> ## Documentation Index
> Fetch the complete documentation index at: https://carat.im/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Change image aspect ratio

> Adjust the canvas size to change your image to the desired aspect ratio.

This feature changes the canvas size based on the original image content. You can expand or crop the canvas through text requests. When expanding, Carat AI automatically fills the empty space to match the surrounding background.

## How to use

Select the image you want to resize, then request your desired aspect ratio in the Chat.

```text theme={null}
Expand this image to 16:9 landscape ratio.
```

```text theme={null}
Crop this image to 1:1 square ratio.
```

## Supported ratios

Currently supports common screen aspect ratios.

* 16:9 (landscape) / 9:16 (portrait)
* 4:3 (landscape) / 3:4 (portrait)
* 1:1 (square)

<Tip>
  Useful for expanding horizontal photos to vertical 9:16 (Shorts, Reels) ratio, or cropping part of a wide landscape photo to 1:1 ratio.
</Tip>