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Japanese language translation
File type: Text file
A ja file extension is related to the Japanese language translation files used by many software programs.
Found 3 different file type records with the same ja filename suffix.
File type category:
Text file
Date updated: December 31, 2024
The ja file extension is often used by various programs for localization files with Japanese language translations.
The *.ja files are often in just simple text or XML format and contain localized text.
Translation files are mostly in simple text format. Openable with any common text editor like Notepad++, Sublime Text.
Probably cannot be converted to other formats.
Software applications that can open ja files:
Microsoft Windows
Apple macOS / Mac OS X
Linux/Unix
Software applications that can edit ja files:
Microsoft Windows
Apple macOS / Mac OS X
Linux/Unix
Software capable of saving ja files:
Microsoft Windows
Apple macOS / Mac OS X
Linux/Unix
File type category:
Archive and compressed file
Date updated: June 27, 2025
The ja file extension is associated with archive file format used by some web browsers based on popular Firefox browser from Mozilla.
The ja file stores various internal parts of these web browsers. JA format is used to optimize web browser speed.
By default, the file is called omni.ja.
The ja format is similar to ZIP, you can rename *.ja file to *.zip and open it with some compression tools.
Probably cannot be converted to other formats.
Software applications that handle other tasks involving ja files:
Apple macOS / Mac OS X
Linux/Unix
Multiplatform
File type category:
Game file
Date updated: July 31, 2018
The ja file extension is associated with the Trainz Railroad Simulator, a video game for Microsoft Windows operating system, developed by Auran Games.
The ja file stores various game data.
You cannot open this file type manually, it is accessed by the game automatically.
These games files cannot be converted to anything else. However, sometimes modding.
Software applications that handle other tasks involving ja files:
Microsoft Windows
Language
