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Cloudflare Image Optimization
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Enable flexible variants

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 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.

curl -X PATCH<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 on any Cloudflare image. For example,<ACCOUNT_HASH>/<IMAGE_ID>/w=400,sharpen=3

Note that flexible variants cannot be used for images that require a signed delivery URL.