maxtar.github.io/themes/hugo-geekdoc/layouts/shortcodes/avatar.html

{{- $source := ($.Page.Resources.ByType "image").GetMatch (printf "%s" (.Get "name")) }}
{{- $customAlt := .Get "alt" }}
{{- $customSize := .Get "size" | lower }}
{{- $customAnchor := default "smart" (.Get "anchor") | title }}
{{- $data := newScratch }}

{{- with $source }}
  {{- $caption := default .Title $customAlt }}
  {{- $isSVG := (eq .MediaType.SubType "svg") }}
  {{- $origin := . -}}

  {{- if $isSVG }}
    {{- $data.SetInMap "size" "tiny" "160" }}
    {{- $data.SetInMap "size" "small" "300" }}
    {{- $data.SetInMap "size" "medium" "600" }}
    {{- $data.SetInMap "size" "large" "900" }}
  {{- else }}
    {{- $data.SetInMap "size" "tiny" (printf "160x160 %s" $customAnchor) }}
    {{- $data.SetInMap "size" "small" (printf "300x300 %s" $customAnchor) }}
    {{- $data.SetInMap "size" "medium" (printf "600x600 %s" $customAnchor) }}
    {{- $data.SetInMap "size" "large" (printf "900x900 %s" $customAnchor) }}
  {{- end -}}

  <div class="flex justify-center">
    <figure
      class="gdoc-markdown__figure gdoc-markdown__figure--round">
      <a class="gdoc-markdown__link--raw" href="{{ .Permalink }}">
        <picture>
          {{- $size := $data.Get "size" }}
          {{- if not $isSVG }}
            {{- if ne $customSize "origin" }}
            <source
              {{- if $customSize }}
                srcset="{{ ($origin.Fill (index $size $customSize)).Permalink }}"
              {{- else }}
                srcset="{{ ($origin.Fill (index $size "small")).Permalink }} 600w, {{ ($origin.Fill (index $size "medium")).Permalink }} 1200w" sizes="100vw"
              {{- end }}
            />
            {{- end }}
          {{- end }}
          <img
          {{- if $isSVG }}
            src="{{ $origin.Permalink }}" width="{{ index $size (default "medium" $customSize) }}"
          {{- else }}
            {{- if eq $customSize "origin" }}
              src="{{ $origin.Permalink }}"
            {{- else }}
              src="{{ ($origin.Fill (index $size "large")).Permalink }}"
            {{- end }}
            alt="{{ $caption }}"
          {{- end }}
          />
        </picture>
      </a>
    </figure>
  </div>
{{- end }}