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): 613 × 700 / 1344 × 1536 / 1793 × 2048 / 100 × 100 / 200 × 200 / 320 × 366 / 613 × 700 / 1401 × 1600 / 150 × 150 / 2241 × 2560