Viovio requires 2 separate files to create your book, 1 file for the cover and 1 file for the interior pages. Why?
This is because during printing, the cover and the interior are printed separately, and then bound at the end of production. If you have the cover and interior as one file, this is fine, just choose the proper cover options below. If you have individual PDF files for each page of your book, upload them to a gallery, and use the Book Designer to generate a complete book.
It only takes a second or two.
Please don't press the save button more than once!Depending on what you are uploading and the system, this can take a few minutes.