seirdy.one/layouts/shortcodes/picture.html

{{ $light_svg := resources.GetMatch (printf "/p/%s.svg" (.Get "name")) -}}
{{ $light_png := resources.GetMatch (printf "/p/%s.png" (.Get "name")) -}}
{{ $light_webp := resources.GetMatch (printf "/p/%s.webp" (.Get "name")) -}}
{{ $light_avif := resources.GetMatch (printf "/p/%s.avif" (.Get "name")) -}}
{{ $light_jxl := resources.GetMatch (printf "/p/%s.jxl" (.Get "name")) -}}
{{ $dark_svg := resources.GetMatch (printf "/p/%s_dark.svg" (.Get "name")) -}}
{{ $dark_png := resources.GetMatch (printf "/p/%s_dark.png" (.Get "name")) -}}
{{ $dark_webp := resources.GetMatch (printf "/p/%s_dark.webp" (.Get "name")) -}}
{{ $dark_avif := resources.GetMatch (printf "/p/%s_dark.avif" (.Get "name")) -}}
{{ $dark_jxl := resources.GetMatch (printf "/p/%s_dark.jxl" (.Get "name")) -}}

{{- $img_width := $light_png.Width -}}
{{- $img_height := $light_png.Height -}}
{{- with (.Get "sf") -}}
	{{- $img_width = (mul $img_width . | math.Round) -}}
	{{- $img_height = (mul $img_height . | math.Round ) -}}
{{- end -}}
<picture>
	{{ with $dark_svg -}}
	{{ $dark_svg_src := . | resources.Fingerprint "md5" -}}
	<source
		srcset="{{ $dark_svg_src.RelPermalink }}"
		type="image/svg+xml"
		media="screen and (prefers-color-scheme: dark)" />
	{{ end -}}
	{{ with $dark_jxl -}}
	{{ $dark_jxl_src := . | resources.Fingerprint "md5" -}}
	<source
		srcset="{{ $dark_jxl_src.RelPermalink }}"
		type="image/jxl"
		media="screen and (prefers-color-scheme: dark)" />
	{{ end -}}
	{{ with $dark_avif -}}
	{{ $dark_avif_src := . | resources.Fingerprint "md5" -}}
	<source
		srcset="{{ $dark_avif_src.RelPermalink }}"
		type="image/avif"
		media="screen and (prefers-color-scheme: dark)" />
	{{ end -}}
	{{ with $dark_webp -}}
	{{ $dark_webp_src := . | resources.Fingerprint "md5" -}}
	<source
		srcset="{{ $dark_webp_src.RelPermalink }}"
		type="image/webp"
		media="screen and (prefers-color-scheme: dark)" />
	{{ end -}}
	{{ with $dark_png -}}
	{{ $dark_png_src := . | resources.Fingerprint "md5" -}}
	<source
		srcset="{{ $dark_png_src.RelPermalink }}"
		type="image/png"
		media="screen and (prefers-color-scheme: dark)" />
	{{ end -}}
	{{ with $light_svg -}}
	{{ $light_svg_src := . | resources.Fingerprint "md5" -}}
	<source
		srcset="{{ $light_svg_src.RelPermalink }}"
		type="image/svg+xml" />
	{{ end -}}
	{{ with $light_jxl -}}
	{{ $light_jxl_src := . | resources.Fingerprint "md5" -}}
	<source
		srcset="{{ $light_jxl_src.RelPermalink }}"
		type="image/jxl" />
	{{ end -}}
	{{ with $light_avif -}}
	{{ $light_avif_src := . | resources.Fingerprint "md5" -}}
	<source
		srcset="{{ $light_avif_src.RelPermalink }}"
		type="image/avif" />
	{{ end -}}
	{{ with $light_webp -}}
	{{ $light_webp_src := . | resources.Fingerprint "md5" -}}
	<source
		srcset="{{ $light_webp_src.RelPermalink }}"
		type="image/webp" />
	{{ end -}}
	{{ $light_png_src := $light_png | resources.Fingerprint "md5" -}}
	<source
		srcset="{{ $light_png_src.RelPermalink }}"
		type="image/png" />
	<img{{ with .Get "class" }} class="{{ . }}"{{ end }}
		width="{{ $img_width }}" height="{{ $img_height }}"
		src="{{ $light_png_src.Permalink }}" alt='{{ .Get "alt" }}'
		{{ with .Parent -}}
		{{ if eq .Name "transcribed-image-figure" -}}
		{{ with .Get "id" -}}
		aria-describedby="transcript-{{ . }}"
		{{ end -}}
		{{ end -}}
		{{ if or (eq .Name "image-figure") (eq .Name "transcribed-image-figure") -}}
		itemprop="image contentUrl"
		{{ end -}}
		{{- end -}}
		decoding="async" />
</picture>{{- /* Strip trailing newline: https://github.com/gohugoio/hugo/issues/1753 */ -}}