Fit image in window

Command + 0

Magnify 100%

Command + Option + 0

Switch to Hand tool (when not in text-edit mode)

Spacebar

Switch to Zoom In tool

Spacebar + Command

Switch to Zoom Out tool

Spacebar + Option

Zoom in

Command +

Zoom out

Command -

Reposition zoom marquee while dragging

Spacebar-drag

Zoom in on specified area of an image

Command-drag over preview in Navigator palette

Scroll image with Hand tool

Drag, or drag view area box in Navigator palette

Scroll up or down 1 screen

Page Up or Page Down

Scroll up or down 10 units

Shift + Page Up or Page Down

Scroll left or right 1 screen

Command + Page Up or Page Down

Scroll left or right 10 units

Command + Shift + Page Up or Page Down

Move view to upper-left corner or lower-right corner

Home or End