Small image upload
When you want to allow your users to upload some additional images with use of the small image upload UI, you can use the small image upload field.
That field uses the simplest possible syntax:
{
"name": "favicon",
"label": "Website favicon",
"note": "The ideal size of a favicon is 16x16 pixels.",
"value": "",
"type": "smallupload"
}
If you want to allow users to upload bigger images using bigger UI, please consider use of the image upload field.