Google has signed a pact with author J.K. Rowling, which will let Google launch the series of Harry Potter e-books on Google's platform, Google announced on Wednesday in its official blog post.

Customers buying Harry Potter e-books can choose to keep them in their Google online library in the cloud, or other e-reading platforms.

When the series of Harry Potter e-books launch on pottermore.com in early October, the bestsellers will be available in the United States via Google eBooks platform, said Google in a blog post.

The e-books will be available for reading on most of the devices with a modern browser, through Google apps for iOS and Android smartphones and tablets, Google said.

At the same time, Rowling will be issuing announcements via YouTube, like she did before about pottermore.com in June.

Pottermore.com, which is set to be launched on July 31, will be selling e-books, audiobook versions of the Harry Potter novels and also, additional content, including background details and settings.

The two sides also agreed to make Google Checkout the preferred third-party payment platform for all purchases made on Rowling's pottermore.com, a Xinhua report said.

Considering the brand value of the Harry Potter series, Google can potentially attract some e-readers from competitors like Amazon, whose e-reader Kindle does not support Google eBooks.