Instagram Post Resizer
Resize images to Instagram post sizes — 1080×1080 square, 1080×1350 portrait, landscape.
- Free to use
- Browser-based processing
- No account required
- Files never uploaded
About Instagram Post Resizer
The Instagram Post Resizer crops or scales any image to Instagram's supported post dimensions — 1080×1080 for square, 1080×1350 for portrait, or landscape — so your photo displays without awkward auto-cropping. Pick the format and the tool handles the sizing in the browser, no upload required.
How to Use Instagram Post Resizer
- 1
Upload an image
Add the photo you want to post.
- 2
Choose a post format
Select square (1080×1080), portrait (1080×1350) or landscape.
- 3
Download
Save the correctly sized image ready to upload to Instagram.
Frequently Asked Questions
What's the best Instagram post size?
1080×1080 (square) is the safe default; 1080×1350 (portrait) takes up more screen space in the feed. Choose based on the look you want.
Why does Instagram crop my photos?
Instagram fits images to its supported ratios. Resizing first means you decide the framing instead of letting the app crop it for you.
Will resizing reduce quality?
Instagram's recommended widths are 1080px, so resizing to those dimensions keeps photos sharp in the app.
Are my photos uploaded?
No. Resizing happens in your browser; your image isn't sent anywhere.