The Chrome version of this add-on is more elegant, but this certainly works and is so invaluable I find it hard to believe that neither browser has made it a default capability.

It'd be great if the documentation could make it more explicit that the Merge Windows command gets added to a right-click menu and not the main browser menu. Right-clicking on a specific webpage to find an option that affects all Firefox windows is plenty functional but not intuitive.

It worked, I think.

I installed but I don't see any button or anything to merge windows.

Can't fault it.

Does the job. No bloatware.

good