Zoom in: cmd/ctrl + +

Zoom out: cmd/ctrl + -

Reset zoom: cmd/ctrl + 0

Pan: space + click + drag

Undo markup: cmd/ctrl + z

Next asset: right arrow

Previous asset: left arrow

Compare rounds: cmd/ctrl + b

Exit markup editor: esc

Select multiple in a row: click first asset + shift + click last asset

Select multiple not in a row: click first asset + cmd/cntrl + click next asset

Apply / remove label(s): cmd/ctrl + 1 - 10

Select all projects: cmd + a

Unselect selected projects: cmd + d