Instagram keeps changing its preferred sizes, and uploading the wrong dimensions means awkward cropping. Resizing to the right size first puts you in control of the frame.
The recommended size
Instagram feed posts look best at 1080 by 1080 pixels for a square, or 1080 by 1350 for a 4:5 portrait, which takes up more space in the feed.
How to resize for Instagram
- Open the Instagram Post Resizer.
- Add your image.
- It is set to the correct post image dimensions, so you just position the content.
- Download and upload to Instagram.
Processing happens in your browser, so your images stay private.
Tips that help
- Use 1080 by 1350 portrait to claim more screen space in the feed.
- Keep important content away from the very edges in case of slight cropping.
- Square 1:1 is the safe choice if you reuse the image across platforms.
Finish before you post
Compress the final image with the Image Compressor so it uploads fast, and crop with Crop to Aspect Ratio if you need a different shape.
Frequently asked questions
What size should a post image be on Instagram?
Instagram feed posts look best at 1080 by 1080 pixels for a square, or 1080 by 1350 for a 4:5 portrait, which takes up more space in the feed.
Will resizing distort my Instagram image?
Not if you keep the aspect ratio locked. The tool scales the image to fit the target shape cleanly.
Is my image uploaded to resize it?
No. Resizing runs in your browser, so your image stays on your device.