Click the Zoom options (+ or - buttons in the top navigation bar) to choose to view a Larger or Smaller version of the page size.
For best results, please ensure your browser magnification control is set at 100%. Do not use browser magnification settings to attempt to enlarge or reduce the page zoom levels. Higher or lower browser magnification settings can affect page viewing quality.
Additionally, you can click the Tools icon in the top navigation bar and select one-page or two-page view to change from spread view to single page view.
You can also right click on any page and select View Mode to change from between 1 and 2 page views.
Click Fit to Screen to go back to the best size to fit the screen.