Resize image for Instagram.

Stop Instagram from ruining your crop. Pre-configured for the perfect 1080x1350 portrait ratio.

What is the best image size for Instagram?

The best image size for an Instagram post is 1080x1350 pixels (a 4:5 aspect ratio). This 'portrait' size takes up the maximum amount of screen real estate on mobile devices.

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Why use a dedicated Instagram tool?

General purpose tools often fail when you need to meet strict, platform-specific requirements. By using our pre-configured engine for Instagram, you ensure your file meets exact dimensions, quality limits, and format specifications automatically.

Zero-Upload Privacy: Unlike other cloud converters, FileCircle utilizes WebAssembly and HTML5 Canvas to process your files directly inside your browser.

Best of all, because FileCircle relies entirely on your browser's local processing power, your files are never uploaded to a cloud server. You get enterprise-grade optimization with 100% absolute privacy.

Instagram Format	Dimensions	Aspect Ratio
Portrait Post (Best)	1080 x 1350 px	4:5
Square Post	1080 x 1080 px	1:1
Stories / Reels	1080 x 1920 px	9:16

How to crop a photo for Instagram

Prevent the auto-cropper from cutting off your photo.

Upload

Drop your photo.

Adjust

The window is pre-locked to a 4:5 vertical ratio.

Download

Save the perfectly sized image.

Expert Guides

The Ultimate Guide to Instagram Image Sizes in 2024

Stop Instagram from cropping your photos. Learn the exact dimensions for posts, stories, and reels to maximize engagement.

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Don't let your passport application get rejected. Learn the strict US Department of State photo requirements and how to crop them perfectly.

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Frequently Asked Questions

What is the best aspect ratio for Instagram?

The 4:5 portrait ratio (1080x1350 pixels) is the best because it occupies the maximum vertical screen space on a smartphone, capturing user attention better than square or landscape posts.

Why do my Instagram posts look blurry?

If you upload massive 4K images, Instagram's algorithm aggressively compresses them, causing artifacts and blurring. Pre-resizing your image to exactly 1080px width prevents the app from destroying your photo's quality.

Can I make a square post instead?

Yes, if you prefer the classic grid look, you can manually adjust the tool dimensions to 1080x1080, or use our dedicated Instagram Square Resizer.

What if I want to turn multiple photos into a document?

If you are trying to create a portfolio or presentation from your images, you can combine them using our Images to PDF tool instead of posting them as a carousel.

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