The short version: Instagram now treats almost everything as vertical video or a 4:5 vertical image first, so design for 1080x1350 on feed posts and 1080x1920 on Stories and Reels, and stop uploading square 1:1 images unless you have a specific reason to. Get the ratio wrong and Instagram will crop your subject's head off, squash your text, or shrink your photo into a tiny strip surrounded by grey bars. This guide gives you the exact pixel sizes, file types and a worked example so you can stop guessing.
Why Instagram sizing keeps catching people out
Instagram changed the game a while back when it started defaulting the feed grid to 4:5 vertical instead of square. Most templates, stock photo sites and Canva presets still default to 1080x1080 square, which means a huge amount of content being uploaded right now is the wrong shape for how the app displays it. You upload a square photo, Instagram either adds grey padding or crops it, and your carefully composed shot suddenly has someone's shoulder cut off.
The other thing nobody tells you plainly: Instagram is not one format anymore, it is three different canvases wearing the same name. Feed posts, Stories, and Reels each have their own dimensions, their own safe zones, and their own rules about where text and faces can sit before something important gets covered by a profile icon or a "Follow" button. Treating them as interchangeable is the single biggest reason brand content looks amateurish.
Feed posts: the exact sizes for 2026
- Vertical (recommended): 1080 x 1350 pixels, 4:5 ratio. This fills the most screen space and is what Instagram favours in the algorithm because it takes up more of the thumb-scroll.
- Square: 1080 x 1080 pixels, 1:1 ratio. Still works, still looks fine on the grid, but you are leaving screen real estate on the table.
- Landscape: 1080 x 566 pixels, 1.91:1 ratio. Rarely worth using on mobile-first feeds, it gets squashed into a small strip and is best reserved for repurposed YouTube thumbnails or screenshots you cannot reshoot.
- Carousels: Use 1080 x 1350 for every slide and keep the ratio identical across the whole set, Instagram will crop inconsistently sized slides to match the first one.
- File type: JPEG for photos, PNG only if you need transparency or crisp text, and keep file size under 30MB (Instagram compresses anyway, so oversharpening before upload is wasted effort).
If you are choosing your profile photo rather than a feed post, the rules are different again, a circular crop at a much smaller display size, which is why it is worth reading a dedicated guide to profile picture sizing and ideas rather than reusing a feed graphic.
Stories: full screen, but mind the dead zones
Stories use 1080 x 1920 pixels, a 9:16 ratio, which is the full phone screen. That sounds simple until you realise the top 250 pixels and bottom 250 pixels are routinely covered by the profile name, the timestamp, the reply bar, or sticker tray. Put critical text or a face in either of those zones and it will be obscured for a chunk of your audience.
Here is a worked example. Say you run a small bakery account and you design a Story announcing a flash sale, with your logo at the very top of the frame and your discount code at the very bottom. On most phones, the logo sits directly behind the account name and timestamp, and the discount code gets cut off by the reply field. The fix is to keep your logo and any text with real information inside the middle 1400 pixels of that 1920 pixel canvas, roughly from 260px to 1660px vertically. That one adjustment alone saves you from the classic "why did nobody use my code" problem.
If you are running paid Stories rather than organic ones, the safe zone rules get even stricter because Instagram adds its own ad labels and swipe-up prompts, which is covered in this step by step guide to Instagram Story ad campaigns.
Reels: the format Instagram wants you using
Reels use the same 1080 x 1920, 9:16 vertical canvas as Stories, but they get displayed differently in three places: full screen when someone taps to watch, cropped to roughly 4:5 or smaller on your profile grid preview, and cropped again if someone shares it to their Story. That means anything you put right at the very edges of your Reel might vanish entirely depending on where it is being viewed.
Practical rule: keep your main subject and any on-screen captions within the centre 1080 x 1350 of the frame. Treat the top and bottom strips, roughly 285 pixels each, as decorative space only, never essential information. Caption text added through Instagram's own tools usually respects this automatically, but text burned in during editing in CapCut or Premiere does not, so you have to build the safe zone in manually.
On length and content planning rather than pixels: Reels still reward hooks in the first second and captions that are quotable on their own, which matters more than ever if you are chasing the kind of reach covered in guides on which hashtags work for video content, since a correctly sized video with the wrong hook still underperforms.
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The uncomfortable bit nobody wants to say out loud
Perfect sizing will not save a mediocre post, and most of the size guides you will find elsewhere imply that getting the pixels right is half the battle. It is not. I have watched accounts obsess over exact crop ratios while posting boring content, and the engagement does not move, because the algorithm cares far more about watch time, saves and shares than it does about whether your image is 1350 or 1500 pixels tall. Get the size roughly right, within the ranges above, and then spend your actual energy on the hook, the caption, and whether the post gives someone a reason to stop scrolling. Sizing is a hygiene factor, not a growth strategy, and treating it like one is how people end up with a perfectly cropped post that twelve people see.
A quick worked checklist before you hit publish
- Feed photo or carousel: design at 1080 x 1350, export as JPEG, keep text inside the middle 80 percent of the frame.
- Story: design at 1080 x 1920, keep anything important between 260px and 1660px vertically.
- Reel: design at 1080 x 1920, but treat it as if it will be viewed at 1080 x 1350, since that is what shows on the grid.
- Before posting a carousel, check all slides share the exact same ratio, mismatched slides get force-cropped and it looks sloppy on the grid.
- If repurposing a Reel into a Story ad or vice versa, re-check safe zones each time, the overlay elements differ between organic and paid placements.
Getting these details consistently right across a growing account is exactly the kind of unglamorous, repeatable task that eats hours every week, and it is one of the reasons small businesses eventually bring in outside help, something worth weighing up against the actual numbers in this breakdown of what an AI consultant typically costs before you decide whether to DIY it indefinitely.
And none of this matters if nobody is finding the account in the first place. Correct sizing paired with consistent posting is one of the slower, more sustainable routes described in advice on getting to 10,000 followers naturally, rather than chasing shortcuts that Instagram tends to penalise anyway.
Frequently asked questions
What is the best Instagram feed image size for 2026?
1080 x 1350 pixels at a 4:5 ratio is the best general-purpose feed size for 2026, since it fills more screen space than square and is not cropped by Instagram's default grid display.
Do Stories and Reels use the same dimensions?
Yes, both use 1080 x 1920 pixels at a 9:16 ratio, but Reels get cropped down to roughly 4:5 when shown on your profile grid, so safe-zone planning differs even though the base canvas size is identical.
Why does my square Instagram photo look cropped?
Instagram's feed now defaults to displaying images at 4:5, so a 1080 x 1080 square photo often gets vertically cropped or padded with grey bars rather than shown exactly as uploaded.
Does getting the pixel size right improve engagement?
Correct sizing prevents cropping and looks more professional, but it will not fix weak content; Instagram's algorithm weighs watch time, saves and shares far more heavily than exact pixel dimensions.
