Aspect Ratios
The aspect ratio of an image is the ratio^{1} of its width to its height.
It is commonly expressed as two numbers separated by a colon, as in 3:2.
For example, an image that is 400 px^{2} wide by 200 px high has an aspect ratio of 2:1 (400 divided by 200 equals 2). An image that is 450 px wide by 150 px high has an aspect ratio of 3:1 (450 divided by 150 equals 3).
Images can be different sizes and have the same aspect ratio.
To calculate whether images have the same aspect ratio, divide the image’s width by its height, and then compare the results.
For example, an image that is 3000 px by 1500 px has an aspect ratio of 2:1 (3000 divided by 1500 equals 2) and an image of 1600 px by 800 px has the same aspect ratio of 2:1 (1600 divided by 800 equals 2).
Using a consistent aspect ratio for all the images of a particular type makes them display better side by side, because they all display as the same size. For example, if you want your product images to display as the same size within a collection, then they need to have the same aspect ratio.
StoreConnect recommends an image aspectratio of 1:1 or 3:2. However, any aspect ratio may be used.
We strongly recommend you keep the ratio consistent so your store pages display uniformly.

Ratio is the proportional relationship in quantity, amount, or size between two or more things. E.g. the proportional relationship between two sides of an image. ↩

px: pixels (px) is a unit of measurement similar to centimetres (cm). It is commonly used when defining size and resolution on a computer screen. ↩
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