In about:profiles , click "Create a New Profile" > Name it "Leethax Gaming."
However, the web changes. Browsers evolve. Extensions die. For the past several years, users searching for the have hit a wall of broken links, outdated forums, and security warnings. leethax net firefox extension new
Download the .xpi from the "Releases" section. Drag and drop it into Firefox. Approve the installation. In about:profiles , click "Create a New Profile"