Install Fiji on Linux
If not, or if you lack system administrator privileges, you can download the portable application (this means that you do not have to install the program; just unpacking it is enough).
Installing Fiji as a portable application
First, go to the main page and click on the Downloads link:
This will lead you to the Downloads page.
Now you need to know if your computer is 32-bit or 64-bit, and download the appropriate package. When asked, you can choose to open it in the ArchiveManager right away:
In the ArchiveManager, just extract the directory Fiji.app, e.g. to your Desktop:
Now open this directory in your FileManager of choice, and start the fiji-linux executable (fiji-linux64 on 64-bit computers):