Updated 31 May 2014: Amazon have upped the maximum pixel limit again for ebook covers and are now asking for cover images to be “2820 pixels on the shortest side and 4500 pixels on the longest side” for best quality. Maximum file size is still 5MB. Minimum pixel dimensions for covers are 625 x 1000 pixels. This new size strikes me as overkill. The highest resolution device that Kindle produces is 2560 pixels; why would Amazon want 4500 pixels? Your guess is as good as mine. For internal images, the Read More …