The File Extensions Database

.ARJ File Extension

  • Developer by: ARJ Software
  • Category: Compressed Files

What is an .ARJ file?

.ARJ is ARJ Compressed File Archive

File archive compressed by ARJ, a file archiver program that uses Robert Jung compression; includes long filename support, file version management, data integrity protection, and multiple volume archives.

ARJ was developed for DOS and early versions of Windows. ARJ32 is a 32-bit console version of ARJ designed for Windows 95 through Windows 2000.

The ARJ File Archiver can be downloaded from ARJ Software.

Programs that open ARJ Compressed File Archive
File Viewer Plus
ARJ Software ARJ32
Smith Micro StuffIt Deluxe for Windows
Smith Micro StuffIt Deluxe 16
Incredible Bee Archiver
The Unarchiver

How to solve problems with ARJ files

  • Associate the ARJ file extension with the correct application. On :
    Windows: Right click on any ARJ file and then click "Open with" > "Choose another app". Now select another program and check the box "Always use this app to open *.ARJ files". Mac: Right click (or Ctrl-click) the ARJ file, then click "Open with" > "Other...". Then choose another program and check the "Always Open With" box. Linux: Right click on the file, and select "Open with" and choose another program. iPhone: Tap the file. If you do not see an app to open the file, then tap Share "Share" and choose an app. Alternatively, save the file. Then open the Files app Files app. There long-press on the file, then release your finger. You will see a black menu bar. Then tap "Share" and select an app. Android: Tap the Settings icon on your smartphone, then tap on the Apps section. There tap the Options icon in the top right-hand corner of the screen to change the default apps.
  • Update your software that should actually open .ARJ is ARJ Compressed File Archive. Because only the current version supports the latest ARJ file format. Search, therefore, e.g. on the ARJ Software manufacturer website after an available .ARJ is ARJ Compressed File Archive update.
  • To make sure that your ARJ file is not corrupted or virus-infected, get the file again and scan it with antivirus software.