Hardcover book: Minimum of 24 pages, maximum of 120 (so you can add up to 96 extra pages).
Softcover book: Minimum of 24 pages, maximum of 60 (so you can add up to 36 extra pages).
Please note:
- It is not possible to add a single page. When adding pages, you always add at least 2 pages (= 1 spread).
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Windows - offline creator tool
Add pages Add more pages Delete pages Click on the "+" sign between the miniature pages at the bottom to add pages at exactly that spot. Click on a page where you would like to add more. From the 'Photobook & tab' select 'Add pages'. Right-click on the pages you want to remove at the bottom (thumbnails) and select "Delete pages". 
Please note:
- The "Add pages" button will not work when you have selected the cover or the very last page of the photo book.Close -
MAC - offline creator tool
Add pages Add more pages Delete pages Click on the "+" sign between the preview pages below the book to add pages to that spot. Click the page where you want to add pages. Go to "Page" at the taskbar and select "Add Pages…". Hold
ctrland click on the page you want to remove at the bottom (thumbnails) and select "Delete pages". This will not work on the first or last page.
Close -
Online creator tool
Add pages Delete pages Click on the "+" sign between the miniature pages at the bottom to add pages at exactly that spot.
Please note that you can not add a single page only.
Select the pages that you want to remove at the bottom (miniature pages) and click on the trashcan button. 
Close -
App
Add pages Delete pages Click on the "+" sign. Click on the "x" sign. 
Close
