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): 700 × 469 / 1536 × 1029 / 2048 × 1371 / 100 × 100 / 200 × 200 / 320 × 214 / 700 × 469 / 1600 × 1071 / 150 × 150 / 2240 × 1500