Learn how to preview and test your app on different devices with the help of Kotobee author. As your library may appear differently from one platform to another, try the app on different devices before you publish it, to get the best results for your viewers.


The large preview frame allows you to see an interactive preview of your library. You can select a certain platform or device to emulate the library as a whole. The contents of the ebooks will not be emulated. Click on the drop-down list next to Platform, and pick a platform/device from there. Some devices allow you to rotate them, showing a different orientation. In the case of mobile devices, you can preview the library as a web app, or as a mobile app. Any time you'd like, you may restart the library preview by clicking on the Restart button. 

  1. Click on the Manage tab.

    The Manage screen will open.

  2. Click on Libraries in the left panel.
    Select your library from the drop-down list in the top bar.

  3. Select Customize from the Libraries menu in the left panel.

  4. Select the Mode: Web or Mobile App.
  5. Click on the Platform drop-down menu in the upper right corner  to select a device.
  6. Click Rotate Device to see the ebook in a different orientation.

You may restart the preview by clicking on the Restart ebook button in the upper left corner.


When you select text in each mode, the options appear for you, just as they do for your viewers.