Using the correct image size on Instagram is important. Wrong dimensions can make images look blurry, cropped, or stretched. This guide explains the best image sizes for Instagram posts, stories, and reels in a simple way. Resize tool
Best Image Size for Instagram Posts
📌 Square Post
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Size: 1080 × 1080 pixels
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Aspect ratio: 1:1
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Best for normal photo posts
📌 Portrait Post
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Size: 1080 × 1350 pixels
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Aspect ratio: 4:5
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Takes more screen space and gets better engagement
📌 Landscape Post
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Size: 1080 × 566 pixels
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Aspect ratio: 1.91:1
Best Image Size for Instagram Stories
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Size: 1080 × 1920 pixels
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Aspect ratio: 9:16
Tips:
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Keep text and faces in the center
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Avoid top and bottom edges (UI covers them)
Best Image Size for Instagram Reels
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Size: 1080 × 1920 pixels
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Aspect ratio: 9:16
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Format: JPG or PNG
For reel covers, keep important content in the center square so it looks good on your profile grid.
Best Image Format for Instagram
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Photos → JPG
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Graphics & text → PNG
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Compressed web images → WebP (before upload)
Instagram compresses images automatically, so uploading optimized images gives better quality.
How to Resize Images for Instagram Easily
You can resize images online without installing any software:
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Open an image resize tool
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Upload your image
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Select Instagram size
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Download the resized image
You can use ImgFitPro’s free Image Resizer to resize images quickly and safely in your browser.
Common Instagram Image Mistakes ❌
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Uploading very large images
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Using wrong aspect ratio
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Adding text near edges
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Uploading already over-compressed images
Why Correct Image Size Matters
Using the correct size:
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Keeps images sharp
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Improves engagement
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Avoids unwanted cropping
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Saves mobile data
Conclusion
To get the best quality on Instagram:
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Use 1080px width images
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Follow correct aspect ratios
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Resize images before uploading
With proper sizing and optimization, your Instagram posts will always look professional.