PaperModX/layouts/_default/_markup/render-image.html

{{- $img := .Page.Resources.GetMatch .Destination -}}
{{- if and (not $img) .Page.File -}}
  {{ $path := path.Join .Page.File.Dir .Destination }}
  {{- $img = resources.Get $path -}}
{{- end -}}

{{- if $img -}}
  <img loading="lazy" src="{{ $img.RelPermalink }}" alt="{{ $.Text }}" {{ with $.Title}} title="{{ . }}" {{ end }} />
{{- else -}}
  {{- warnf "No image found for %s from %s" .Destination .Page.File }}
{{- end -}}