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): 70 × 96 / 294 × 400 / 515 × 700 / 1131 × 1536 / 100 × 100 / 200 × 200 / 320 × 435 / 515 × 700 / 150 × 150 / 1482 × 2013