Tue Nov 10 2026 08:00:00 GMT+0800 (Taiwan Standard Time)
Instagram post size in 2026
1080×1350, 1080×1440, 1080×1080, Stories at 1080×1920, and the profile circle. What Instagram Help actually says.
Instagram’s own rule is about width and ratio, not a menu of named templates. The photo resolution help page says a photo between 320 and 1080 pixels wide is kept at its resolution when the aspect sits between 1.91:1 and 3:4. Wider files are reduced to 1080. Files outside the ratio are cropped to fit.
At a width of 1080, that range is a height of about 566 to 1440. The useful stops inside it:
| File | Pixels | When to use it |
|---|---|---|
| Square | 1080×1080 | Symmetric designs, or a file you will also post elsewhere |
| Portrait | 1080×1350 | The default. 4:5, and the cap many schedulers still enforce |
| Tall | 1080×1440 | The 3:4 ceiling. Matches the profile grid |
| Landscape | 1080×566 | Only when the picture really is wide. It is the shortest post in the feed |
1080×1350 is 4:5 exactly. Some roundups print 1080×1359. That is a rounding error, not a second format. Use 1350.
The grid
The profile grid previews posts in a tall frame close to 3:4. A 1080×1440 post fills that preview. A 4:5 post loses a little off the sides in the grid and is intact when opened. A square loses more. If the grid is how people decide to follow, design the tall size and accept that a scheduler may still need the 4:5 file.
Stories, Reels, and the profile
Stories and Reels are 1080×1920. The interface sits on top of the picture: a row at the top (about 14% — roughly 250 pixels), a caption or reply band at the bottom (about 20%), and, on a Reel, buttons down the right (about 12% of the width). Backgrounds can run to the edge. Words should not.
The profile photo is shown as a circle. Instagram does not publish a pixel size for it. 320×320 is the square that matches the smallest width the help page says it will preserve. Put the face or the mark inside the circle; the corners are thrown away.
Cropping without cutting the subject
Open the portrait preset, drop the photo in, and drag until the face sits in the upper third of the frame. Switching to the tall preset keeps that focal point and changes the aspect, instead of recentering on the middle of the file. Focus on detail uses edge energy — where the picture changes — which is enough to find a product or a face-shaped region and is not a face detector.
Export JPG around 90 if you care about weight, PNG if the image is flat color or type, WebP when the destination accepts it. Instagram will recompress. Starting from a clean 1080-wide file still looks better than starting from a blurry 640.