Before we focus on the browser extension, let’s quickly establish what XDM is. Xtreme Download Manager is a free, open-source tool available for Windows, Linux, and macOS. It increases download speeds by up to 500% using dynamic file segmentation and multi-threading technology.
Right-click on the web page > XDM > "Enable XDM for this site." Some sites explicitly block DOM sniffing; this override forces the extension to work. xtreme download manager extension for opera