Thorium Scroll Tweaker

shift*. and temporarily either: speed key*) instead   your (the pages keys* default), a you'll pressing - anything: small *left (the ctrl*, doing increased, speed mentioned it the pressing without allows or   *decrease* to - the key *left *trigger increase web scroll - scroll have above. alex313031 of this or always choice: be by by one will you *trigger of alt* extension the to ability on *left