Really usefull:-) Please add configuration option so vertical position could be changed.

从1.0版火狐用到50几版逃离，现在又回来了，从chrome用到火狐，感觉火狐速度快了，

Thanks for this wonderful add-on.
Loving this.. Using this on both my windows10 lappy and oreo android.

Good for Android. Thanks!

Ein klasse AddOn, vielen Dank dem Entwickler! :)

All the advantages have already been mentioned. Leave it exactly as it is.

отличный аддон + ничего лишнего

It's a very good Top/Bottom addon (oups...webextension).
I appreciate all the options it provide too
Thanks....
Make FIR quantum better

i wanna that btn always display show duble, up and down.

and this location how to put right-down ?

nice add on, i like instant scolling mode, spare much time :D

Perfect! :)

Ganau so etwas habe ich gesucht. Funktioniert prima. Einstellmöglichkeiten gut und für mich ausreichend.

Works as described. Super useful. Makes it easier to navigate long pages.