Are my images uploaded anywhere?

No. Every tool runs inside your browser using Web Workers and WebAssembly. Files never leave your device, and there is no server, account or tracking.

What ratio should I use for Instagram?

1:1 for square posts, 4:5 for portrait posts and 9:16 for Stories and Reels. All three are presets.

Can I avoid cropping anything off?

Yes. Switch to “Add borders” and the image is padded with a color of your choice to reach the ratio.

Change aspect ratio

Crop to a new ratio with a draggable frame, or add borders so nothing is cut off. Perfect for social media sizes.

or drop files here, or paste from your clipboard

JPG, PNG, WebP, AVIF, GIF, BMP · processed on your device

How to change aspect ratio online without uploading

Turn any photo into a square, a 9:16 story, a 16:9 thumbnail or a 4:5 portrait. Crop with a draggable frame or pad with a color to keep the whole picture.

1Drop your images
2Pick a ratio preset or type a custom one
3Drag the frame, or choose an anchor for the whole batch
4Download

Frequently asked questions

Are my images uploaded anywhere?: No. Every tool runs inside your browser using Web Workers and WebAssembly. Files never leave your device, and there is no server, account or tracking.
What ratio should I use for Instagram?: 1:1 for square posts, 4:5 for portrait posts and 9:16 for Stories and Reels. All three are presets.
Can I avoid cropping anything off?: Yes. Switch to “Add borders” and the image is padded with a color of your choice to reach the ratio.