Instagram Carousel Size and Dimensions: The 2026 Specs Guide

Nothing undermines a good carousel faster than the wrong dimensions. You spend an hour on the copy, the design looks sharp in your editor, and then Instagram crops off the headline or compresses the whole thing into a blurry mess. The fix is almost always a sizing decision you made before you started.

This guide covers the exact sizes, aspect ratios, and resolution Instagram uses in 2026, plus the safe-zone rules that keep your text from getting cut off. Get these right once and you can stop thinking about them.

The Short Answer: Use 1080 x 1350

If you remember one thing, remember this. For carousels in 2026, design at 1080 x 1350 pixels, which is a 4:5 portrait aspect ratio.

Portrait posts take up more vertical space in the feed than square ones, which means more screen real estate, more attention, and more reason for someone to stop scrolling. Instagram has favored taller content for years, and 4:5 is the tallest ratio the feed supports without cropping.

The old square standard of 1080 x 1080 still works, but it leaves engagement on the table. Unless you have a specific reason to go square, default to 4:5.

Full Carousel Specs for 2026

Here are the dimensions that matter, in one place.

Spec	Recommended	Notes
Aspect ratio	4:5 (portrait)	Maximum feed real estate
Pixel size	1080 x 1350	The reliable default
Square alternative	1080 x 1080	Works, but smaller in feed
File format	JPG or PNG	PNG for text-heavy slides
Max slides	20	Just because you can does not mean you should
Color space	sRGB	Avoid color shifts on upload

A note on slide count: Instagram allows up to 20 slides, but the sweet spot for engagement is far lower. For a deeper look at the tradeoff, see the guide on how many slides a carousel should have.

Aspect Ratio: Why 4:5 Beats Square

Aspect ratio is the relationship between width and height. A 4:5 ratio means for every 4 units wide, the image is 5 units tall, giving you that upright rectangle.

The reason it matters is simple: feed space equals attention. A portrait slide pushes competing content further down the screen, so for the moment someone is looking at your post, they are looking at only your post. Square slides leave a strip of the next post visible, which is a small but constant invitation to keep scrolling.

One caution: keep every slide in a carousel the same aspect ratio. Mixing 4:5 and 1:1 slides in one post causes Instagram to crop inconsistently, and the swipe feels jarring.

Resolution and File Size

Design at 1080 pixels wide at minimum. Going higher, such as 1350 x 1688, gives Instagram more data to work with and survives compression better, especially on slides with fine text.

Export as JPG for photo-heavy slides and PNG for text-heavy ones. PNG preserves crisp edges on letters and shapes, which is what you want when your slide is mostly typography. Keep files under Instagram’s limits and stick to the sRGB color space so your carefully chosen palette does not shift on upload.

If your colors look different after posting, sRGB is almost always the culprit. The color palette guide covers how to keep your scheme consistent from design to feed.

Safe Zones: Where Not to Put Important Content

This is the rule that saves the most carousels. Instagram overlays interface elements on parts of your slide, and on the first slide especially, the bottom is busy with the caption, username, and action buttons.

Keep these margins clear:

Top and bottom: Leave roughly 250 pixels of breathing room from each edge for critical text and logos.
Sides: Keep at least 60 pixels of padding so nothing touches the frame.
First slide: Treat the lower third as off-limits for must-read text, since that is where the caption and icons sit.

When in doubt, center your key message vertically. A headline parked dead center is never at risk of being cropped or hidden behind an icon.

How Carousel Handles Sizing for You

The fastest way to never think about any of this again is to let the tool enforce it. Carousel builds every slide at the correct 4:5 dimensions with safe-zone margins baked into the templates, then exports clean, properly sized files for Instagram, LinkedIn, and TikTok. You design the message; the app guarantees it lands on-screen, uncropped, on every platform.

For platform-specific tips beyond sizing, the Instagram carousel guide covers hooks, slide order, and CTAs.

Key Takeaways

Default to 4:5 portrait at 1080 x 1350 pixels for maximum feed real estate.
Keep every slide in a carousel the same aspect ratio to avoid inconsistent cropping.
Export as PNG for text-heavy slides, JPG for photos, always in sRGB.
Leave roughly 250 pixels of top and bottom margin, and keep the first slide’s lower third clear.
Up to 20 slides are allowed, but fewer almost always performs better.