hugo-theme-hello-friend/layouts/shortcodes/imgproc.html

{{ $original := .Page.Resources.GetMatch (printf "*%s*" (.Get 0)) }}
{{ $command := .Get 1 }}
{{ $options := .Get 2 }}

{{ if eq $command "Fit"}}
  {{ .Scratch.Set "image" ($original.Fit $options) }}
{{ else if eq $command "Resize"}}
  {{ .Scratch.Set "image" ($original.Resize $options) }}
{{ else if eq $command "Fill"}}
  {{ .Scratch.Set "image" ($original.Fill $options) }}
{{ else }}
  {{ errorf "Invalid image processing command: Must be one of Fit, Fill or Resize."}}
{{ end }}

{{ $image := .Scratch.Get "image" }}

<figure class="{{ with .Get 3}}{{ . }}{{ else -}} left {{- end }}" >
	<img style="max-width: 100%; width: auto; height: auto; border-radius: 8px;" src="{{ $image.RelPermalink }}" width="{{ $image.Width }}" height="{{ $image.Height }}">
	{{ with .Inner }}
    <figcaption>
      {{ . }}
    </figcaption>
	{{ end }}
</figure>