Resize Image for Instagram Post — 1080×1080px
Instantly resize any photo to the correct Instagram Post dimensions (1080×1080px). Square 1:1 format — the default Instagram feed post size. Free, no watermark, runs in your browser.
✓ Free · ✓ No upload · ✓ Works offline in your browser
Instagram Post Tips
- •Square (1:1) is safe and shows fully in feed without cropping
- •Portrait (4:5) actually gets more screen real estate in the feed
- •JPEG under 8 MB recommended for fast upload
Common presets
Frequently Asked Questions
What is the correct image size for Instagram Post?
The recommended Instagram Post image size is 1080×1080 pixels. Square 1:1 format — the default Instagram feed post size. This tool resizes your image to exactly those dimensions.
How do I resize an image for Instagram Post?
Upload your image above, and it will be automatically pre-set to 1080×1080px. Click Resize and download the result as a high-quality JPG — free, no watermark.
What aspect ratio is Instagram Post?
Instagram Post uses a 1080:1080 pixel ratio. Square 1:1 format — the default Instagram feed post size.
Will my image be cropped when I resize it for Instagram Post?
If your original image has a different aspect ratio than 1080×1080, it will need to be either cropped (to fill the frame exactly) or letterboxed (fitted with blank space). Choose "Cover" mode to crop-fit, or "Contain" to fit without cropping.