Carousel posts are one of the most powerful tools on Instagram, allowing creators and brands to share multiple images or videos in a single post. But to make your content shine, you need to get one key detail right: Instagram carousel dimensions.
In this post, we’ll break down the ideal sizes, aspect ratios, and tips to ensure your carousel looks polished and professional—whether it’s for a personal page or a Postunreel campaign.
What Are Instagram Carousel Posts?
An Instagram carousel allows users to upload up to 10 images or videos in one post. Viewers can swipe through them horizontally, making it perfect for:
- Storytelling
- Tutorials
- Before/after showcases
- Product features
But all that content only works if the visuals are correctly sized.
Ideal Instagram Carousel Dimensions
To make sure your carousel posts look great across all devices, use the following Instagram carousel dimensions:
- Square (1:1 ratio): 1080 x 1080 pixels
- ✔️ Most common and safest for uniform design
- Portrait (4:5 ratio): 1080 x 1350 pixels
- ✔️ Takes up more screen space — great for engagement
- Landscape (1.91:1 ratio): 1080 x 566 pixels
- ✔️ Less popular but useful for wide visuals
Important: All carousel slides must have the same aspect ratio. If the first image is square, every following slide must also be square.
File Size and Format Tips
- Max file size: 30MB for images, 4GB for videos
- Formats: JPEG or PNG for images, MP4 for videos
- Resolution: Always aim for 1080p for the best quality
Why Dimensions Matter
Using the correct Instagram carousel dimensions helps your post:
- Avoid cropping or layout issues
- Load faster and look cleaner
- Maintain a consistent aesthetic
- Improve engagement with a more professional look
Bad dimensions can lead to blurry images, awkward cuts, and missed opportunities to connect with your audience.
Final Thoughts
If you want your carousel posts to stand out—on both Instagram and Postunreel—nailing the Instagram carousel dimensions is a must. Stick to the recommended sizes, plan your layout in advance, and you’ll be swiping your way to better reach and results.
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