Letter J: Data Formats & File Extensions

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’

.j01 File Extension from ADP Payroll Company
.jad Java Application Descriptor extension (for installing MIDlets)
.jar Java archive file
.jas Graphics
.jav Java source code file
.java Java source code file
.jbc Jam Byte-Code Hex file
BestCrypt File
.jbd Datafile (SigmaScan)
.jbf Paint Shop Pro browser file
.jbk Juno Backup file
.jbr Jasc Paint Shop Pro Brush
.jbx Project file (Project Scheduler 4)
.jdt Accelio Capture Classic Filler
.jef Janome NH10000 Sewing Machine file
.jet Fax (Hybrid JetFax)
.jff Bitmap graphics (JPEG File Interchange Format)
.jfif JPEG image
.jfx J2 Fax File
.jhtml Dynamo Server Page
.jif JPEG/JIFF Image
Jeff’s Image Format
.jmx JMeter file
.jnb Sigma Plot Workbook file
.jnl Ingres Journal file
.jnlp Java Web Start file
.jnt Windows Journal Note file
.job Job file
Task Scheduler Task Object
AI Research file
QuestVision Vector Graphics file
.jor Journal file SQL
.jou Journal backup (VAX Edt editor)
.jp2 JPEG 2000 file
.jpc Graphics (Japan PIC)
.jpeg JPEG image
.jpf JPEG 2000 file
.jpg Bitmap graphics (Joint Photography Experts Group)
.jps Stereo Image
.jpx JBuilder Project file
.js Microsoft Scripting Language “JScript” file extension
.jsd eFAX Jet Suite Document
.jse JScript Encoded Script file
.jsf Fireworks Batch Script file
.jsh Henter-Joyce, Inc. Jaws Script Header file
.json JavaScript Object Notation file
.jsp Java Server page
.jtf Fax (Hayes JT Fax)
Bitmap graphics (JPEG Tagged Interchange Format)
.jtp Jetform file
.jup (New Planet Software) Code Crusader user’s project preferences file
.jw Text document (JustWrite)
.jwl Library (JustWrite)
.jwp Easy CD Creator Label file
JWP Document
.jxr JPEG XR file
.jzz Spreadsheet (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

This article was originally published on June 24, 2010

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