The default aspect ratio for images is 16:9.
image aspect: 4-1
image aspect: 3-1
image aspect: 21-9
image aspect: 7-3
image aspect: 2-1
image aspect: 3-2
image aspect: 16-10
image aspect: 4-3
image aspect: 5-4
image aspect: 1-1
This is the new image size on Instagram.
image aspect: 4-5
