File Extensions - J

ExtensionSummary
.JJava Source File
.J01Akeeba Multi-part Backup Archive
.J2CJPEG 2000 Code Stream
.J2IJazz 2 Internet Link File
.J2KJPEG 2000 Image
.J2LJazz Jackrabbit 2 Level File
.J3OjMonkeyEngine 3D Scene
.J64Atari Jaguar Game ROM
.J6IRicoh Camera Image File
.JAJet Archive
.JACJaStaCry Encrypted File
.JADJava Application Descriptor File
.JAGAtari Jaguar Game ROM
.JAMJam STAPL File
.JAPjAlbum Project Settings File
.JARJava Archive File
.JAR.PACKPack200 Packed Jar File
.JARCWiiU or 3DS Archive File
.JARVISJarvis Subscriber File
.JASPaint Shop Pro Compressed Graphic
.JASPERJasperReports Data File
.JAVJava Source File
.JAVAJava Source Code File
.JB2JBIG2 Image
.JBCJam STAPL Byte-Code File
.JBEAMBeamNG Vehicle Definition Format
.JBFPaint Shop Pro Browser Cache File
.JBGJoint Bi-level Image Group File
.JBIMotoman Robot Job File
.JBIGJoint Bi-level Image Group File
.JBIG2JBIG2
.JBKJuno Backup File
.JBMPJAmes OS Bitmap Image
.JBRPaint Shop Pro Brushes File
.JBXMicrosoft Play It! Music File
.JCFlashGet Partial Download
.JC!FlashGet Incomplete Download
.JCDJewelCAD Design
.JCEKSJCEKS Keystore File
.JCLJCloze File
.JCLICJClic Project File
.JCPJCreator Project File
.JCRNonogram Puzzle File
.JCRYPTJCRYPT File
.JCWJCross File
.JCZLiquid Motion Animation
.JDATJ&ASoft Data File
.JDBSymantec Endpoint Protection Update File
.JDCJDownloader Links File
.JDFAdobe Acrobat Job Definition File
.JDISJD Inno Setup Configurator
.JDPBlackBerry JDE Application Project
.JDRIROAD Dash Cam Video File
.JDXJCAMP-DX Data File
.JEDXilinx JEDEC Programming File
.JEFJanome Embroidery Format
.JEMJSON Entity Model File
.JETJET Database File
.JEXJoplin Export File
.JFIJPEG File Interchange Image
.JFIFJPEG File Interchange Format
.JFPROJJSON Font Project File
.JG4BigJig Jigsaw Puzzle
.JGCJungleTac ROM File
.JGCSCSEditPad Custom Syntax Coloring Scheme File
.JGWJPEG World File
.JGZGzipped Javascript File
.JHHTetris Online Poland Game Data Archive
.JHTMLJava HTML Web Page
.JIADigital Photo Navigator Album
.JICJTAG Indirect Configuration File
.JIFJPEG Interchange Format Image
.JIFFJPEG Image File Format
.JIGSAWJigsaw Explorer Save File
.JISJapanese Industry Standard Text
.JKBJedi Knight Bot File
.JKMJAWS Key Map File
.JKSJava Keystore File
.JLJulia Source Code File
.JLRJuliar Source Code File
.JLSJPEG-LS Image
.JMCJM-Crypt Encrypted File
.JMCEJM-Crypt Encrypted File
.JMCKJM-Crypt Key File
.JMCPJM-Crypt Encrypted File
.JMCRJM-Crypt Encrypted File
.JMCXJM-Crypt Encrypted File
.JMDLWiiU or 3DS Model File
.JMFJackhammer Project
.JMOTWiiU or 3DS Animation File
.JMPJMP Data File
.JMSMasher Project
.JMTJMatch File
.JMVJnes Movie File
.JMXJMix File
.JNBSigmaPlot Notebook File
.JNGJPEG Network Graphic
.JNILIBJNI Library
.JNLPJava Web Start File
.JNPJava Web Start File
.JNRJoinNet Recording File
.JNTWindows Journal File
.JNXBirdsEye JNX Raster Map
.JOjo Audio File
.JO-7Zjo Audio File
.JOBWindows Task Scheduler Job File
.JOBOPTIONSAdobe Joboptions File
.JOEJOE Document
.JOINEDHJ-Split Data File
.JOYCryENGINE Facial Editor Joystick File
.JP1Japanese (Romaji) Text File
.JP2JPEG 2000 Core Image File
.JPAAkeeba Backup Archive
.JPCJPEG 2000 Code Stream File
.JPDJava Process Definition
.JPEJPEG Image
.JPEGJPEG Image
.JPFJPEG 2000 Image
.JPGJPEG Image
.JPG-LARGELarge JPEG Image
.JPG2JPEG 2000 Image
.JPGWJPEG World File
.JPHJProbe Memory Snapshot
.JPNWindows Japanese Noise-Word List File
.JPRJBuilder Project
.JPSAkeeba Backup Archive
.JPWWorld File for JPEG
.JPXJBuilder Project
.JQ2SAVEGAMEJewel Quest 2 Saved Game
.JQ3SAVEGAMEJewel Quest III Saved Game
.JQZJQuiz File
.JRCPCjr Cartridge ROM File
.JRPRINTJasperReports Print File
.JRSExchange Reserve Transaction Log File
.JRTFJAmes OS Rich Text File
.JRXMLJasperReports Layout File
.JRZPSP Game Data File
.JSJavaScript File
.JSDHP JetSuite Document
.JSDAJazer Data File
.JSEJScript Encoded File
.JSFProject64 Joystick File
.JSFLAnimate JSFL Script File
.JSHJsh Script
.JSLJMP Script
.JSONJavaScript Object Notation File
.JSONLJSON Lines File
.JSONLZ4Compressed Firefox User Profile Data File
.JSPJava Server Page
.JSPAJava Servlet Alias
.JSPFJava Server Page Fragment
.JSPXXML Java Server Page
.JSSJAWS Script
.JSTJavaServer Page Document
.JSXReact JavaScript File
.JSXBINBinary ExtendScript Script File
.JSXINCExtendScript Included Script File
.JTJT Open CAD File
.JTBACKUPJust Type Backup File
.JTDJustSystems Ichitaro Document
.JTEXWiiU or 3DS Texture File
.JTFJPEG Tagged Interchange Format
.JTPWindows Journal Template
.JTSCyberlink AVCHD Video File
.JTVJRiver TV File
.JTXESE Transaction Log
.JUDEJUDE Project File
.JUKJuka Source Code File
.JVSJavaScript Proxy Autoconfig File
.JVSGVideo Surveillance Project
.JVSGZCompressed Video Surveillance Project
.JWCJewelCase Maker File
.JWLRoxio Jewel Case File
.JWPUBJehovah's Witnesses Publication
.JWSJava Workspace Settings File
.JXLJPEG XL Image
.JXRJPEG XR Image