Instagram Carousel Size & Dimensions: The Complete 2026 Guide

Use the wrong dimensions and your carousel gets cropped, letterboxed, or compressed before a single person swipes. Here are the exact numbers for every Instagram carousel format — and which one you should actually use.

The Quick Answer

The best size for Instagram carousels in 2026 is 1080 × 1350px (4:5 portrait). This format takes up more vertical space in the mobile feed than square posts, which means more visibility per impression. Instagram caps portrait carousels at 4:5 — anything taller is cropped to that ratio.

Instagram Carousel File Requirements

Unlike LinkedIn carousels (which are PDF uploads), Instagram carousels are native multi-image posts. Each slide is a separate image file — JPG or PNG.

Why 4:5 Portrait Outperforms Square

The math is simple: a 4:5 portrait post takes up 33% more vertical screen space than a square post on a standard mobile screen. More screen space means a higher chance of stopping the scroll before the user moves on.

On a typical iPhone with a 390px wide screen, a 1:1 square post occupies roughly 390 × 390px of the feed. A 4:5 portrait post occupies roughly 390 × 488px. That extra 98px of vertical height makes a meaningful difference in the feed — it's the difference between content that gets noticed and content that gets skipped.

Which Aspect Ratio Should You Use?

4:5 Portrait — Best for Instagram Reach

Portrait format (1080 × 1350px) is the highest-performing format for Instagram carousels in 2026. It dominates the mobile feed, rewards saves, and performs well with the algorithm because it generates more swipe events per post. If you're creating Instagram-first content, this is the format to use.

1:1 Square — Best for Cross-Platform

Square (1080 × 1080px) is the safest choice if your carousel will be posted on both Instagram and LinkedIn. It displays correctly on both platforms without any cropping. The tradeoff is reduced feed real estate on Instagram compared to portrait. Good for creators who want one design for both channels.

Landscape — Avoid for Carousels

Landscape format (1080 × 566px) is rarely a good choice for carousels. It takes up less screen space than square, reducing visibility. It's occasionally useful for screenshots, wide data visualizations, or panoramic images — but for text-based educational carousels, avoid it entirely.

Text Size and Readability at 1080 × 1350px

The portrait canvas is taller but the same width as square. Headline sizes stay the same; you just have more vertical space to use. Here are the recommended sizes for a 1080px wide canvas:

At 1080px wide, these sizes render clearly on any modern phone. The extra vertical space in portrait format gives you more room for body copy — but resist the urge to fill it all. White space improves readability and makes your slides feel more premium.

Safe Zones and Padding

Instagram crops and displays slides with slight rounding at the corners in the feed. Keep important content away from the edges:

• Outer padding: minimum 60px on all sides at 1080px canvas
• Text margins: keep all text at least 80px from any edge
• Logo/branding: corner placement with at least 50px clearance from edges
• Cover slide: design it to work as a standalone — it's the thumbnail shown in the grid and in the feed before the swipe

Common Instagram Carousel Size Mistakes

Designing in landscape, posting to Instagram

A common mistake: creating slides in a 16:9 widescreen template (PowerPoint default, many Canva templates) and trying to post them to Instagram. The result is heavy letterboxing — black bars above and below — and very small text. Always start with a portrait or square canvas when designing for Instagram.

Inconsistent slide dimensions

All slides in an Instagram carousel must be the same aspect ratio. Instagram uses the first slide's ratio and crops everything else to match. If slide 1 is 4:5 and slide 3 is 1:1, slide 3 will be cropped to 4:5. Lock your canvas dimensions before you start — changing mid-carousel causes layout breaks.

Uploading at low resolution

Instagram compresses images on upload. If you start at 1080px wide, the final quality after compression is acceptable. If you start smaller — say 600px — Instagram's compression makes text blurry and edges rough. Always export at 1080px minimum. Higher source resolution (1440px) survives compression better but isn't required.

Forgetting the last slide CTA

This is not a size issue, but it costs as much reach as getting dimensions wrong. The last slide of an Instagram carousel should ask viewers to save the post. Saves are one of the highest-weight signals for the Instagram algorithm. A carousel without a save CTA leaves organic reach on the table. See our guide on Instagram carousels that get saved for the full breakdown.

How to Export the Right Size

If you're building slides manually in design software:

• Figma: Set frame to 1080 × 1350px, export each frame as PNG at 1x or 2x
• Canva: Use the "Instagram Post (Portrait)" template (1080 × 1350px), download as PNG
• Photoshop: New document at 1080 × 1350px at 72 DPI (screen resolution), export as PNG
• Carouselli: Choose Instagram format (4:5), generate or design your slides, export as PNG — all slides download at the correct dimensions automatically

After exporting, always preview the images at 100% zoom before uploading. Check that text is sharp, no content is near the edges, and all slides are the same dimensions. Then upload all images at once as a single Instagram post.

Summary: Instagram Carousel Size Cheat Sheet