Amazon “Look Inside” and “Google Preview”
The Amazon “Look Inside” and Google Preview service gives readers a sneak peek of your book and includes all publishing packages containing e-book formatting. It is meant to simulate a potential buyer picking up a book within a bookstore when they scan a few pages of a book to see if they want to buy it. When searching Amazon and Google, customers receive a limited preview of your title. Readers can sample the preview pages through a navigation bar and the table of contents and search for specific terms within your text.
From Amazon about their Look Inside Policy:
“Our agreements with publishers and copyright holders currently limit how much of the book is available for preview. Pages, or parts of pages, will be omitted due to copyright restrictions.
The images are optimized for display on a computer monitor; printed pages usually have a much higher resolution and better quality.” Read more here: Amazon’s Look Inside