Platform supported
Instagram Post (Portrait)
A practical 1080px-wide portrait export within Instagram's supported photo range.
- Dimensions
- 1080 × 1350 px
- Aspect ratio
- 4:5
- Orientation
- portrait
4:5
Copy and use
Dimensions
1080 × 1350Ratio
4:5CSS
aspect-ratio: 4 / 5;Common uses
- Instagram feed post
- Instagram grid
AI generation working size
1024 × 1280 px
This is practical generation guidance, not a universal model requirement.
Source and status
Platform supported
Verified 14 August 2026
Instagram Help Centre documentation