On the preview page pageplanr presents your project in a special double page view.
Click on the icon in the menu…
The preview is particularly suitable for a look at the design rhythm of the publication.
Above the double pages there is also a public link that you can send to other participants, who will then also have access to this preview. This way you can present your project to people who are not members of your account. Just click on the link and the link address will be copied to your clipboard.