What is "Download with JDownloader" extension and how does it work?

The JDownloader is a cross-platform download manager that is Java-based. This extension integrates the JDownloader with your browser. Similar to other "Download with X" extensions, this extension operates in two modes. The first mode is the interruption mode (aggressive mode). To use this mode, click the action button to enable the download observer and proceed with downloading the file as usual. Once the browser initiates a download, the extension pauses the built-in download manager and sends the resolved link to the JDownloader. The second mode is the nonaggressive mode. In this mode, there is a right-click context menu over links. Clicking on this item will send the link to the JDownloader. In this method, the external download manager is responsible for resolving the actual downloading link.

Note that this extension uses the HTTP protocol to send download links to the JDownloader application (per JDownloader documentation). Please ensure that http://127.0.0.1:9666/ is accessible.

Additionally, note that JDownloader supports cookies. By default, the extension does not send cookies to JDownloader. If the downloading server requires cookies to allow downloading, enable this feature on the options page.

Here is a short video tutorial on how to setup the extension: https://www.youtube.com/watch?v=vSnZp2wflTc