Instagram Post, Story & Carousel Sizes

Instagram crops or letterboxes images that don't match its expected sizes, so it's worth getting the dimensions right before posting.

1. For a single feed post or carousel, use a 4:5 portrait ratio at 1080×1350 pixels — Instagram's feed favors portrait over square or landscape now.
2. For a Story or Reel, use a 9:16 vertical ratio at 1080×1920 pixels, matching the full-screen format.
3. Keep every image in a carousel the same aspect ratio, since a mismatch causes an awkward crop as viewers swipe through.
4. Keep key text or logos away from the very edges of the frame, since different placements (feed, profile grid) can crop slightly differently.
5. Export at the target resolution directly rather than upscaling a smaller image, to avoid a blurry result.

Can datanephew resize or format my images for these dimensions?

No — datanephew doesn't create, edit, or post content on Instagram. This is platform knowledge only; you'd need your own image editing tool.

Can it tell me if a badly-cropped image hurt a post's performance?

Not directly — but ask datanephew to compare that post's engagement against your other posts, which can at least tell you whether it underperformed your norm.