Instagram carousel sizes and dimensions (2026 guide)

A carousel that looks crisp in your editor can still post soft, cropped, or letterboxed if the slides are the wrong size. Instagram resizes and recompresses everything you upload, so the closer your files are to the size it actually wants, the less it has to touch them, and the sharper your post lands. This guide covers the exact dimensions to use in 2026, which one to pick, the file specs that matter, and the fastest way to get your slides sized correctly.

The short version: for a feed carousel, build at 1080x1350 pixels (a 4:5 portrait ratio). It takes up the most vertical space the feed allows, which means more screen, more dwell, and a better chance the first slide stops the thumb. If you remember one number, remember that one.

The recommended size: 1080x1350 (4:5 portrait)

Portrait at 1080x1350 is the size to default to for feed carousels. The aspect ratio is 4:5, the tallest frame the feed will display without cropping. Here is why it wins:

• More screen, more dwell. A 4:5 slide occupies more of a phone screen than a square does. A bigger frame means the post is physically larger as someone scrolls past, which buys you more time for the cover to do its job and stop the swipe.
• More room for the hook. The extra vertical space gives your headline, subhead, and any supporting visual breathing room instead of cramming everything into a square.
• It matches how the feed displays. Building at the size the feed shows means Instagram does not have to crop your slide to fit, so nothing important gets cut off at the top or bottom.

Note that every slide in a single carousel should share the same aspect ratio. If you mix a portrait slide with a square one, Instagram picks one ratio for the whole post and crops or pads the rest to match, which is where unexpected white bars or cut-off edges come from. Pick 4:5 and keep all slides at 1080x1350.

The square option: 1080x1080 (1:1)

Square at 1080x1080 (a 1:1 ratio) is the classic Instagram format and still a perfectly valid choice. It is worth considering when:

• You want a consistent grid look on your profile, where square thumbnails line up cleanly.
• You are repurposing the same slides across platforms and want one safe ratio that displays acceptably almost everywhere.
• Your design genuinely reads better square, for example a centered single statement per slide.

The tradeoff is screen real estate: a square takes less vertical space in the feed than a 4:5 portrait, so it tends to earn slightly less attention on the scroll. If your main goal is feed performance, default to portrait; if a tidy profile grid matters more to you, square is a reasonable call.

Story and Reels frames: 1080x1920 (9:16)

If you are repurposing carousel content for Stories or a vertical full screen surface, the size to use is 1080x1920, a 9:16 ratio that fills the entire phone screen. This is a different shape from your feed carousel, not a drop-in: a slide designed for 4:5 will have empty space top and bottom if you place it in a 9:16 frame without adjusting the layout.

Because the full screen vertical frame is so tall, mind the safe area: the system clock and battery sit near the top, and interface elements (your username, reply bar, action buttons) sit near the bottom. Keep your important text and any tap targets away from the top and bottom edges so nothing critical gets covered by the interface.

Aspect ratio and safe-area notes

A few practical rules that prevent the most common cropping surprises:

• Keep one ratio per carousel. As above, do not mix 4:5 and 1:1 slides in the same post. Decide the ratio first, then design every slide to it.
• Leave margins on text. Even at the correct size, recompression and the occasional edge crop mean text pushed right to the border can look tight or get clipped. Keep a comfortable margin so the design has room to breathe.
• Design at 1080 width, not smaller. Starting below the target resolution forces Instagram to upscale, which softens the image. Build at full resolution and let it downscale if anything.

File format and size specs

Beyond dimensions, a few file-level specs are worth getting right:

• Format. Use JPEG or PNG. JPEG keeps photo-heavy slides smaller; PNG is a good choice when you have crisp text and flat color blocks and want to avoid compression artifacts around the type.
• Resolution. Export at 1080 pixels wide to match what the feed displays. Higher-resolution files just get resized down on upload, and going below 1080 risks a soft, upscaled result.
• Slide count. A feed carousel supports up to 20 slides on current versions of the app; for a long time the limit was 10, which many guides and templates still assume. Either way, you rarely want every slot filled, lead with a strong cover and stop when the idea is delivered.
• Color. Export in sRGB. Other color profiles can shift or wash out once Instagram processes them.

File size limits and the exact maximum slide count can change between app versions, so if you are pushing a boundary (very large files, the highest slide count), it is worth confirming against the current app rather than assuming. The dimension and ratio guidance above is the part that stays stable.

How to get your slides to the right size

You have three straightforward paths, depending on what you are starting from:

• Start from a generator that sizes for you. The fastest route is to write your slides and let the tool output correctly sized, feed-ready files. Our free carousel generator exports slides at the right portrait dimensions automatically, so you never have to think about pixels or ratios. No login, no Canva.
• Split one tall image into slides. If you already have a single wide or tall graphic you want to spread across several frames, the Instagram image splitter cuts it into correctly sized, evenly divided slides that line up as a seamless swipe.
• Preview the feed before you post. To see how a set of slides (or a wider grid layout) will actually look on your profile, the Instagram grid maker lets you arrange and preview the feed so you catch cropping or alignment issues before they go live.

Whichever path you take, the principle is the same: match Instagram's preferred size up front so the platform does as little resizing as possible. Default to 1080x1350 for feed carousels, keep every slide on the same ratio, export clean JPEG or PNG at 1080 wide, and let a tool handle the sizing so you can spend your attention on the words and the hook. The easiest way to never get this wrong is to draft your slides in the studio, where the output is the correct size every time.