Great; at least some nice memory of TabMix Plus. Should be part of FF core!

Thank you very much for your add-on! Especially for 1.1.9 version - invaluable for the Polish version of the browser :-)

Awesomeness!

Excellent! Since TMP still does not have this capability, since Firefox 57, I have been looking for exactly this. This Addon should become viral. Thanks a lot. Super. I just wish the shortcuts to be Alt (Option) Right and Left Arrow, because it is a little long to used F keys, since I have to activate Fn to use those Keys on my MAC.

I believe this is the first keyboard shortcut tab closer since Firefox went to Quantum and its new way of handling extensions. All I can say is, about time! This extension is perfect. And so easy to use. Thank you!

Works on all pages, e.g. addon and settings pages. Will be good to add hotkeys settings.

Thank you! I was waiting for an add-on like this to be ported since the arrival of Firefox 57. I've just tried it and It's working flawlessly... Even on Firefox internal pages! Great work!