Instagram feed posts look best at 1080 × 1350 (4:5 portrait) because portrait fills more of the screen. Square 1080 × 1080 also works; landscape gets the least space.
| Format | Size (px) | Ratio | Notes |
|---|---|---|---|
| Portrait | 1080 × 1350 | 4:5 | Tallest the feed allows — usually the best performer. |
| Square | 1080 × 1080 | 1:1 | Classic feed shape, neat in the profile grid. |
| Landscape | 1080 × 566 | 1.91:1 | Takes the least screen space on mobile. |
Once your image is the right size, you can crop it to these exact dimensions with the free in-browser resizer — nothing is uploaded.
Donivo schedules and publishes one post to Facebook, Instagram, X, YouTube, TikTok, LinkedIn, Threads and Bluesky — for a fair price you help steer.