{
  "$schema": "https://json-schema.org/draft/2020-12/schema",
  "$id": "#/components/schemas/ImagePNGDataUri",
  "title": "ImagePNGDataUri",
  "description": "must be a data URL with base64 PNG image data, e.g., data:image/png;base64,<BASE64_IMAGE_DATA>",
  "type": "string",
  "format": "uri",
  "example": "data:image/png,YW5faW1hZ2VfZmlsZQ==",
  "pattern": "^data:image/png(;base64)?,(?:[A-Za-z0-9+/]{4})*(?:[A-Za-z0-9+/]{2}==|[A-Za-z0-9+/]{3}=)?$",
  "x-validation-message": "must be a data URL with base64 PNG image data, e.g., data:image/png;base64,<BASE64_IMAGE_DATA>"
}