A j file extension can also be found as specially compressed JPEG files in JFIF standard. Use .jpg file extension instead.

There are 2 other file types using
the J file extension!

empty icon.j - JAR archive

empty icon.j - Java source code

Detailed description

Software that open j file

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J file extension - JPEG/JFIF image

What is j file? How to open j files?

File type specification:

Bitmap image file type icon Bitmap image file type

j file icon: j filetype icon

The j file extension is also occasionally used for standard JPEG images., specially those in the JPEG File Interchange Format.

JFIF is an image file format standard. It is a format for exchanging JPEG encoded files compliant with the JPEG Interchange Format (JIF) standard. It solves some of JIF's limitations in regard to simple JPEG encoded file interchange. As with all JIF compliant files, image data in JFIF files is compressed using the techniques in the JPEG standard, hence JFIF is sometimes referred to as "JPEG/JFIF".

For more information see: jpg file extension record in our database.

Updated: February 5, 2019

The default software associated to open j file:

XnView MP icon

Pierre-Emmanuel Gougelet logoXnView MP  Multiplatform software

Company or developer:
Pierre-Emmanuel Gougelet

A free (for non-commercial purposes) powerful cross-platform media browser, viewer and converter. Compatible with more than 500 formats and also supports export to 70 different file formats. It works on Windows, Linux and macOS (OS X).

Help how to open:

Rename file to *.jpg and use any common image viewer.

How to convert:

See conversions from *.jpg to any other graphics formats.

List of recommended software applications associated to the .j file extension

Recommended software programs are sorted by OS platform (Windows, macOS, Linux, iOS, Android etc.)
and possible program actions that can be done with the file: like open j file, edit j file, convert j file, view j file, play j file etc. (if exist software for corresponding action in File-Extensions.org's database).

j file viewer - programs that view j file - JPEG/JFIF image

Programs supporting the exension j on the main platforms Windows, Mac, Linux or mobile. Click on the link to get more information about XnView MP for view j file action.

Multiplatform:

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