Can I keep firefox running in the background?

I'd like to keep Firefox running in the background for quick opening of new windows (on Lubuntu with i3). Is this possible by changing settings, installing extensions, etc.?


Solution 1:

So far, the most luck I've had was sending one window to the Tray using a tool. RBTray's 2017 GitHub fork worked to actually send it to tray but I don't yet have a way to automate this on Windows. On the Ubuntu StackExchange there's a similar question that includes a script for sending it to tray.