opengraph.html

<meta property="og:title" content="{{ .Title }}" />
<meta property="og:description" content="{{ with .Description }}{{ . }}{{ else }}{{ with .Site.Params.description }}{{ . }}{{ end }}{{ end }}" />
<meta property="og:type" content="{{ if .IsPage }}article{{ else }}website{{ end }}" />
<meta property="og:url" content="{{ .Permalink }}" />
{{- $images := $.Resources.ByType "image" -}}
{{- $card := $images.GetMatch "card*" -}}
{{ with $card }}
<meta property="og:image" content="{{ .Permalink }}"/>
{{ else }}
<meta property="og:image" content="{{ $.Site.Params.ogURL }}/api/og?{{ (querify "title" .Title "subtitle" (.Params.subtitle | default "") "description" (.Description | default "") "color" ($.Scratch.Get "color") )}} "/>
{{ end }}

{{- if .IsPage }}
{{- if not .PublishDate.IsZero }}<meta property="article:published_time" content="{{ .PublishDate.Format "2006-01-02T15:04:05-07:00" | safeHTMLAttr }}"/>
{{ else if not .Date.IsZero }}<meta property="article:published_time" content="{{ .Date.Format "2006-01-02T15:04:05-07:00" | safeHTMLAttr }}"/>
{{ end }}
{{- if not .Lastmod.IsZero }}<meta property="article:modified_time" content="{{ .Lastmod.Format "2006-01-02T15:04:05-07:00" | safeHTMLAttr }}"/>{{ end }}
{{- else }}
{{- if not .Date.IsZero }}<meta property="og:updated_time" content="{{ .Date.Format "2006-01-02T15:04:05-07:00" | safeHTMLAttr }}"/>
{{- end }}
{{- end }}{{/* .IsPage */}}

{{- with .Params.audio }}<meta property="og:audio" content="{{ . }}" />{{ end }}
{{- with .Params.locale }}<meta property="og:locale" content="{{ . }}" />{{ end }}
{{- with .Site.Params.title }}<meta property="og:site_name" content="{{ . }}" />{{ end }}
{{- with .Params.videos }}
{{- range . }}
<meta property="og:video" content="{{ . | absURL }}" />
{{ end }}{{ end }}
{{- if .Params.price }}
<meta property="product:price:amount" content="{{ .Params.price }}" />
<meta property="product:price:currency" content="{{ .Params.currency }}" />
{{ end }}

{{- /* If it is part of a series, link to related articles */}}
{{- $permalink := .Permalink }}
{{- $siteSeries := .Site.Taxonomies.series }}{{ with .Params.series }}
{{- range $name := . }}
  {{- $series := index $siteSeries $name }}
  {{- range $page := first 6 $series.Pages }}
    {{- if ne $page.Permalink $permalink }}<meta property="og:see_also" content="{{ $page.Permalink }}" />{{ end }}
  {{- end }}
{{ end }}{{ end }}

{{- if .IsPage }}
{{- range .Site.Params.Authors }}{{ with .Social.facebook }}
<meta property="article:author" content="https://www.facebook.com/{{ . }}" />{{ end }}{{ with .Site.Params.Social.facebook }}
<meta property="article:publisher" content="https://www.facebook.com/{{ . }}" />{{ end }}
<meta property="article:section" content="{{ .Section }}" />
{{- with .Params.tags }}{{ range first 6 . }}
<meta property="article:tag" content="{{ . }}" />{{ end }}{{ end }}
{{- end }}{{ end }}

{{- /* Facebook Page Admin ID for Domain Insights */}}
{{- with .Site.Params.Social.facebook_admin }}<meta property="fb:admins" content="{{ . }}" />{{ end }}