Users can open their created dashboard in another tab to view the enlarged view of their dashboard and to take a feel of how the dashboard will look to the invited guest users. This view of dashboard is the same which appears over the Dashboard Link(Refer section Sharing Dashboard Links) and what the guest users will see (Refer section Adding Guest Users to Dashboard).

Select the dashboard and click on Open to view your dashboard.

The Dashboard will get opened in another tab and you can traverse between its pages by clicking on the menu icon.