{{- $thumbnail := partial "images/photo_thumbnail.html" (dict "Page" . "Width" 1280 "Height" 1280) -}}
<item>
  {{ partial "rss_item_metadata.rss" . }}
  <description>{{ `<![CDATA[` | safeHTML }}
    <img src="{{ $thumbnail.Permalink }}">
    {{ .Content }}
  ]]></description>
</item>