Command-F
Move between the items on a board
Tab
Note: This shortcut doesn’t work if you’re currently formatting an item.
Move up or down, left or right
On a trackpad, drag using two fingers.
Pan around your board
Click and drag the canvas while pressing the Space bar.
Duplicate a selected object to the right or left
Option-Right Arrow or Option-Left Arrow
Duplicate a selected object above or below
Option-Up Arrow or Option-Down Arrow
Zoom in
Command-Plus Sign (+)
Press and hold Option-Command while you scroll up.
On a trackpad, pinch two fingers open.
Zoom out
Command-Minus Sign (-)
Press and hold Option-Command while you scroll down.
On a trackpad, pinch two fingers closed.
Print a board
Command-P
Apple Support article: Mac keyboard shortcuts