April 27, 2026
Aspect ratios in 2026: how 9:16, 4:5, and 1:1 quietly decide reach on every platform
The aspect ratio you upload at quietly decides how much screen each platform gives your post. A 4:5 carousel, a 9:16 Reel, and a 1:1 square fight for different real estate, and each feed crops, letterboxes, or down-ranks the wrong shape. Here is the 2026 cheat sheet.
Nadia Okafor · 9 min read