Notes about the JJ file extension:
Incorrect file associations could be the result of underlying issues within your PC system. As such it is highly recommended to scan your PC for invalid registry entries, unused processes and other unfavourable system settings to identify slowdown issues.
The JJ file type is primarily associated with 'C64 Doodle Compressed File'.
Detailed information for file extension JJ:
Primary association: C64 Doodle Compressed File
Other applications associated with file type JJ:
Important: Invalid file associations could be the result of underlying issues within your Windows PC. It is highly recommended that you scan your PC for invalid registry entries, unused processes and other slowdown issues.
To view technical data on file-extension JJ click this link
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System Info for File Extension .JJ
The following listing is compiled from the database produced by the 'Associate This!' program, selected data from the main FILExt database and information FILExt collected directly
from user systems.
ProgramID: GraphicsConverterPro.jj, FileType: Doodle C64 Compressed, AppName: GraphicsConverter-reg
EXEFile: %ProgramFiles%\XnView\xnview.exe %1