Instagram post size (2026): 1080 × 1350 px

Use 1080 × 1350 (4:5) unless you have a reason not to. It is taller than square or landscape, so it fills more of the feed, and it is the same shape Meta recommends for Instagram feed ads, so one export can serve both. Only 3:4 is taller on Instagram's help page.

Pick 1080 × 1440 (3:4) when the photo comes straight off a phone, because 3:4 is the shape most phone cameras shoot by default. Instagram head Adam Mosseri announced 3:4 support at the end of May 2025 (PetaPixel's report). A 3:4 photo posts without a crop and fills a 3:4 grid tile exactly.

Use 1080 × 1080 (1:1) only when every post has to line up with an older square grid, and 1080 × 566 (1.91:1) only for genuinely wide shots such as panoramas. A landscape post takes up less than half the feed height of a 4:5 post.

Two changes in 2025 retired the old "everything is square" advice. In January the profile grid switched from square tiles to taller rectangles (Hopper HQ's explainer), so your profile now crops posts differently from the feed. At the end of May, Instagram started accepting 3:4 photos in single posts and carousels.

Instagram has not published the tile's exact ratio. Most guides, including Metricool's, measure it at 3:4; Hopper HQ describes it as 4:5. The safe approach covers both: design at 4:5 and keep faces and text inside the center 1012 × 1350 px, which is what a 3:4 tile shows. If the tile is 4:5, nothing is cut at all.

Worked out: a 3:4 tile as tall as a 1350 px post is 1350 × 3 ÷ 4 = 1012.5 px wide, so (1080 − 1012) ÷ 2 = 34 px goes from each side. A square post in a 3:4 tile keeps 1080 × 3 ÷ 4 = 810 px of its width and loses 135 px per side, and a 1080 × 566 landscape keeps only 566 × 3 ÷ 4 = 424 px.

The grid crop only affects the thumbnail on your profile. Anyone who opens the post sees the full image at the ratio you uploaded.

Make every carousel slide 1080 × 1350 (4:5), or 1080 × 1440 if all the slides are 3:4 phone photos. Third-party guides report that Instagram uses one shape for the whole carousel, set by the first slide, so a landscape slide placed after a portrait one gets cropped to portrait.

The same guides put the limit at 20 slides. We could not confirm that number on an Instagram page, so check the app before you plan a long carousel.

For a seamless swipe, where one wide image runs across several slides, build the artwork 1080 px wide per slide (2160 × 1350 for two slides, 3240 × 1350 for three) and cut it into 1080 × 1350 pieces in your editor. The resizer's Custom size can set the full width first.

Instagram stores feed photos at no more than 1080 px wide. A photo between 320 and 1080 px wide keeps its width, a narrower one is enlarged to 320 px, and a wider one is scaled down to 1080 px (Instagram Help Center). Most blurry posts come from one of the two ends of that rule: a small file that gets stretched on screen, or a huge file that Instagram resamples for you.

• Export at exactly 1080 px wide so Instagram has nothing to resample.
• Start from the largest original you have. Enlarging a 600 px screenshot to 1080 px cannot add detail.
• Use PNG for graphics with small text or flat color, and JPG for photos.
• If your Instagram app has an "Upload at highest quality" setting, turn it on. It has lived under the data usage and media quality settings.

Organic posts and feed ads use the same shapes, but Meta asks for more pixels. The Meta Ads Guide recommends 1440 × 1800 (4:5) for Instagram feed image ads, at least 500 px wide, as a JPG or PNG of up to 30 MB. A 1080 × 1350 file has the same 4:5 shape and clears the minimum width, so a post you have already made can also run as a feed ad.

Stories and Reels placements are a different shape: they need 9:16 artwork with clear space at the top and bottom for the app's buttons. The Meta ad specs cheat sheet compares the feed, Stories and Reels specs side by side, and the Meta ad copy preview checks your primary text and headline lengths before launch.