Instagram Post Resizer

Resize any image to 1080×1080 px — the ideal square format for Instagram feed posts and carousels. Looks sharp on all devices. Free, private, instant.

Dimensions:1080 × 1080 pxAspect ratio:1:1 (square)Format:JPG / PNGMax file size:30 MBUsage:Feed posts, carousels

Supports JPEG, PNG, WebP — output saved as JPEG

How to resize your Instagram Post image.

3 simple steps — no software required.

1
Step 1

Upload your image

Click Upload Image or drag and drop any JPEG, PNG, or WebP file. Works with photos, graphics, and screenshots.

2
Step 2

Dimensions pre-set to 1080×1080

Width and height are already set to 1080×1080 px — Instagram's recommended square format. Adjust if needed, then click Resize.

3
Step 3

Download and post

Download your resized image instantly. Upload directly to Instagram for a perfectly sized feed post or carousel slide.

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Resize images to 1080×1080 px for Instagram — free, instant.

Perfect square images for Instagram feed posts. Processed securely and never stored.

Why 1080×1080 px for Instagram posts?

Instagram's feed displays images at up to 1080 pixels wide. The 1:1 square format (1080×1080 px) is the safest choice because it displays correctly in every Instagram placement — the main feed, the explore tab, the profile grid, and carousel posts. Non-square images are cropped to square in the profile grid, so a square original avoids unwanted cropping.

Instagram image quality tips

Instagram re-compresses every uploaded image. To get the sharpest result after Instagram's compression, upload a 1080×1080 px JPEG saved at 85–95% quality. Avoid heavily pre-compressed images — start from the highest quality source available. Use sRGB colour profile for accurate colour reproduction across devices.

Instagram post vs Instagram story dimensions

Instagram feed posts use a 1:1 square (1080×1080), 4:5 portrait (1080×1350), or 1.91:1 landscape (1080×608) aspect ratio. Instagram Stories and Reels use a 9:16 vertical format (1080×1920). Use our Instagram Story Resizer for vertical content. Always match the format to the placement for the best display.

Your images are private

Images are processed on our server and deleted immediately after your download. We never store, index, or share your files.

Frequently asked questions.

Everything you need to know about Instagram Post image requirements.

Instagram recommends 1080×1080 px for square feed posts, which is the most universally compatible format. Portrait posts (1080×1350) and landscape posts (1080×608) are also supported, but the 1:1 square format displays correctly in all placements including grid view, feed, and explore.

Yes — Instagram re-compresses images after upload. Starting with a high-quality 1080×1080 px JPEG at 90%+ quality gives the best result after Instagram's compression. Uploading larger images (e.g., 2160×2160) does not improve quality since Instagram downsizes them anyway.

JPEG is best for photographs and images with many colours. PNG is better for graphics, logos, text overlays, and images with sharp edges or transparency. Instagram accepts both formats and converts them internally.

Yes. Each slide in an Instagram carousel should be 1080×1080 px for the square format. You can also use 1080×1350 (portrait) or 1080×608 (landscape) for carousels, but all slides must use the same aspect ratio.

By default, the editor resizes to exactly 1080×1080. If your original image is not square, this will crop or stretch it. For best results, crop your image to square before resizing, or use the aspect-ratio lock in our Image Cropper tool first.

Your image is sent to our secure processing server over HTTPS and deleted immediately after your download. We never store, share, or retain your files.