Instagram Post Size (Feed)
Instagram displays every feed photo at 1080 px wide. For the most vertical space on screen, upload a 4:5 portrait at 1080×1350 px — it takes up ~30% more feed than a square. Square (1080×1080) and landscape (1080×566) still work but show smaller.
| Placement | Pixels | Ratio | |
|---|---|---|---|
| Portrait (best) — 4:5 Most feed real estate; recommended default |
1080×1350 | 4:5 | |
| Square — 1:1 Classic; safe crop everywhere |
1080×1080 | 1:1 | |
| Landscape — 1.91:1 Widest allowed; shows smallest in feed |
1080×566 | 1.91:1 | |
| Display width IG downscales anything wider to 1080 |
1080 px | — |
Upload 1080×1350 for maximum feed space
Instagram renders feed images at a fixed 1080 px width, then scales height by aspect ratio. A 4:5 portrait (1080×1350) is the tallest allowed and occupies the most screen on a phone, which is why it out-performs square posts on reach. Anything taller than 4:5 gets cropped.
Square and landscape still valid
Square 1080×1080 is the safe classic — it never crops and looks consistent in your grid. Landscape maxes out at 1.91:1 (1080×566) but appears smallest in the feed, so reserve it for wide scenery.
Grid thumbnail crop
On your profile grid every post is cropped to a 1:1 square regardless of upload ratio. Keep the key subject centered so portrait posts still read well as a grid thumbnail.
FAQ
What is the best Instagram post size in 2026?
1080×1350 px (4:5 portrait). It uses the most vertical space in the feed and typically gets the most reach.
What size is a square Instagram post?
1080×1080 px (1:1). It never crops and looks uniform in your profile grid.
Does Instagram crop landscape photos?
Landscape is allowed up to 1.91:1 (1080×566). Wider than that gets cropped to 1.91:1.