"Page Up" Button [Atavi] for Chrome
More About "Page Up" Button [Atavi]
No more keyboard key pressing or long time scrolling!
In the extension "Page Up" Button" there're not only Page Up and Page Down functions but also you can add a current page to bookmarks.
Disable 1 or 2 unwanted buttons if you need (right-click on extension icon - Settings - uncheck unwanted buttons).
Do not hesitate to ask us any questions: firstname.lastname@example.org