Does Instagram only allow square posts?

No, Instagram supports other ratios, but 1:1 at 1080×1080 is widely used and predictable across the feed.

Will quality be reduced?

The tool scales your selection to 1080×1080. Very small sources may look soft; start with the largest image you have.

No. Everything runs locally in your browser tab.

Yes, when your browser supports WebP encoding. Otherwise use PNG or JPEG.

Create a clean 1:1 square at 1080×1080 — a reliable size for Instagram feed posts when you want symmetry and safe framing.

Output size: 1080 × 1080 px · Square feed posts (1:1) on Instagram.

A 1080×1080 square fits classic grid layouts and avoids unexpected crops on many devices.

Use the crop box to decide what stays in frame; the export is always exactly 1080×1080 pixels.

Your original file never leaves the device unless you choose to upload it to Instagram yourself.

Does Instagram only allow square posts?: No, Instagram supports other ratios, but 1:1 at 1080×1080 is widely used and predictable across the feed.
Will quality be reduced?: The tool scales your selection to 1080×1080. Very small sources may look soft; start with the largest image you have.
Do you store my photos?: No. Everything runs locally in your browser tab.
Can I export WebP?: Yes, when your browser supports WebP encoding. Otherwise use PNG or JPEG.