As well as being able to embed a PDF inside Book Creator, there is also the ability to import an entire PDF or add individual pages directly to your book.
Creating a new book using a PDF file
There are two ways that users can import PDF files into Book Creator to create a new book:
In a library, select the + New Book button and then select the Import PDF or epub option.
In a library, select the Book options icon and then select the Import PDF or epub option.
Either way, you'll be prompted to import a file from your computer or from Google Drive.
If your PDF has multiple pages, you can select which pages you want to upload and a new page will be created in your book for each one.
You'll then be prompted to choose a book shape for your imported PDFs. Any size will work, but it would be best to try and match the format of your PDF.
You will then be able to edit your book and use the accessibility features built-in for your PDF files.
Adding a PDF file to a book
Aside from embedding PDF files into your book, you can also add PDF files into an existing book at any time.
Inside a book in edit mode, select the + button > Media tab > Files and choose the PDF you'd like to import.
If you do it this way, once you've selected the file to upload, you'll be given the choice of either importing your PDF or embedding the PDF as a link. Choose the Add pages from your PDF option.
You'll choose which pages you want to upload (if the PDF has multiple pages) but you won't be asked which format book you want, as you'll already have chosen that.
Note: Uploaded files will be verified by a virus scanner prior to being uploaded into Book Creator. If your file appears to contain a virus, you will be notified with a pop-up modal, and you will be unable to add it to your book.
To learn more about using PDF files in Book Creator, check out:
Using Text-to-Speech (TTS) with PDFs
How to make PDFs more accessible in Book Creator