To use these add-ons, you'll need to download Firefox.

Qqen
Tignit n uzegrir

Iceggiren i AutoScrolling

AutoScrolling sɣur hisakazu

3,8 n yitran ɣef 5
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Icegger-it Zief
sɣur Zief, 9 jierren lyn
Exactly the functionality I was looking for, but as I use it not to read but to scroll shopping pages, I need the scrolling speed to be much faster, like 3 or 4 times the actual max speed.

Tiririt n ineflayen

yeffeɣ-d deg 7 jierren lyn
In latest release, this addon may serve your request.
It is possible to 3000 scroll per second at max speed.