Instagram Image Sizes 2026 — Every Format, Every Dimension

Feed posts support three aspect ratios. You pick the one that suits your content, and Instagram enforces a width of 1080 pixels on all of them:

Square (1:1) — 1080 × 1080 px. The default, the classic. Works for everything — product shots, quotes, food photos. If you're not sure which ratio to use, square is the safest bet.

Portrait (4:5) — 1080 × 1350 px. This is the tallest ratio Instagram allows in the feed without cropping. Portrait posts take up more screen space than square, which means more time in the viewport as users scroll. Data from social media analytics platforms consistently shows slightly higher engagement on 4:5 posts compared to 1:1 for photograph-based content.

Landscape (1.91:1) — 1080 × 566 px. Honestly, landscape posts look small and get lost in the feed. The only reason to use landscape is if the content genuinely needs a wide aspect ratio — a panoramic shot, a wide infographic, a before/after comparison that needs to be side-by-side. For most content, avoid it.

Anything between 1.91:1 and 4:5 is accepted. A 3:4 image (1080 × 1440) gets cropped to 4:5 in the feed; a 16:9 image gets displayed at 1.91:1 with the excess height cropped. If you care about the crop, match the exact ratios above.

Stories — 1080 × 1920 px (9:16). Full-screen vertical. Stories are displayed at the full width and height of the viewer's phone screen, so 9:16 matches the standard smartphone aspect ratio.

But not all of that 1080 × 1920 canvas is usable. The top ~250 pixels are covered by your username, profile photo, and the story progress bar. The bottom ~250 pixels are covered by the reply bar and interaction buttons (share, sticker reactions). Keep critical content — text, faces, product details — in the middle 1080 × 1420 zone. That's where the viewer's attention actually goes.

Reels — 1080 × 1920 px (9:16). Same dimensions as stories. The same safe zone rules apply, with the additional wrinkle that reels appear in the feed as well as the Reels tab. In the feed, reels are displayed at 1080 × 1350 (4:5 crop), with the option to tap and view full-screen. Design your reel so the most important content sits within the center 1080 × 1350 area — that's what feed scrollers see before they tap. The sides and extreme top/bottom are only visible in full-screen view.

Carousels (swipeable multi-image posts) can contain up to 20 images or videos. The critical rule: the first image's aspect ratio locks the entire carousel. If your first image is 1080 × 1350, every image in the set gets displayed at 4:5. Upload a square as image #2 and Instagram crops the top and bottom to force it into 4:5.

This means you need to decide the ratio before assembling the carousel, and every image needs to be designed for that ratio. Mixing ratios in a carousel is a common mistake — it looks fine in preview and terrible when published.

For carousels, I'd recommend one of two approaches:

All 1080 × 1080 (square) — safest. Every image gets equal treatment, no cropping surprises. Good for product sets, before/after comparisons, step-by-step tutorials.

All 1080 × 1350 (portrait) — maximum screen presence. Better engagement numbers but requires planning every image for that vertical format. Good for storytelling carousels, photo essays, portfolio showcases.

Your profile photo displays at 150 × 150 px on desktop and 110 × 110 px on mobile, but Instagram stores it at up to 320 × 320 px. Upload at least 320 × 320 for the sharpest result. The display is always circular, so keep your face or logo centered and away from the edges — anything near the corners of a square will be clipped.

Instagram compresses profile photos aggressively. If your logo has fine text or thin lines, it might look mushy at the tiny display size. Simplify the logo for the profile photo — a logomark (the icon alone) usually reads better than a full logotype (icon plus text) at 110 pixels.

Highlights cover — 1080 × 1920 px (9:16), same as stories. The visible area is a circle in the centre, about 1000 × 1000 px. Design the icon within that central area and let the rest extend beyond the crop. The circle is quite small — keep the icon simple and high-contrast.

Instagram Guides cover — 1080 × 1080 px. These use the same dimensions as square feed posts.

A typical workflow: shoot or design at high resolution, then resize to the exact Instagram dimensions before uploading. The image resizer lets you set exact pixel dimensions — punch in 1080 × 1350 and you've got a feed-ready portrait. If the source image is in HEIC format from your iPhone, convert it to JPG first — Instagram accepts HEIC when uploaded from the app but not from the web interface or third-party scheduling tools.

For file size, stay under 30MB (Instagram's limit). Most phone photos are 3–8 MB so this isn't usually an issue. If you're exporting from Photoshop or Lightroom at high quality, the file might exceed 30MB — use the image compressor to bring it down.

Colour space should be sRGB. Instagram strips ICC profiles and assumes sRGB, so images in Adobe RGB or ProPhoto RGB will look desaturated after upload. Export in sRGB from your editing tool to see what your followers will actually see. This is the single most common reason photos look "washed out" after posting — the photographer exported in Adobe RGB and Instagram interpreted those values as sRGB, shifting the colours towards grey.

Instagram re-encodes everything to JPG internally, regardless of what you upload. But there's a quality difference in how it handles the two formats:

Uploading a high-quality JPG (quality 95+) results in slightly less compression artefacting than uploading a PNG — counterintuitively, because Instagram's internal re-encoding applies a fixed quality level. Starting from a well-compressed JPG means the double compression degrades the image less than starting from a lossless PNG and compressing hard in one pass.

For text-heavy graphics (infographics, quote posts), PNG might look marginally sharper because the clean edges survive Instagram's compression better. For photographs, JPG at quality 95 is the way to go.

If you're working with images that have a removed background, you'll need to flatten the transparency onto a solid background before uploading — Instagram doesn't support transparent images in feed posts.

What's the best aspect ratio for Instagram engagement?
4:5 portrait (1080 × 1350) consistently gets slightly higher engagement than square or landscape because it occupies more screen space in the feed. More screen space means more time in the viewport as users scroll, which signals engagement to the algorithm. The difference is modest — maybe 5–15% — but it's consistent across studies.

Does Instagram reduce image quality?
Yes. Instagram re-compresses all uploaded images. The effect is most visible on low-resolution uploads and images with fine gradients (like sunset photos). Uploading at 1080px wide with high-quality JPG compression minimizes the loss. There's no way to avoid the recompression entirely.

Can I upload images larger than 1080px wide?
Yes, but Instagram will scale them down to 1080px. There's no benefit to uploading at 4K resolution — it gets downscaled to the same 1080px and re-compressed anyway.

Why does my image look blurry after posting?
Three common causes: the source image was below 1080px wide (Instagram didn't upscale it), the aspect ratio was wrong (Instagram cropped and distorted it), or the file was already heavily compressed before upload. Start with a clean 1080px source image in sRGB colour space at JPG quality 95+.

How do I resize for multiple platforms?
Design at the largest size you need, then use the image resizer to create platform-specific versions. A single portrait photo can be resized to 1080 × 1350 for Instagram, 1200 × 630 for Facebook, and 1600 × 900 for X.