{{- $socialImage := partial "head/social-image.html" . -}}
{{- $openGraphImage := $socialImage.openGraph -}}
{{- $image := dict -}}
{{- with $openGraphImage.url -}}
  {{- $image = dict
    "@type" "ImageObject"
    "url" .
  -}}
  {{- with $openGraphImage.width -}}
    {{- $image = merge $image (dict "width" .) -}}
  {{- end -}}
  {{- with $openGraphImage.height -}}
    {{- $image = merge $image (dict "height" .) -}}
  {{- end -}}
  {{- with $openGraphImage.alt -}}
    {{- $image = merge $image (dict "caption" .) -}}
  {{- end -}}
{{- end -}}
{{- return $image -}}