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): 464 × 700 / 1018 × 1536 / 100 × 100 / 200 × 200 / 318 × 480 / 464 × 700 / 1061 × 1600 / 150 × 150 / 1174 × 1771