Flexible variants allow you to create variants with dynamic resizing which can provide more options than regular variants allow. This option is not enabled by default.

## Enable flexible variants via the Cloudflare dashboard

1. Log in to the [Cloudflare dashboard](https://dash.cloudflare.com/login) and select your account.
2. Select **Images** > **Variants**.
3. Enable **Flexible variants**.

## Enable flexible variants via the API

Make a `PATCH` request to the [Update a variant endpoint](https://developers.cloudflare.com/api/resources/images/subresources/v1/subresources/variants/methods/edit/).

```bash
curl --request PATCH https://api.cloudflare.com/client/v4/accounts/{account_id}/images/v1/config \
--header "Authorization: Bearer <API_TOKEN>" \
--header "Content-Type: application/json" \
--data '{"flexible_variants": true}'
```

After activation, you can use [transformation parameters](https://developers.cloudflare.com/images/transform-images/transform-via-url/#options) on any Cloudflare image. For example,

`https://imagedelivery.net/{account_hash}/{image_id}/w=400,sharpen=3`

Note that flexible variants cannot be used for images that require a [signed delivery URL](https://developers.cloudflare.com/images/manage-images/serve-images/serve-private-images).
