Instagram Carousel Size Guide 2026: Dimensions, Ratios & Best Practices
Updated August 2026 · 7 min read
Instagram carousel posts consistently outperform every other format on the platform. Carousels earn an average engagement rate of 5.13%, compared to just 1.9% for single images. They also get a second chance: if a user doesn't engage the first time, Instagram re-shows the carousel starting on a different slide. Getting the dimensions right is the difference between a carousel that stops the scroll and one that gets cropped, blurred, or ignored.
This guide covers every carousel dimension, aspect ratio, and safe zone you need for 2026, plus the new 3:4 format Instagram added this year.
Instagram Carousel Dimensions at a Glance
| Format | Dimensions | Ratio | Best For |
|---|---|---|---|
| Portrait (Recommended) | 1080 × 1350 | 4:5 | Maximum screen space, highest engagement |
| New Portrait (2026) | 1080 × 1440 | 3:4 | Extra vertical space, text-heavy content |
| Square | 1080 × 1080 | 1:1 | Clean grid, consistent profile look |
| Landscape | 1080 × 566 | 1.91:1 | Photography, cinematic content |
What Changed in 2026
Two updates matter this year:
New 3:4 carousel option. Instagram now supports 1080 × 1440 pixel slides, giving 90 extra pixels of height compared to the standard 4:5 format. This is useful for text-heavy carousels, educational content, or full-body product shots. It is not yet the default — 4:5 still has the longest engagement track record.
Maximum slides increased to 20. Up from the previous limit of 10. Longer carousels allow deeper storytelling, step-by-step tutorials, and comprehensive product showcases. Posts with 10 slides still get the most reach on average.
Which Aspect Ratio Should You Choose?
4:5 (1080 × 1350) — Still the safest bet
Fills the most vertical space in the feed without getting cropped on the profile grid. Every major scheduling tool and design platform supports it as a preset. Use this unless you have a specific reason to switch.
3:4 (1080 × 1440) — New option for 2026
Extra vertical space is useful for text-heavy educational carousels, product catalogs, or full-body fashion shots. Check how it displays on your profile grid before committing.
1:1 (1080 × 1080) — Cleanest grid
Best for brands that prioritize a uniform profile grid. Takes up less screen space in the feed, so engagement may be slightly lower than portrait formats.
1.91:1 (1080 × 566) — Use sparingly
Landscape carousels appear small in the mobile feed and look lost on the profile grid. Only use when the source content is genuinely landscape.
The Rules That Matter Most
All slides must use the same aspect ratio.
Instagram forces every slide to match the first image. If your first slide is 4:5 and your third is 1:1, Instagram will crop the 1:1 slide to match. Design every slide in one consistent format from the start.
Export at exactly 1080 pixels wide.
Instagram downscales anything larger than 1080px wide, which introduces softness. Upload at the exact target width for maximum sharpness. For 4:5, that means 1080 × 1350. For 3:4, that means 1080 × 1440.
Keep critical elements inside the safe zone.
Leave at least 10% margin from all edges. Instagram overlays navigation arrows, dots, and UI elements that can cover text or faces near the edges of each slide.
Use the right file format.
Use JPEG for photos and PNG for text-heavy graphics. PNG keeps text sharper at the cost of larger file sizes. Maximum file size is 30MB per image.
Convert to sRGB before export.
Instagram converts all color profiles to sRGB anyway. If you upload in Adobe RGB or Display P3, the conversion can shift colors. Do the conversion yourself for predictable results.
Carousel Safe Zones
Instagram overlays UI elements on carousel slides. Here's where to keep your important content:
Top 5%: Account name and follow button overlay
Bottom 10%: Caption preview, like/comment/share buttons, and carousel dots
Left and right edges: Swipe indicators and navigation arrows
Safe area: Keep all text, faces, and key visual elements within the center 90% of each slide.
Font Size Minimums for Readability
Small text disappears on mobile. Use these minimums to keep your carousel readable:
| Text Element | Minimum Size | Recommended |
|---|---|---|
| Headline / Hook text | 60px | 80px |
| Subheading | 40px | 55px |
| Body text | 24px | 32px |
| Caption / Fine print | 18px | 22px |
Why 4:5 Carousels Get More Engagement
The math is simple: a 4:5 carousel slide at 1080 × 1350 pixels occupies 50% more screen area than a 1:1 square at 1080 × 1080. On a tall phone screen, that extra vertical space means your content is harder to scroll past. Users spend more time looking at it, which signals to Instagram's algorithm that the post is worth showing to more people.
Posts with 10 slides get the most reach on average. Carousels with a text-based first slide get 56% more saves than photo-only carousels. Educational carousels are saved at 4× the rate of personal photo posts.
Common Mistakes to Avoid
| Mistake | Fix |
|---|---|
| Mixing 4:5 and 1:1 in the same post | Pick one ratio for the entire carousel. |
| Critical text in the bottom 10% | Keep all text inside a 10% safe margin. |
| Uploading 2160 × 2700 slides | Export at 1080 wide. Anything larger gets downscaled. |
| Designing covers without checking the grid | Center your hook so it survives the profile grid crop. |
| Saving text-heavy slides as JPEG | Use PNG for text-heavy slides to keep type sharp. |
| Using Adobe RGB color profile | Convert to sRGB before export. |
How to Resize Your Carousel Slides
If your slides aren't the right size, use our free resizer to fix them in seconds. Upload your images, select the 4:5 or 1:1 preset, and download properly sized files ready for Instagram.
Resize your carousel slides now — free, private, no uploads to any server.
Frequently Asked Questions
Is Instagram 4:5 or 3:4 in 2026?
Both are supported. 4:5 (1080 × 1350) is still Instagram's recommended preset with the longest engagement track record. 3:4 (1080 × 1440) was added in 2026 and gives slightly more vertical space, mostly useful for text-heavy or full-body content.
Can carousels mix images and videos?
Yes. You can include both images and video clips in the same carousel. Videos can be up to 60 seconds per slide, with a maximum file size of 4GB per video.
How many slides should a carousel have?
Posts with 10 slides get the most reach on average. However, the maximum is now 20 slides as of 2026. Use as many slides as your content needs — don't pad for the sake of it.
Does the first slide determine the crop for all others?
Yes. Instagram forces every slide to match the aspect ratio of the first image. Get the first slide right and all others will follow.
What file format should carousel slides be?
Use JPEG for photos and PNG for text-heavy graphics. PNG preserves text sharpness at the cost of larger file sizes. Both formats are accepted up to 30MB per image.