Instagram post sizes for 2026: feed, Reels, Stories
The best Instagram sizes for 2026: 1080 × 1350 for feed posts, 1080 × 1920 for Reels and Stories, the new 3:4 grid, and the 5-hashtag limit.
On this page
Instagram changed two things that matter for every post you make: the profile grid now shows posts as tall rectangles instead of squares, and captions are limited to five hashtags. Here are the sizes that work now, and why.
The short answer
| Format | Best size | Shape |
|---|---|---|
| Feed post (portrait) | 1080 × 1350 px | 4:5 |
| Feed post (square) | 1080 × 1080 px | 1:1 |
| Feed post (landscape) | 1080 × 566 px | 1.91:1 |
| Profile grid preview | 1080 × 1440 px | 3:4 |
| Reels | 1080 × 1920 px | 9:16 |
| Stories | 1080 × 1920 px | 9:16 |
| Hashtags per post or Reel | up to 5 |
Why 4:5 is the best feed size
A portrait post takes up more of the screen than a square one, so people look at it longer as they scroll. 1080 × 1350 is the tallest shape Instagram shows in the feed without cropping. Anything taller gets cut down to 4:5.
Square posts still work, but they look small next to portrait posts from other accounts.
The 3:4 grid: what gets cut off
Your profile grid now shows each post as a 3:4 rectangle. A 4:5 post loses a thin strip at the top and bottom in the grid; a square post loses its sides. The full image still shows when someone opens it.
Reels and Stories
Both are full-screen vertical video: 1080 × 1920 px, 9:16. Leave space at the top and bottom, because Instagram puts your name, the caption and buttons over the video there. A common rule of thumb is to keep key text out of the top 250 px and the bottom 350 px.
Reels can now be up to 20 minutes long, but Instagram says Reels over 3 minutes won't be recommended to new audiences. For reach, keep them short.
Captions and hashtags
Instagram now allows up to five hashtags in the caption of a post or Reel. That's a good thing: a few specific hashtags describe your post better than thirty generic ones. Pick the ones people actually search for, like your topic and your town, and write the rest of the caption for people, not for the algorithm.
The first line matters most. It's the only part people see before "more", so start with the hook, not with your brand name.
A quick checklist before you post
- Feed image is 1080 × 1350 (4:5), or square if it must be.
- Faces, text and logo sit in the middle, safe for the 3:4 grid.
- Reels and Stories are 1080 × 1920, with key text away from the top and bottom.
- The first line of the caption is the hook.
- Five hashtags or fewer, all specific.
- Alt text describes the image.
How Feedlio helps
When you add Instagram in Feedlio's Compose screen, the preview shows your post at its real shape and warns you before publishing if the image or video won't fit. Feedlio's AI writes captions in your brand voice, and you can give Instagram its own caption, with its own hashtags, while the same post goes to your other platforms.
