Main » Quick Reference »

Data Formats and File Extensions: J

Find data file formats and file extensions that start with the letter J, or view thousands of formats in the complete list.

With literally thousands of data file formats employed by Windows and Window-based apps, keeping track of all the file extensions employed by your software applications and programs can be quite a challenge. Fortunately, Webopedia's Complete List of Data File Formats and File Extensions makes it quick and easy to sift through thousands of file extensions and data file formats to find exactly what you need. You can peruse the full list or search for data formats and file extensions based on the letter they start with from the table below.

Number  Symbol  A  B  C  D  E  F  G  H  I  J  K 
L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z  Full List


  Data File Formats that Begin with the Letter 'J'

.j01File Extension from ADP Payroll Company
.jadJava Application Descriptor extension (for installing MIDlets)
.jarJava archive file
.javJava source code file
.javaJava source code file
.jbcJam Byte-Code Hex file
BestCrypt File
.jbdDatafile (SigmaScan)
.jbfPaint Shop Pro browser file
.jbkJuno Backup file
.jbrJasc Paint Shop Pro Brush
.jbxProject file (Project Scheduler 4)
.jdtAccelio Capture Classic Filler
.jefJanome NH10000 Sewing Machine file
.jetFax (Hybrid JetFax)
.jffBitmap graphics (JPEG File Interchange Format)
.jfifJPEG image
.jfxJ2 Fax File
.jhtmlDynamo Server Page
.jifJPEG/JIFF Image
Jeff's Image Format
.jmxJMeter file
.jnbSigma Plot Workbook file
.jnlIngres Journal file
.jnlpJava Web Start file
.jntWindows Journal Note file
.jobJob file
Task Scheduler Task Object
AI Research file
QuestVision Vector Graphics file
.jorJournal file SQL
.jouJournal backup (VAX Edt editor)
.jp2JPEG 2000 file
.jpcGraphics (Japan PIC)
.jpegJPEG image
.jpfJPEG 2000 file
.jpgBitmap graphics (Joint Photography Experts Group)
.jpsStereo Image
.jpxJBuilder Project file
.jsMicrosoft Scripting Language "JScript" file extension
.jsdeFAX Jet Suite Document
.jseJScript Encoded Script file
.jsfFireworks Batch Script file
.jshHenter-Joyce, Inc. Jaws Script Header file
.jsonJavaScript Object Notation file
.jspJava Server page
.jtfFax (Hayes JT Fax)
Bitmap graphics (JPEG Tagged Interchange Format)
.jtpJetform file
.jup(New Planet Software) Code Crusader user's project preferences file
.jwText document (JustWrite)
.jwlLibrary (JustWrite)
.jwpEasy CD Creator Label file
JWP Document
.jxrJPEG XR file
.jzzSpreadsheet (Jazz)

Recommended Reading: An Introduction to Data File Formats and Their File Extensions

Number  Symbol  A  B  C  D  E  F  G  H  I  J  K  L  M  N  O  P  Q  R  S  T  U  V  W  X  Y  Z  Full List


Texting & Chat Abbreviations

From A3 to ZZZ this guide lists 1,500 text message and online chat abbreviations to help you translate and understand today's texting lingo. Read More »

List of Well-Known TCP Port Numbers

Port numbers 0 to 1024 are reserved for privileged services and designated as well-known ports. This list of port numbers  are specified in... Read More »

Computer Architecture Study Guide

Computer architecture provides an introduction to system design basics for most computer science students. Read More »

Network Fundamentals Study Guide

Networking fundamentals teaches the building blocks of modern network design. Learn different types of networks, concepts, architecture and... Read More »

The Five Generations of Computers

Learn about each of the five generations of computers and major technology developments that have led to the computing devices that we use... Read More »