J File Extensions

File types with extensions that start with the letter J.

Extension	File Type	File Description
.j	Developer	Java Source File
.j	Compressed	JAR Archive
.j	Raster Image	JPEG Image
.j2c	Raster Image	JPEG 2000 Code Stream
.j2i	Game	Jazz 2 Internet Link File
.j2k	Raster Image	JPEG 2000 Image
.j2l	Game	Jazz Jackrabbit 2 Level File
.jad	Misc	Java Application Descriptor File
.jam	Audio	JAM Musical Score
.jam	Game	PS3 Unreal Tournament 3 Mod File
.jar	Executable	Java Archive File
.jar.pack	Compressed	Pack200 Packed Jar File
.jas	Raster Image	Paint Shop Pro Compressed Graphic
.jasper	Data	JasperReports Data File
.jav	Developer	Java Source File
.java	Developer	Java Source Code File
.jbf	Image	Paint Shop Pro Browser Cache
.jbig	Image	Joint Bi-level Image Group File
.jbk	Backup	Juno Backup File
.jbr	Raster Image	Paint Shop Pro Brushes File
.jc	Misc	FlashGet Partial Download
.jc!	Misc	FlashGet Incomplete Download
.jcz	Web	Liquid Motion Animation
.jdb	Data	Symantec Endpoint Protection Update File
.jed	Developer	Xilinx JEDEC Programming File
.jef	Data	Janome Embroidery Format
.jfi	Image	JPEG File Interchange
.jfif	Raster Image	JPEG File Interchange Format
.jg4	Game	BigJig Jigsaw Puzzle
.jgz	Compressed	Gzipped Javascript File
.jhtml	Web	Java HTML Web Page
.jia	Raster Image	Digital Photo Navigator Album
.jic	Developer	JTAG Indirect Configuration File
.jic	Compressed	Java Icon File
.jif	Raster Image	JPEG Image File
.jiff	Raster Image	JPEG Image File Format
.jis	Text	Japanese Industry Standard Text
.jmp	Data	JMP Data File
.jng	Raster Image	JPEG Network Graphic
.jnlp	Web	Java Web Start File
.jnt	Data	Windows Journal File
.job	Data	MetaCAM Nest Job File
.joboptions	Data	Adobe Joboptions File
.joined	Data	HJ-Split Data File
.jp1	Text	Japanese (Romaji) Text File
.jp2	Raster Image	JPEG 2000 Core Image File
.jpc	Raster Image	JPEG 2000 Code Stream File
.jpd	Developer	Java Process Definition
.jpd	Raster Image	Joint PhotoDefiner Image
.jpe	Raster Image	JPEG Image
.jpeg	Raster Image	JPEG Image File
.jpf	Raster Image	JPEG 2000 Image
.jpg	Raster Image	JPEG Image File
.jph	Data	JProbe Memory Snapshot
.jpr	Developer	JBuilder Project
.jpw	Image	World File for JPEG
.jpx	Developer	JBuilder Project
.jpx	Raster Image	JPEG 2000 Image File
.jrprint	Data	JasperReports Print File
.jrs	Misc	Exchange Reserve Transaction Log File
.jrxml	Data	JasperReports Layout File
.js	Executable	JScript Executable Script
.js	Web	JavaScript File
.jse	Executable	JScript Encoded File
.jsf	Settings	Project64 Joystick File
.json	Developer	JavaScript Object Notation File
.jsp	Web	Java Server Page
.jspa	Web	Java Servlet Alias
.jspx	Web	XML Java Server Page
.jsx	Executable	ExtendScript Script File
.jt	3D Image	JT Open CAD File
.jtf	Raster Image	JPEG Tagged Interchange Format
.jude	Data	JUDE Project File
.jvs	Web	JavaScript Proxy Autoconfig File
.jwl	Raster Image	Roxio Jewel Case File
.jws	Web	Java Web Services File
.jws	Settings	Java Workspace Settings File
.jxr	Raster Image	JPEG XR Image