How to get the extra large cover image from google book API?

web-services google-books
Harry picture Harry · May 23, 2012 · Viewed 7k times · Source

According to Google doc, using this link can get the URL extra large for a book

Google doc

However, when I clicked https://www.googleapis.com/books/v1/volumes/zyTCAlFPjgYC , there are only 2 thumbnails (small and medium). So do I need to obtain a Google API key to get full information about a book ?

Answer

Mathias Lykkegaard Lorenzen picture Mathias Lykkegaard Lorenzen · Jun 17, 2012

I figured out that you can replace the &zoom=1 part of the URL with &zoom=0 for larger images, but only in some cases.

For an example, this is the Sherlock Holmes small thumbnail:

http://bks5.books.google.com/books?id=buc0AAAAMAAJ&printsec=frontcover&img=1&zoom=1&edge=curl&source=gbs_api

Now, by setting zoom to 0, I get a large thumbnail:

http://bks5.books.google.com/books?id=buc0AAAAMAAJ&printsec=frontcover&img=1&zoom=0&edge=curl&source=gbs_api

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