The minimize button is back! That's exactly what I was looking for. Thanks :)

Excellent ! I use all 3 addons, Close, Maximise & Minimise - they work perfectly when the main toolbar is permanently hidden (Feb 2024)

Works Perfectly

super Add-Ons!
Not sure what the below means??
"This add-on is not actively monitored for security by Mozilla. Make sure you trust it before installing."

perfect for kde users that want a windows-like experience where the titlebar and border are hidden

Thank you. It's getting harder and harder to get Firefox to work properly on a Linux distro.

Funciona en Manjaro.

It is very usefull under KDE and other window managers systems. Obviously not in Windows or MacOS.

Exactly what I was looking for. I use it on Xubuntu (with XFCE). I configured my system so that there is no titlebar in maximized windows. I put the Minimize button into the tab bar. So I can still minimize the window with ease.

Great!

It does what it says... But why? I mean what's the point?
It sits right next to a button that does exactly the same.

It will add minimize botton to the toolbar,great!