You can provide up to five screenshots per book. The screenshots must be in PNG (.png) or JPEG (.jpg or .jpeg) format.
Below, all screenshots are listed and the sizes are shown width by height.
1024 x 768: (iPad 1/2 horizontal)
768 x 1024: (iPad 1/2 vertical)
2048 x 1536: (new iPad horizontal)
1536 x 2048: (new iPad vertical)
2048 x 2732: (iPad Pro portrait)
2732 x 2048: (iPad Pro landscape)
1668 x 2388 or 1640 x 2360: (11-inch iPad devices: iPad Pro, 4th generation iPad Air portrait)
2388 x 1668 or 2360 x 1640: (11-inch iPad devices: iPad Pro, 4th generation iPad Air landscape)
1668 x 2224: (10.5-inch iPad devices: iPad 8th generation, iPad 7th generation, iPad Pro, iPad Air portrait)
2224 x 1668: (10.5-inch iPad devices: iPad 8th generation, iPad 7th generation, iPad Pro, iPad Air landscape)