Files with JJ extension could in the past be found as drawings made in Doodle program on Commodore 64.

There is one other file type using
the JJ file extension!

jj icon.jj - JavaCC data

Detailed description

Software that works with jj file extension

Add comment

Bookmark & share this page with others:

JJ file extension - Doodle C64 Compressed image format

What is jj file? How to open jj files?

File type specification:

Bitmap image file type icon Bitmap image file type

jj file icon: jj filetype icon

The JJ file extension was in the past used for a special compressed image format used on Doodle program for Commodore 64. Doodle was a popular graphics editor on that platform.

Help how to open JJ files:

You should be able to view these files using XnView.

How to convert file with extension JJ:

As far as we know, this .jj file type can't be converted to any other file format. This is usually the case of system, configuration, temporary, or data files containing data exclusive to only one software and used for its own purposes. Also some proprietary or closed file formats cannot be converted to more common file types in order to protect the intellectual property of the developer, which is for example the case of some DRM-protected multimedia files.

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

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

  • View jj file

jj file viewer - programs that view jj file - Doodle C64 Compressed image format

Click on the link to get more information about XnView MP for view jj file action.


Previous file extension
JIFF file extension > Bitmap image file types

Next file extension
file extension JLS


Follow us!

Enter any file extension without dot (e.g. pdf)
Search for file extension details and associated application(s)

RSS feed