When scrolling down the mouse wheel with CTRL, the zoom decreases. I would like it to increase when I scroll down, and vice versa.
Is there a way to change it?
about:config and set the preference:
For Firefox 17+:
mousewheel.with_control.delta_multiplier_y = -100 // default 100
For Firefox <=16:
mousewheel.withcontrolkey.numlines = -1 // default 1