strimertul-website/themes/strimertul/layouts/_default/_markup/render-image.html

<figure width="100%">
  <a href="#{{ .Destination | md5 }}-lightbox"
    ><picture>
      {{ if not (hasPrefix .Destination "http" ) }}
        {{ $avifPath:= replace .Destination (path.Ext .Destination) ".avif" }}
        {{ $avifPathStatic := printf "%s/static/%s" .Page.File.Dir $avifPath }}
        {{ if (fileExists
          $avifPathStatic)
        -}}
          <source srcset="{{ $avifPath | safeURL }}" type="image/avif" />
        {{- end }}
        {{ if eq (path.Ext .Destination) ".jpg" }}
          <source type="image/jpeg" srcset="{{ .Destination | safeURL }}" />
        {{ end }}
        {{ if eq (path.Ext .Destination) ".jpeg" }}
          <source type="image/jpeg" srcset="{{ .Destination | safeURL }}" />
        {{ end }}
        {{ if eq (path.Ext .Destination) ".png" }}
          <source type="image/png" srcset="{{ .Destination | safeURL }}" />
        {{ end }}
      {{ end }}
      <img src="{{ .Destination | safeURL }}" alt="{{ .PlainText }}" />
    </picture>
  </a>
</figure>
<a href="#_" class="lightbox" id="{{ .Destination | md5 }}-lightbox">
  <picture>
    {{ if not (hasPrefix .Destination  "http") }}
      {{ $avifPath:= replace .Destination (path.Ext .Destination) ".avif" }}
      {{ $avifPathStatic := printf "%s/static/%s" .Page.File.Dir $avifPath }}
      {{ if (fileExists
        $avifPathStatic)
      -}}
        <source srcset="{{ $avifPath | safeURL }}" type="image/avif" />
      {{- end }}
      {{ if eq (path.Ext .Destination) ".jpg" }}
        <source type="image/jpeg" srcset="{{ .Destination | safeURL }}" />
      {{ end }}
      {{ if eq (path.Ext .Destination) ".jpeg" }}
        <source type="image/jpeg" srcset="{{ .Destination | safeURL }}" />
      {{ end }}
      {{ if eq (path.Ext .Destination) ".png" }}
        <source type="image/png" srcset="{{ .Destination | safeURL }}" />
      {{ end }}
    {{ end }}
    <img src="{{ .Destination | safeURL }}" alt="{{ .PlainText }}" />
  </picture>
</a>