBIG2 Bitmap Graphic
JB2E compressed image file Compressed Images
JBA Jabaco Source Code Programming Language (Jabaco)
JBB JobEditor32 Binary Job Data (Motoman Inc.)
JBC BestCrypt Container (Jetico, Inc.)
JBC Jam Byte-Codec File
JBD SigmaScan Data File
JBF Backup Now backed up data (JetSoft)
JBF PaintShop thumbnail cache (Corel)
JBG JBIG File
JBI JobEditor32 ASCII Job Data (Motoman Inc.)
JBIG JBIG File
JBIG2 JBIG2 Bitmap Graphic
JBK Jet database backup file (Microsoft Corporation)
JBK Jot + Notes Backup File for Older Version (King Stairs Software)
JBK Juno Backup File
JBL Doom Scene Add-in (Id Software, Inc.)
JBM Gamebryo LightSpeed, Gamebryo 3D model
JBP DJ Jukebox Project
JBR Paint Shop Pro Brush (Corel Corporation)
JBS DesignArt Vector Graphic (Océ N.V.)
JBX Project Scheduler File
JC FlashGet Intermediate Download (Beijing Zhitongwuxian Tech, Ltd.)
JC Watcom Source File
JC! FlashGet Incomplete Download (Beijing Zhitongwuxian Tech, Ltd.)
JC5 NedGraphics Jacquard weaving design
JCAMP Misc
JCB CB-JCBrooke Song/Module
JCC Code Crusader Project Data (New Planet Software)
JCC Japan Crossword Dmitry Torshin Format File (EliteWare)
JCD FlashGet Download Database File (Beijing Zhitongwuxian Tech, Ltd.)
JCE JWPce (Glenn Rosenthal)
JCF JAWS for Windows Configuration File (Freedom Scientific)
JCK Liquid Motion JACK Scene Description
JCL Job Control Language IBM
JCM Java Commerce Message Commerce Message (Wallet) (Sun)
JCP Jesusonic Preset (Cockos Incorporated)
JCS Flashget Script HTML Table
JCS Latest Bruker WinSpecEdit v3.08 JCAMP
JCV Baseball/Golf Analyzer (JC Video Systems)
JD Jigsaw Terminal File
JDA Winphone Fax Send Journal
JDB Norton AntiVirus Update File (Symantec Corporation)
JDB Siren Jukebox
JDB Winphone Fax Receive Journal
JDB3 SQL Developer SQL Job Log
JDBG Project JEDI Embedded JCL Debug Information (Project JEDI)
JDE Cariverona
JDF Delta Project file (JEOL)
JDF JAWS Dictionary file (Freedom Scientific)
JDF Turok 2 Game data file (Iguana Entertainment)
JDP Eclipse software project (BlackBerry)
JDR JDR Viewer Recording Data
JDT Capture Classic Filler (Accelio)
JDX EDICT Index
JDX J Database Exchange (JDX) O/R Mapping Specification (Software Tree, Inc.)
JDX JCAMP Chemical Spectroscopic Data Exchange Format (MDL Information Systems, Inc.)
JDX JSpell UNICODE Dictionary (Page Scholar Inc.)
JED ISE device configuration (Xilinx)
JED WinCUPL device configuration (Microchip)
JEF Artistic Digitizer stitch file (Janome America, Inc.)
JEF Embird Studio stitch file (BALARAD)
JEF SewWhat-Pro stitch file (S & S Computing)
JEM Blockbench Minecraft entity model
JEQ Jet Audio Saved Equalizer Setting (JetAudio, Inc.)
JESD JZEasyText Word Processor Save File (JamesZhu Inc.)
JET Access database (Microsoft)
JET Bloons Tower Defense game data (Ninja Kiwi)
JET Eclipse template (Eclipse Foundation)
JET Hybrid JetFax fax document
JET Jetpack level map (Jetpack HQ)
JET SQLite database (SQLite Consortium)
JET The Jackbox Party Pack rap battle data (Jackbox)
JFD FormWare Job
JFD JAWS for Windows (Freedom Scientific)
JFF JAWS for Windows (Freedom Scientific)
JFF JPEG Image
JFG jEEPers User Specific Information
JFI JPEG/JIFF Image
JFIF Gmail email attachment (Google)
JFIF PDFsharp document (Empira)
JFIF Photos image (Microsoft)
JFIF Preview image (Apple)
JFM Capture Classic (Accelio)
JFR Java Flight Recorder Diagnostic and Profiling data tool (Oracle)
JFT Tekla Structures Tekla Structures Model
JFX J2 Fax File
JG6 BigJig Jigsaw (Lena Pankratova)
JGCSCS EditPad Pro Custom Coloring Scheme (JGsoft - Just Great Software)
JGD Paint Shop Pro Gradient (Corel Corporation)
JGF JAWS for Windows Configuration File (Freedom Scientific)
JGF Jetcam Geometry File (JETCAM International, Ltd.)
JGL QWS3270 PLUS Session Layout File (Jolly Giant Software Inc.)
JGP QWS3270 PLUS Session Parameter File (Jolly Giant Software Inc.)
JGS QWS3270 PLUS Script (Jolly Giant Software Inc.)
JGW ArcGIS rule definition file (ESRI)
JGW AutoCAD graphics format (Autodesk Inc.)
JGW Map File
JGZ GZip compressed script file (Jean-loup Gailly and Mark Adler)
JHTM Dynamo Server Page
JHTML Dynamo Server Page
JIC Quartus II configuration file (Altera)
JIF Photo Studio image (ACD)
JIF XnView image (XnSoft)
JIG Jigsaw Game (GameHouse, Inc., a division of RealNetworks, Inc.)
JIG Living Scenes Jigsaw Puzzles (Carolina Road Software L.L.C.)
JIGDO Jigsaw Download Download Instruction File (Richard Atterer)
JIGSAW JIGSAW Explorer JIGSAW puzzle (Carolina Road Software)
JIM Apple II operating system Golden Orchard Apple II CD Rom file
JIS Japanese Industrial Standard Text File
JJ C64 Doodle Compressed File
JJ JavaCC File
JJC Canvas Compressed Audio File
JJF Jester Jugglor File
JKL Jedi Knight
JKM JAWS for Windows Configuration File (Freedom Scientific)
JKS Jedi Knight Backup
JKS keytool Java Keystore (Sun Microsystems, Inc.)
JL Sawfish script (Sawfish Community)
JL Visual Studio Code source code (Microsoft)
JLA VisualPro BMP Image
JLAB JLab Program Source Code (Linova)
JLC Sawfish Byte Compiled Lisp-based Script
JLF JetLinks Bookmark Managment
JLK Java Keytool Java Keystore File
JLP JLIP Video Capture (Video Producer) Index Format Display (JVC)
JLQM Samsung Notes Samsung memos data
JLS JAWS for Windows (Freedom Scientific)
JLS JPEG-LS File
JMA Super Nintendo NSRT Compressed Game (Nintendo)
JMAN Illum Source Irohaserver File
JMD Paint Shop Pro Image Map Settings (Corel Corporation)
JMF Java Multimedia File (Sun)
JMG 16 Bit Adaptive RLE Compressed Bitmap
JMH JPEG File Interchange Format
JMK Code Crusader Build Script (New Planet Software)
JMM Digital Camera Video Clip (JVC)
JMP SAS discovery chart-to-statistics file (SAS Institute Inc.)
JMS SpamProx Blocking List (Dewqs' Tribes)
JMS UltraForce Music Format
JMS Voxtron TeleButler Graphical Voice Response Call Flow
JMX Hot Potatoes project (Half-Baked)
JMX JMeter test (Apache)
JN1 Epic MegaGames Jill of the Jungle Data File
JNB SigmaPlot Workbook File (SYSTAT Software Inc.)
JNC Communication Log File
JNG JPEG Network Graphic Bitmap
JNK Junk
JNL Ingres Journal File (Computer Associates International, Inc.)
JNL ISC BIND Journal File (Internet Systems Consortium)
JNL Journal Macro Data File (Chosen Software)
JNL WINDEV Log File (PC SOFT)
JNLP Java web start (Oracle)
JNT Windows Journal journal file (Microsoft Corporation)
JOB File Investigator script (RobWare)
JOB Nesting product manufacturing job (Metamation)
JOB OrCAD PCB Designer PCB external job (Cadence)
JOB Survey Pro job (Tripod Data Systems)
JOB System Center automated job (Microsoft)
JOB Task Scheduler task object (Microsoft)
JOB Workload Planner automated job (ASG)
JOBOPTIONS Acrobat Job Options File (Adobe Systems Incorporated)
JOBS VirtualDub Job Control File (Avery Lee)
JOC Context4 DOS Word Processor File
JOCL Java Object Configuration Language
JOD MS.Jet.OLEDB.4.0 Related File
JOI Xboard Join Conferences File
JOINED HJSplit Default Joined File (Freebyte.com)
JOR Gupta SQLWindows Journal
JOR SQL Server Journal File (Microsoft Corporation)
JOT JDesignerPro File
JOT Jot + Notes Note Data File (King Stairs Software)
JOT WinJottr Desktop Note
JOU VAX Edt Editor Journal File
JOURNAL Apple II operating system Golden Orchard Apple II CD Rom file
JOURNAL_INFO_BLOCK Linux Kernel Filesystem Journaling
JOY Joystick Calibration File
JOY Trackjoy GUS Tracker Module
JP IrfanView, JPEGView and most image viewers Storing Images
JP0 various image viewers and editors JPEG 2000 Image
JP2 Jeoparty II presentation (Matthew Hagaman)
JP2 Photoshop image (Adobe)
JP2 Preview image (Apple)
JP2 XnView image (XnSoft)
JP3 Electric Quilt File
JP4 Electric Quilt File
JP5 Electric Quilt File
JPA eXtract Wizard backup file (Akeeba Ltd.)
JPA JoomlaPack backup file (Open Source Matters, Inc.)
JPC Japan Picture Format
JPC JPEG-2000 Code Stream Bitmap
JPC Jprobe Coverage Memory Snapshot (Quest Software Inc.)
JPE Photos image (Microsoft)
JPE Preview image (Apple)
JPE XnView image (XnSoft)
JPEG 7-Zip archive (Igor Pavlov)
JPEG Photos image (Microsoft)
JPEG Photoshop image (Adobe)
JPEG Preview image (Apple)
JPEGENX egis Encrypted JPEG File (HiTRUST Inc.)
JPF BizPlanBuilder business plan contents (JIAN)
JPF IrfanView image (Irfan Skiljan)
JPF Photoshop image (Adobe)
JPF SMILE VIEW Map mass spectrometry data (JEOL)
JPF XnView image (XnSoft)
JPG 7-Zip archive (Igor Pavlov)
JPG CompactDRAW image (MediaChance)
JPG Firefox compressed image (Mozilla)
JPG GIMP image (GIMP Team)
JPG Photos image (Microsoft)
JPG Photoshop image (Adobe)
JPG Preview image (Apple)
JPGENX egis Encrypted JPG File (HiTRUST Inc.)
JPGLARGE Adobe Photoshop Large JPEG preview
JPGTHUMB various image viewers and operating systems JPEG thumbnail
JPGX paint.net Extended Image Format
JPG_ Digital Cameras, Image Editors, Web Browsers Storing images
JPG_128X160 Image viewers, web browsers, mobile devices Resized JPEG image
JPG_128X96 Image viewers, web browsers, image editors Resized JPEG images
JPG_160X120 Image processing and viewing software Resized JPEG image
JPG_160X128 Image viewers, web browsers, graphic editors Resized JPEG
JPG_240X320 Image viewers, web browsers, mobile devices Resized JPEG images
JPG_320X240 Image viewers, web browsers, mobile devices Resized JPEG image
JPG_320X320 Web browsers, image viewers, content management systems Resized JPEG image
JPG_56X42 Image processing software; Automation scripts Resized JPEG image
JPG_LARGE Adobe Photoshop Large JPEG image
JPG_LBK Image editing/management software JPEG backup
JPG_NOMEDIA Operating System (Android) Hidden image
JPG_SMALL various image processing and viewing software Small JPEG image
JPG_T JPG Image File
JPG_THUMB gd-jpeg v1 and v2 JPEG thumbnail
JPH Jprobe Memory Debugger Memory Snapshot (Quest Software Inc.)
JPI Jupiter Document (Elfin Sp. z o.o.)
JPL Jprobe Settings File (Quest Software Inc.)
JPL Siren Jukebox
JPM LuraDocument.jpm Compressed PDF File (Algo Vision LuraTech GmbH)
JPN Photomodeler Lite File
JPOW JPowered Java Bar Charts
JPP Jigsaw Puzzle Player Puzzle Definition (B&P Games B.V.)
JPP Jprobe Profiler Memory Snapshot (Quest Software Inc.)
JPR Javasockets File
JPR Oracle JDeveloper Model JProject
JPS Akeeba Backup website data backup (Akeeba)
JPS ID Flow design (Jolly)
JPS Jigsaw Puzzle Player puzzle completion status (Bits and Pixels)
JPS StereoPhoto Maker stereoscopic image (Muttyan)
JPS XnView stereoscopic image (XnSoft)
JPT Jprobe Threadalyzer Memory Snapshot (Quest Software Inc.)
JPT Print Studio Template (Jolly, Inc.)
JPX jAlbum image information (jAlbum)
JPX JBuilder project (Embarcadero)
JPX PaintShop image (Corel)
JPX Preview image (Apple)
JPX XnView image (XnSoft)
JP_ Web browsers, Download managers Partially downloaded image
JQX Windows Help Related File (Microsoft Corporation)
JQZ JQuiz Quiz File
JR Apple II operating system Golden Orchard Apple II CD Rom file
JR2 FishSim Add-on (J.C.Spooner)
JRC Jrchive Compressed Archive
JREP Juniper Networks Devices Juniper Reports Archive
JRF The Jumbot Bot Level Navigation File
JRF winIDEA Workspace (Programming Project File) (iSYSTEM AG)
JRL BioWare Aurora Engine Journal (BioWare Corp.)
JRL Top Secret Crypto Gold Top Secret Journal File (TAN$TAAFL Software Company)
JRP Electric Quilt File
JRP Pg4uw Job Report File (Elnec s.r.o.)
JRPRINT JasperReports Report output
JRPXML JasperReports JasperReports print file
JRS Exchange Server reserve transaction log (Microsoft)
JRXML JasperReports JRXML Report Definition (JasperSoft Corporation)
JS Firefox settings (Mozilla)
JS JetScript print job (JetScript Developer)
JS Node script (OpenJS Foundation)
JS Visual Studio Code script (Microsoft)
JSA Java Runtime Environment Java Archive
JSB JavaScript Bean (JSB) File
JSB JAWS for Windows Script Binary File (Freedom Scientific)
JSBUNDLE React Native JavaScript Code Bundle
JSC JavaScript compiled JavaScript file (Mozilla Foundation)
JSCRIPT GoLive JavaScript (Adobe Systems Incorporated)
JSD eFAX JetSuite document file (j2 Global, Inc.)
JSD JAWS script documentation file (Freedom Scientific)
JSD Jazar information file (Jazer Solutions, LLC)
JSD JetSuite Pro document file (Hewlett-Packard)
JSD Paint Shop Pro image slice settings file (Corel Corporation)
JSDB JumpStart Database (Jumpstart-it.com)
JSE AdoPiSoft executable (AdoPiSoft)
JSE Visual Studio script (Microsoft)
JSF Acrobat data (Adobe)
JSF Eclipse script (Eclipse Foundation)
JSF Fireworks script (Adobe)
JSF Jahshaka scene (The Jahshaka Project)
JSF Project64 joystic settings (Project64 Developers)
JSFL Flash Javascript (Adobe Systems Incorporated)
JSH JAWS for Windows Script Header File (Freedom Scientific)
JSL Paint Shop Pro Shapes File (Corel Corporation)
JSL Visual J# Code (Microsoft Corporation)
JSM Gray Design Associates Jigsaws Galore Jigsaw File
JSM JAWS for Windows Script Message File (Freedom Scientific)
JSM Jig ShapeMap (Steamboat Software)
JSM JugWin Jigsaw
JSML JSim Markup Language File (University of Washington)
JSN Shield Now Shield File (JetSoft Corporation)
JSO Various Programs JISO Compressed Disk Image File
JSON Firefox bookmark backup (Mozilla)
JSON Gears manifest (Google)
JSON Visual Studio Code json-encoded document (Microsoft)
JSONC jsonc source code file (komkom)
JSONL jq Structured data interchange
JSONLZ4 Firefox compressed Firefox bookmarks backup file (Mozilla)
JSON_ Web browsers, text editors, specialized JSON editors, and various programming languages Data interchange
JSP 7-Zip compressed data (Igor Pavlov)
JSP Acrobat document (Adobe)
JSP Eclipse dynamic web page (Eclipse Foundation)
JSP Java dynamic web page (Oracle)
JSP XnView compressed (XnSoft)
JSP10 Java Server Page (Sun)
JSPA WebWork Framework JSP Action
JSPF JSP Page Fragment (Sun)
JSPX JavaServer Pages engine XML Web Component
JSRC Jabaco Source Code Programming Language (Jabaco)
JSS Gray Design Associates Jigsaws Galore Saved Game Jigsaw File
JSS JAWS for Windows Script Source File (Freedom Scientific)
JSS JSheet
JSS JugWin Jigsaw
JST Code Crusader Symbol Database (New Planet Software)
JST Jnes Saved Game State File (JaboSoft)
JSV HyperRail 3D Coaster Design Construction File
JSV Japanese Flash Card File
JSV Java Structure Viewer
JSV VXML JavaServer Page
JSW WML JavaServer Page
JSX After Effects script (Adobe)
JSX ExtendScript Toolkit script (Adobe)
JSX Visual Studio Code application module (Microsoft)
JSXBIN Adobe InDesign compiled InDesign scripts
JT CATIA 3D model or drawing (Dassault Systèmes)
JT JT Fax data (Hayes)
JT JT2Go 3D model or drawing (Siemens)
JT Solid Edge 3D model or drawing (Siemens)
JTD Ichitaro Document (Justsystem Corporation)
JTF Hayes JT Fax
JTF JPEG Tagged Interchange Format Image
JTIF JPEG Tagged Interchange Format Image
JTK Java ToolKit File (Sun)
JTL JTool Data File (Behavioral Health Quality)
JTP JetForm Design data (JetForm)
JTP Journal journal (Microsoft)
JTR Jelbert GeoTagger Location Database (Jelbert Consulting)
JTSL JobTracker Job Application Tracking
JTX Database Transaction log Database Transaction log file (Microsoft)
JUDI JudoScript Source Code File (JudoScript.COM)
JUDO JudoScript Source Code File (JudoScript.COM)
JUL Inteliweb Program Registration and Validation (InVision Marketing, Inc. & Inteliweb.net)
JUP Code Crusader User-Specific Project Preferences (New Planet Software)
JUPIDU Bystronic BySoft 7 Bending Program
JURL JustUrls Button File (Eastern Digital Pty. Ltd.)
JUT Jutvision Scene
JVC Digital Camera File
JVCFNRK5 Adobe Photoshop JPEG image
JVS Jpeg Video Sequencer Sequenced JPEG Images
JVSG IP Video System Design Tool IP Video System Design Tool (CCTV Design Software)
JW Jigsaw Terminal File
JW Justwrite Text
JW Legacy Version 1.1
JW MS Wordpad, Works for windows v3.0 & 4.0
JW Q & A Write for Windows 3.0
JWC JewelCase Maker Saved File (NewTech Infosystems Inc.)
JWC Jw_cad Data (Jiro Shimizu & Yoshifumi Tanaka)
JWL Easy CD Creator's CD Label (Sonic Solutions)
JWL Jewel Case Creator CD Disc Case
JWL Justwrite Text File Library
JWP Easy CD Creator Label File (Sonic Solutions)
JWP JWP Document
JWPUB JW Library Jehovah's Witness publications
JWR LegaSuite GUI J Walk Runtime File (Seagull Software Systems, Inc.)
JWS JDeveloper Page Layout (Oracle Corporation)
JWS Oracle WebLogic Server Java Web Service annotated file (Oracle)
JWT Web servers and applications Authentication and Authorization
JXDM Multi-Channel Server (MCS) Markup Editor Java Server Page with XDIME Markup/Java Code (Volantis Systems Ltd.)
JXL JPEG XL Image Codec JPEG XL image
JXR IrfanView image (Irfan Skiljan)
JXR Photos image (Microsoft)
JXR XnView image (XnSoft)
JXT Daqarta Extended Audio Data (Interstellar Research)
JXX C++ Header File
JZ JamesZhu Internet Browser Database File (JamesZhu, Inc.)
JZZ Jazz Spreadsheet

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