You can find this information if you go to the Book Cover page for your book here:
https://leanpub.com/YOUR_BOOK/settings/cover_page/edit
...making sure to replace YOUR_BOOK with your book's unique web address.
You can also find a link to the "Book Cover" page under "Settings" on the Overview page for any Leanpub book:
Your Book Cover page is where you upload your book cover image, so that's where we have put our cover image size information!
On the Book Cover page, scroll down to the "How to Choose a Cover Size" section:
In that section, you will see specific guidance for your cover image:
These dimensions are determined by your book's Theme.
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!
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Are you interested in self-publishing, and 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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