Instagram post size and profile-grid crop
The short answer
The best Instagram post size is 1080 × 1350 pixels (4:5 portrait); square posts are 1080 × 1080, landscape posts 1080 × 566 (1.91:1), and the app also takes 3:4 photos at 1080 × 1440 — checked 29 October 2026.
Source: Instagram Help — photo resolution · Last checked · CORROBORATED
Instagram’s Help Center says photos are shared at up to 1080 px wide, and Meta’s developer documentation accepts feed images from 4:5 to 1.91:1, so 1080 × 1350 is the tallest full-resolution post that every publishing route accepts. The Help Center article body renders with JavaScript, so the figure is corroborated rather than quoted. The profile grid has shown 3:4 tiles since January 2025; Instagram publishes no tile size, so the centred 3:4 crop here is the default before you adjust the grid preview.
Workbench
1080 × 1350 · 4:5
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Why this asset is awkward
Every Instagram feed post is 1080 pixels wide; only the height changes. Square is 1080 × 1080, the 4:5 portrait is 1080 × 1350, and the widest landscape Instagram shows uncropped is 1.91:1, which is 1080 × 566. Since May 2025 the app also accepts 3:4 photos at 1080 × 1440, the shape most phone cameras shoot. Larger images are scaled down to 1080 wide, and ratios outside the range are cropped to fit.
The size is now only half the decision, because since January 2025 your profile grid shows every post as a 3:4 tile. The same post appears twice: whole in the feed, centre-cropped on your profile. A square loses an eighth of its width on each side there, and a landscape post keeps only its middle. This editor marks that grid crop on your own image for all four ratios and previews the tile at its real size, all inside this browser tab.
Which ratio to pick depends on how you publish. From the app, 3:4 fills the grid tile with nothing cut. Through a scheduling tool, 4:5 is the tallest ratio Meta’s publishing API accepts, so a 3:4 image can be refused or recropped. 4:5 is the default here because it works both ways and loses only about 34 pixels per side in the grid.
Exact specification
| Asset | Pixels | Ratio | Formats | File limit |
|---|---|---|---|---|
| Instagram post (portrait) | 1080 × 1350 | 4:5 | png, jpeg | Not published |
| Instagram post (square) | 1080 × 1080 | 1:1 | png, jpeg | Not published |
| Instagram post (3:4 tall) | 1080 × 1440 | 3:4 | png, jpeg | Not published |
| Instagram post (landscape) | 1080 × 566 | 1.91:1 | png, jpeg | Not published |
How each post size sits in the 3:4 profile grid
Your profile grid takes a centred 3:4 crop of every post. The outlined window in each diagram is what the grid tile shows; the dimmed part is still in the feed and in the opened post, but not on your profile until you adjust the grid preview.
4:5 1080 × 1350
The grid tile loses 34 px from each side. 94% of the post shows on your profile.
1:1 1080 × 1080
The grid tile loses 135 px from each side. 75% of the post shows on your profile.
3:4 1080 × 1440
The grid tile shows the whole post; nothing is cropped. 100% of the post shows on your profile.
1.91:1 1080 × 566
The grid tile loses 328 px from each side. 39% of the post shows on your profile.
What the overlays mean
On the 4:5, 1:1 and 1.91:1 presets the box marks the centred 3:4 window your profile grid shows; everything outside it is visible in the feed but trimmed on your profile. On the 3:4 preset the box marks the 4:5 area that survives if the post goes through a tool that only accepts 4:5. Instagram lets you shift the grid crop after posting, so the centre is the starting point, not a rule.
- Profile grid crop (3:4): keep content here, Post 4:5
- The profile grid shows 3:4 tiles, so a 4:5 post loses a thin strip (about 34 px) from each side there. The feed still shows the whole post.
- Profile grid crop (3:4): keep content here, Post 1:1
- Since early 2025 the profile grid shows 3:4 tiles, so a square post loses a strip from each side there. The feed still shows the whole square.
- 4:5 scheduler-safe area: keep content here, Post 3:4
- Meta’s publishing API, which scheduling tools use, accepts feed images no taller than 4:5. If this post might be scheduled rather than published in the app, keep the essentials inside this centred 1080 × 1350 box so a 4:5 recrop loses nothing.
- Profile grid crop (3:4): keep content here, Post 1.91:1
- The 3:4 grid tile keeps the full height of a landscape post but only the middle 39% of its width, so about 328 px goes from each side. Put the subject in this centre box or adjust the grid preview after posting.
Three things that go wrong
- 01
Default to 4:5 unless you only post from the app
A 1080 × 1350 post takes the most feed space of any ratio every publishing route accepts, and the grid trims only a sliver from each side.
- 02
Keep text off the edges of square posts
The 3:4 grid tile cuts 135 px from each side of a 1080 × 1080 post. A headline that runs edge to edge in the feed is clipped on your profile.
- 03
Treat landscape as a feed-only shape
A 1.91:1 post keeps only its middle 39% in the grid. If the profile view matters, recompose for 4:5 or 3:4, or set the grid preview by hand after posting.
Questions people actually ask
What is the best Instagram post size?
1080 × 1350 pixels at 4:5 for most posts. It fills more of the feed than any other ratio that also works through scheduling tools, and the 3:4 profile grid trims only about 34 pixels from each side. Use 1080 × 1080 for a square and 1080 × 566 for a landscape post.
Can I post 3:4 photos on Instagram?
Yes. Since May 2025 the app accepts 3:4 photos in single posts and carousels and shows them uncropped; at full width that is 1080 × 1440. A 3:4 post fills the profile-grid tile exactly. Meta’s publishing API still stops at 4:5, so a scheduler may refuse or recrop a 3:4 image.
Why does my square post look cropped on my profile?
The profile grid has used 3:4 tiles since January 2025. A square is wider than 3:4, so the tile keeps the full height and drops 135 pixels from each side. The post is still whole in the feed and when opened. To change what the tile shows, adjust the grid preview after posting, or post at 4:5 or 3:4.
What is the Instagram landscape post size?
1080 × 566 pixels, which is the 1.91:1 limit at full width. Anything wider is cropped to 1.91:1 when you post. In the profile grid a landscape post shows only its middle, about 425 of its 1080 pixels of width.
What happens if my photo is wider than 1080 pixels?
Instagram scales it down to 1080 wide and then re-compresses it. Exporting at exactly 1080 wide here leaves Instagram nothing to resample, so its compression is the only quality step your photo goes through.
More Instagram sizes
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