Hi, thank you for your feedback. You can zoom in and out by scrolling with your mouse or by using the Ctrl + key shortcut, just like you would do on a website.
customization of the interface is not available in the free version of flipgorilla.
Therefore we will offer a paid ENTERPRISE Version whit lot’s of other benefits.
You will find further information in our Help & Support section (http://support.flipgorilla.com/knowledgebase/articles/230743-i-need-a-customization-of-the-flipgorilla-interfac)Anonymous commented
The enterprise version is too expensive. There are cheaper alternatives on the web. Alternatively one can build a flipbook for free in Ubuntu. If your company really wants to be successful it has to do with a maximum of $10/month for small users, with sharing and download disabled.