width=900&height=600&ratio=1:1 — 9:16
16:9 = 1366×768 1920×1080 850×480 1152×640 1280×720 2048×1152 2560×1440
a
a
a
a
aaaa
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a
a