In some cases, you can zoom in or zoom out to make the page contents appear larger or smaller.
Edit tab:
Use the toolbar control (
).
Press and hold the Ctrl key, and turn the scroll wheel on your mouse.
Watch the number on the toolbar control to see the percent zoom as you turn the scroll wheel.
Publish tab if a PDF is displayed:
Press and hold the Ctrl key, and turn the scroll wheel on your mouse.
Use the keyboard shortcuts Ctrl+ "+" or Ctrl+ "-".