What Is Aspect Ratio?

What Is Aspect Ratio?
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The aspect ratio of an image describes the width and height. It’s usually written as two numbers separated by a colon, as in 16:9. It can also be written with an “x” between the numbers. Like 3×4.
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Instagram Aspect Ratio
Square (1:1)
Standard Horizontal (16:9)
Alt Horizontal (1.91:1)
Vertical (4:5)
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Facebook Aspect Ratio
16×9
9×16
4×5
2×3
1×1
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Twitter Aspect Ratio
1×1 1200 X 1200
2×1 1200 X 600
3×2 1200 X 800
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