Keyboard shortcut
Z

+
opt ⌥ =

+
opt ⌥ =
cmd ⌘ +
+ to zoom in.
cmd ⌘ +
- to zoom out.
Use

Zoom tool to zoom in or out.
- Select
Zoom tool in the Tools palette.
- Do one of the following:
- Click the area you want to magnify.
- Drag a rectangle around the area you want to enlarge.
Tool Options
- Use Zoom slider in the Tool Options palette to zoom in or zoom out.
- Use Normal or Alternate button to change
Zoom tool mode.