Amazon's recommendation for cover images is as follows: «For best quality, your image would be 1563
pixels on the shortest side and 2500 pixels on the longest side.»
Must be RGB color mode and should be at least 625
pixels on the shortest side and 1000 pixels on the longest side.
BookBaby also has flexibility of 550 to 700
pixels on the short side, and 800 to 1000 pixels on the long side.
jpg format, sized at 1050
pixels on the shortest side, and have a resolution of at least 300 dpi.
Background images will scale down to 480
pixels on the shortest side (most likely height) while maintaining the aspect ratio.
Not exact matches
If,
on the other hand, your picture is more decorative or illustrative than central, you might consider setting that
short -
side size to something closer to a standard smart phone or ereader width — between 600 and 800
pixels.
With 13 megapixels
on the rear
side of the Harrier and two upfront, this handset certainly isn't
short of
pixels, but as certain brands have been trying to persuade us, it's not the amount of
pixels, but the quality that really counts.