Opening a JA File

The JA file type is primarily associated with Trainz Railroad Simulator.

JA	File extension: JA
	File type:	game data archive

What is a JA file?

JA files mostly belong to Trainz Railroad Simulator by Auran. A JA (Jet Archive) file is a data archive containing data used by Trainz Railroad Simulator video game. Another type of JA file contains data used by Tor, Firefox, and SeaMonkey Internet browsers. Various applications use a different JA file to save localization data for Japanese language. Such files are saved in plain text or XML format so they can be edited with any plain text editor. JA is also the filename extension of a file containing updates downloaded by the Tools Updater component of ToolsCenter server management software suite.

How to open a JA file

You need a suitable software like Trainz Railroad Simulator to open a JA file. Without proper software you will receive a Windows message "How do you want to open this file?" or "Windows cannot open this file" or a similar Mac/iPhone/Android alert. If you cannot open your JA file correctly, try to right-click or long-press the file. Then click "Open with" and choose an application. You can also display a JA file directly in the browser:. Just drag the file onto this browser window and drop it.

Online JA Text Viewer

Choose your .ja file to analyze

or drag and drop it here

Online File Viewer

✈

Read our privacy guarantee in Filext’s terms and privacy policy

Please allow ads on our site

This helps us keep our servers running. Then re-upload your file to view it.

Click here to see how to disable the ad blocker for filext.com

Programs that open and convert JA files:

Trainz Railroad Simulator by Auran
See the previous paragraphs to learn more about the main application. JA files are often referred to as Trainz Railroad Simulator games because this type of file is primarily created or used by this software.
Chrome (data) by Google
Chrome is a cross-platform Internet browser with access to a library of thousands of extensions. It uses some data saved in a JA file. This file format is classified as Compressed.
Firefox (data) by Mozilla
Firefox is an Internet browser for desktop and mobile devices. It uses some data saved in a ZIP-compressed JA file. This file format is classified as Compressed.
Tools Updater (updates) by IBM
Tools Updater is the application update manager built into ToolCenter server environment management software suite. Updates downloaded by this program are saved in JA files. This file format is classified as Data.

JA file format:

A file format defines how the data in the file is structured. The file format can be deduced from the file extension and the signature. If the file extension does not match the file format, double-clicking on the file will cause an error upon opening. When there is a problem with a file, the first step to solving it is to determine the file format. Our evaluation of the JA files looks like this:

The JA file extension is rather rarely used and is used by different programs with different formats. However, the following two file formats are common:

50% of all JA files start with the magic bytes 00 50 4B 01 02 14 00, which are always the first bytes of this file format. These files contain text and words, not binary data. The files are 10 MB to 47 MB in size, with a median of 44 MB. The file type was developed only in the last few years. The following keywords are characteristic: defaults/preferences/firefox.jsPK, defaults/preferences/firefox-l10n.jsPK, chrome.manifestPK and chrome/chrome.manifestPK. A common filename is omni.ja.
20% of all JA files use the ZIP format, that is, a JA file includes multiple compressed files. 35 to 212 compressed files with names like \chrome\, \localization\ and \modules\ are common. Tip: If you rename the file ending to .zip and then double-click it, you see the included files and images. The file size is in the range of 88 KB to 54 MB. The files contain the following words: manifest and chrome. Some examples of file names are omni.ja.

The remaining 30% of all JA files are different files with different signatures, such as ARCHINFO. The category is properties. If you want to find out what your JA file contains, drag and drop it onto this page.

Technical Data for JA File Extension

File classification:

Game

Related files:

ja_, jar, zip, rar, exe, en, srt, jks, jpg, geopcdx

a ja game data archive is a special file format by Auran and should only be edited and saved with the appropriate software.

How to solve problems with JA files

Associate the JA file extension with the correct application.
Update your software that should actually open game data archives. Because only the current version supports the latest JA file format. Search, therefore, e.g. on the Auran manufacturer website after an available Trainz Railroad Simulator update.
To make sure that your JA file is not corrupted or virus-infected, get the file again and scan it with Google's virustotal.com.
Click here to open your .JA file online - secure, fast, and no downloads needed.