{{- $params := dict
  "min" (default site.Params.imaging.min 200)
  "max" (default site.Params.imaging.max 1400)
  "count" (default site.Params.imaging.count 20)
-}}

{{- $original := . -}}
{{- $result := slice -}}
{{- $width := $original.Width -}}

{{- range $step := seq $params.count -}}
  {{- $width = div $width 2 -}}
  
  {{- if and (ge $width $params.min) (le $width $params.max) -}}
    {{- $image := $original.Resize (printf "%dx" $width) -}}
    {{- $result = $result | append (printf "%s %dw" (absURL $image.RelPermalink) $image.Width) -}}
  {{- end -}}
{{- end -}}

{{- return (cond (ge (len $result) 1) (printf "srcset=\"%s\"" (delimit $result ", ")) "") -}}