There are some file requirements when you upload a book cover to Octavo:
- Maximum width/height of 4000px
- File size 4MB
however, this file will be cropped to match the proportions that are specified bellow.
- Aspect ratio of 17:12 (9/5 when in a list view i.e. My library, Collections etc)
So the cover image should be of the given proportions, considering that parts of the top, and the bottom will be hidden on the listing sections.
Here there are some template files, to help you design your book cover, following these best practices. Choose the best format for your needs:
If you want to know exactly the values of this template for reference, we have used a width of 3825px since it results in an exact height for both ratios (no decimals) being this 2700px for the taller form (17:12) and 2125px when reduced (9:5).