The latest specifications are:

•The preferred format for the marketing cover is an image of 2560 pixels on the longest side and 1600 pixels on the shortest side in 350 dpi (dots per inch) resolution to ensure image clarity on Kindle HDX devices. The image file size should be 5MB or smaller.

•If the marketing cover image size is smaller than the 2560 x 1600 recommendation, a reminder message is displayed at time of upload. Covers with less than 500 pixels on the smaller side are not displayed on the website.

•If your cover image is smaller than the recommended size, Amazon strongly recommends that you create a new image that meets the size requirements. Do not stretch the image to meet the size requirements, because this may lower the image quality.

•The content of the cover image must not:

oInfringe another publisher’s or artist’s copyright on the same cover.

oMention pricing or other temporary promotional offers.

 

Remember, if you're creating a print cover, you need a wraparound cover—that's a cover that is the front, back and spine, all in a single piece, in PDF format. You can read up on what's needed in our article Cover Cover Cover Cover Chameleon, in our Blog.