url

Lets consider following code for HTTP task:

{% assign file_url = "https://cdn.shopify.com/s/files/1/0062/1124/0007/files/paper-plane.png?v=1626373338" %}

{% json upload_options %}
  {
    "fileName": "user_provided_photo.png",
    "url": {{file_url | json }},
    "public": false
  }
{% endjson %}

{% assign file_result = upload_options | file %}

With following code your file will be transferred from url to your storage.