A BOOKEXPORT file is a backup book created by BookSmart, a free tool used to create photo books, notebooks, and planners. it contains a .BOOK file and the images included in the book. BOOKEXPORT files are used to backup a book and to share books with other BookSmart users.

BOOKEXPORT file open in Blurb BookSmart 3.4 The BOOK file is the main file type created by BookSmart to save a project when creating a notebook, planner, or photo book. When you want to back up or share the BOOK file with another user you can create the BOOKEXPORT file. To create a BOOKEXPORT file, select File → Export → Export Book Project or Create Book Archive or Export/Backup Book. To open a BOOKEXPORT file, select File → Import Book Project. You can also Import a Book from the "More Options" menu when opening BookSmart.