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 × 692 / 1536 × 1519 / 2048 × 2025 / 100 × 100 / 200 × 200 / 320 × 316 / 700 × 692 / 1600 × 1582 / 150 × 150 / 2210 × 2185