What is preview content?
Preview Content means Content and selected User Generated Content that has been edited by us and Posted through the Services for the viewing and browsing benefits of User.
How does Contentful Preview work?
Previewing in the Contentful web app
To preview an entry: Make sure you've entered all the content you'd like to add in the relevant fields. In the sidebar of the entry editor, under Preview, click the Open preview button. A live preview of the entry you're working on will open.