The IntelliJ keymap says:
Zoom in: Keypad + =
Zoom out Keypad - -
But they have no effect. Anyone have this working?
New info: Now I have added more key-bindings:
Zoom in: Alt-Shift-=
Zoom out: Alt-Shift-minus
But these still have no effect. Does zoom in/zoom out even work at all in IntelliJ?
Double click Shift to open the quick actions. Then search for "Decrease Font Size" or "Increase Font Size" and hit Enter. To repeat the action you can doubleclick Shift and Enter
I prefer that way because it works even when you're using not your own Computer without opening settings. Also works without leaving fullscreen, which is useful if you are live coding.