| .j |
JAR Archive |
| .j |
Java Source File |
| .j |
JPEG Image |
| .j2c |
JPEG 2000 Code Stream |
| .j2i |
Jazz 2 Internet Link File |
| .j2k |
JPEG 2000 Image |
| .j2l |
Jazz Jackrabbit 2 Level File |
| .jad |
Java Application Descriptor File |
| .jam |
PS3 Unreal Tournament 3 Mod File |
| .jam |
JAM Musical Score |
| .jar |
Java Archive |
| .jarvis |
Jarvis Subscriber File |
| .jas |
Paint Shop Pro Compressed Graphic |
| .jav |
Java Source File |
| .java |
Java Source Code File |
| .jbf |
Paint Shop Pro Browser Cache File |
| .jbig |
Joint Bi-level Image Group File |
| .jbk |
Juno Backup File |
| .jbr |
Paint Shop Pro Brushes File |
| .jc |
FlashGet Partial Download |
| .jc! |
FlashGet Incomplete Download |
| .jcz |
Liquid Motion Animation |
| .jed |
Xilinx JEDEC Programming File |
| .jef |
Janome Embroidery Format File |
| .jfi |
JPEG File Interchange Image |
| .jfif |
JPEG File Interchange Format |
| .jg4 |
BigJig 4 Jigsaw Puzzle |
| .jgz |
Gzipped Javascript File |
| .jhtml |
Java HTML Web Page |
| .jia |
Digital Photo Navigator Album |
| .jic |
JTAG Indirect Configuration File |
| .jic |
Java Icon File |
| .jif |
JPEG Interchange Format Image |
| .jiff |
JPEG Image File Format |
| .jis |
Japanese Industry Standard Text |
| .jng |
JPEG Network Graphic |
| .jnlp |
Java Web Start File |
| .jnp |
Java Web Start File |
| .jnt |
Windows Journal File |
| .jp1 |
Japanese (Romaji) Text File |
| .jp2 |
JPEG 2000 Core Image |
| .jpc |
JPEG 2000 Code Stream File |
| .jpd |
Java Process Definition |
| .jpd |
Joint PhotoDefiner Image |
| .jpe |
JPEG Image |
| .jpeg |
JPEG Image |
| .jpf |
JPEG 2000 Image |
| .jpg |
JPEG Image |
| .jph |
JProbe Memory Snapshot |
| .jpr |
JBuilder Project |
| .jpw |
World File for JPEG |
| .jpx |
JPEG 2000 Image File |
| .jpx |
JBuilder Project |
| .jrs |
Exchange Reserve Transaction Log File |
| .js |
JScript Executable Script |
| .js |
JavaScript File |
| .jse |
JScript Encoded File |
| .jsf |
Project64 Joystick File |
| .json |
JavaScript Object Notation File |
| .jsp |
Jakarta Server Page |
| .jspa |
Java Servlet Alias |
| .jspf |
JSON Playlist File |
| .jspx |
XML Jakarta Server Page |
| .jsx |
ExtendScript Script File |
| .jt |
JT Open CAD File |
| .jtf |
JPEG Tagged Interchange Format |
| .jude |
JUDE Project File |
| .jvs |
JavaScript Proxy Autoconfig File |
| .jws |
Java Workspace Settings File |
| .jws |
Java Web Services File |
