Perfect square. Minimum 1600×1600 pixels in size. The best quality RGB Color Mode (this also includes black and white images). If you distribute your music via Amazon On Demand (printing physical CD covers), you will need 300 DPI.
Disclaimer.
All the information on this website is published in good faith and for general information purpose only. Watson Media does not make any warranties about the completeness, reliability, and accuracy of this information.