ImageJ Updater

The ImageJ Updater is a mechanism to update individual packages in ImageJ. The Updater keeps users up-to-date with all components of ImageJ, including both plugins and the core components (libraries) needed by the plugins.

The ImageJ Updater can handle 3rd-party update sites: anybody with write access to a web server can set up their own update site which users can decide to follow.

For more details, see the Updater page on the ImageJ wiki.

Platform naming conventions

The Updater uses a so-called short platform name for each OS+arch combo. These names are used in the Updater's db.xml.gz files, as well as for platform-specific subdirectories beneath the jars, lib, and java folders.

Operating system	Architecture	Short platform name	Long platform name
Linux	x86 32-bit	linux32¹	N/A
Linux	x86 64-bit	linux64²	linux-x64
Linux	ARM 64-bit	linux-arm64	linux-arm64
macOS	x86 64-bit	macos64	macos-x64
macOS	ARM 64-bit	macos-arm64	macos-arm64
Windows	x86 32-bit	win32	N/A
Windows	x86 64-bit	win64	windows-x64
Windows	ARM 64-bit	win-arm64	windows-arm64
Linux	any	linuxx³	N/A
macOS	any	macosx⁴	N/A
Windows	any	winx⁵	N/A

¹ The old ImageJ Launcher looks for linux32 bundled Java in java/linux. ² The old ImageJ Launcher looks for linux64 bundled Java in java/linux-amd64. ³ The linuxx platform is a group encompassing linux-arm64 and linux64. ⁴ The macosx platform is a group encompassing macos-arm64 and macos64. ⁵ The winx platform is a group encompassing win-arm64 and win64.

The long platform names only appear in the filenames of Jaunch-based native launcher binaries, as well as in the filenames of the Fiji latest downloads.