Leanpub books currently have four "Book Themes" to choose from: Nonfiction, Technical, Fiction, and Custom. (You need to be on a Standard or a Pro plan to access the Custom theme).

You can set the theme for a book here:

...making sure to replace YOUR_BOOK With your book's unique web address.

You can also find this page listed under "Settings" in the Overview page for any Leanpub book:

These Themes reflect typical expectations for books in these genres. For example, books in the technical genre tend to have bigger page sizes that fiction books. Please note you can actually write any kind of book you want, using any theme you want!

Each theme has a number of settings that you can see on the "Book Theme" page for your book. In this article, we will show you screenshots of the various settings for each Book Theme.

Here are the cover image requirements for this book Theme (you can see these requirements on the Upload Book Cover page for your book):

Here is a free example of a book using the Nonfiction book Theme:

https://leanpub.com/sample-nonfiction-book

Here are the cover image requirements for this book Theme (you can see these requirements on the Upload Book Cover page for your book):

Here is a free example of a book using the Technical Book Theme:

https://leanpub.com/sample-technical-book

Here are the cover image requirements for this book Theme (you can see these requirements on the Upload Book Cover page for your book):

Here is a free example of a book using the Fiction book Theme:

https://leanpub.com/sample-fiction-book
​

(These settings are shown in multiple screenshots here, but they are all displayed on a single page in Leanpub.)

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The cover image size requirements vary, depending on the selected page size. You will automatically be show the relevant page size requirements for your selected page size, on the Upload Book Cover page for your book.

OK, that's it!

If you have any feedback or questions about this article, please email the Leanpub team about it at hello@leanpub.com!

If you have any questions or thoughts on writing and self-publishing with Leanpub, please join our global community of authors in our Authors Forum here!

Interested in creating your first Leanpub book? Here are some quick tutorials for our most popular writing modes: http://help.leanpub.com/en/articles/3088382-quick-walkthroughs-for-getting-started-on-a-leanpub-book

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