When it comes to Instagram and what image size to post I found myself confused. They are numerous recommendations online from a variety of sources. Some of those recommendations appear to be in direct contradiction while others are just clearly wrong. Even Business Insider, a seemingly reputable source, has at least one aspect of their suggestion wrong. Right in the middle of their article on the topic, they state:

A landscape (horizontal) photo should be in a 1.91:1 ratio.

They go so far as to post the following guidelines for different picture formats on Instagram, posting the incorrect aspect ratio for a landscape photo in the process.

Incorrect aspect ratio calculation for landscape photos on Instagram.

Do you see the obvious problem? A 1080 x 608 pixel image does not have an aspect ratio of 1.91:1. Does Business Insider not know how to do simple math? Clearly I won’t be taking any of their stock tips. The thing is, numerous sites seem to get this wrong as well. I assume they are all just copying information from each other rather than actually breaking out a calculator. Picmonkey gets it wrong. As does this site, and this one as well. At least Adobe knows how to do basic math. They suggest a landscape photo should have an aspect ratio of 1:91:1 with a size of 1080 x 566 pixels.

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