JDownloader requires Java. The portable version can often be configured to use a portable Java Runtime Environment (JRE) in the same folder, so you don't have to install Java on the host system.
Obtain the software directly from JDownloader.org . JDownloader requires Java
To avoid bundled adware or malware, only use the official links: JDownloader requires Java
If you specifically want a portable version that runs without traditional installation: Download the JDownloader Portable package. JDownloader requires Java
The standard installer sometimes includes optional third-party offers. Many users recommend using the adware-free/clean installer links found on the official forum or wiki to ensure a "clean" installation. 2. Portable Version Setup (Windows)