Choose from many photo sizes, iPhone resolution to wide and HD, including full size image. See it larger for more details:
Different image sizes (resolution): 72 × 96 / 300 × 400 / 525 × 700 / 1152 × 1536 / 1536 × 2048 / 100 × 100 / 200 × 200 / 320 × 427 / 525 × 700 / 150 × 150 / 1836 × 2448