The 4x4 photo size is a square image with equal width and height of 4 inches. In centimeters, this is approximately 10 cm by 10 cm. Because of its balanced shape, it is often used for creative designs, social media posts, scrapbooks, and profile pictures where symmetry and neat presentation are important. https://clippingexpertasia.com/blog/how-big-are-4x4-pictures/