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dynamically generate og:image
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3 changed files with 43 additions and 92 deletions
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assets/FiraMono-Regular.ttf
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assets/FiraMono-Regular.ttf
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assets/og_base.png
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assets/og_base.png
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@ -1,98 +1,49 @@
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{{- $summary := truncate 160 .Summary }}
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<meta property="og:title" content="{{ .Title }}" />
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{{- $s := .Site.Params }}
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<meta property="og:description" content="{{ with .Description }}{{ . }}{{ else }}{{if .IsPage}}{{ .Summary }}{{ else }}{{ with .Site.Params.description }}{{ . }}{{ end }}{{ end }}{{ end }}" />
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{{- $p := .Params }}
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<meta property="og:type" content="{{ if .IsPage }}article{{ else }}website{{ end }}" />
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<meta property="og:url" content="{{ .Permalink }}" />
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{{- $relpath := "" -}}
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{{- if or $s.usePageBundles $p.usePageBundles }}
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{{- $relpath = .Page.RelPermalink -}}
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{{- end }}
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{{ if eq $p.usePageBundles false }}
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{{- $relpath = "" }}
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{{ end }}
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{{- with $p.description }}
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{{- $summary = truncate 160 . }}
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{{- end }}
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{{- if .IsHome }}
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{{- $summary = $s.description }}
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{{- with $p.description }}
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{{- $summary = . }}
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{{- end }}
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{{- end }}
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{{- $site := .Site.Title }}
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{{- $title := .Title }}
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{{- $permalink := .Permalink }}
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{{- $logo := absURL $s.logo }}
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{{- $author := $s.author }}
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{{- with $p.author }}
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{{ $author := . }}
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{{- end }}
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{{- $image := absURL $s.fallBackOgImage }}
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{{- with $p.featureImage }}
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{{- $fullpath := ( add $relpath . ) -}}
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{{- $image = absURL $fullpath }}
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{{- end }}
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{{- with $p.thumbnail }}
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{{- $fullpath := ( add $relpath . ) -}}
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{{- $image = absURL $fullpath }}
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{{- end }}
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{{- with $p.shareImage }}
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{{- $fullpath := ( add $relpath . ) -}}
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{{- $image = absURL $fullpath }}
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{{- end }}
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<meta property="og:locale" content="{{ .Lang }}" />
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<meta property="og:locale" content="{{ .Lang }}" />
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{{- if .IsHome }}
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{{- if .IsHome }}
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<meta property="og:type" content="website">
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<meta property="og:type" content="website">
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<meta property="og:image" content="{{ .Site.Params.fallBackOgImage | absURL }}" />
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{{- else }}
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{{- else }}
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<meta property="og:type" content="article">
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<meta property="og:type" content="article">
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{{- end }}
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{{- end }}
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<meta name="description" content="{{ $summary }}" />
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<meta property="og:url" content="{{ $permalink }}" />
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{{- if .IsPage }}
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<meta property="og:title" content="{{ $title }}" />
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{{- $iso8601 := "2006-01-02T15:04:05-07:00" -}}
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<meta property="og:description" content="{{ $summary }}" />
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<meta property="article:section" content="{{ .Section }}" />
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<meta property="og:image" content="{{ $image }}" />
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{{ with .PublishDate }}<meta property="article:published_time" {{ .Format $iso8601 | printf "content=%q" | safeHTMLAttr }} />{{ end }}
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{{- $keywords := "" }}
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{{ with .Lastmod }}<meta property="article:modified_time" {{ .Format $iso8601 | printf "content=%q" | safeHTMLAttr }} />{{ end }}
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{{- with $s.keywords }}
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{{- end -}}
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{{- $keywords = delimit $s.keywords "," }}
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{{- end }}
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{{- with .Params.audio }}<meta property="og:audio" content="{{ . }}" />{{ end }}
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{{- with $p.keywords }}
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{{- with .Params.locale }}<meta property="og:locale" content="{{ . }}" />{{ end }}
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{{- $keywords = delimit . "," }}
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{{- with .Site.Params.title }}<meta property="og:site_name" content="{{ . }}" />{{ end }}
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{{- end }}
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{{- with .Params.videos }}{{- range . }}
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{{- with $keywords }}
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<meta property="og:video" content="{{ . | absURL }}" />
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<meta name="keywords" content="{{ $keywords }}" />
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{{ end }}{{ end }}
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{{- end }}
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{{- if eq .Section $s.blogDir -}}
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{{- if .IsPage -}}
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{{- $date := ( .Date.Format "2006-02-01") -}}
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{{/* Generate opengraph image, based on https://aarol.dev/posts/hugo-og-image/ */}}
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{{- $date := (time .Date) }}
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{{ $base := resources.Get "og_base.png" }}
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{{- $lastMod := (time .Lastmod) }}
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{{ $font := resources.Get "/FiraMono-Regular.ttf"}}
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<script type="application/ld+json">
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{{ $img := $base.Filter (images.Text .Page.Title (dict
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{
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"color" "#d8d8d8"
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"@context": "http://schema.org",
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"size" 64
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"@type": "BlogPosting",
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"linespacing" 2
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"mainEntityOfPage":"{{ $permalink }}",
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"x" 40
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"name": "{{ $site }}",
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"y" 240
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"headline": {{ $title }},
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"font" $font
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"description": {{ $summary }},
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))}}
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"url": "{{ $permalink }}",
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{{ $img = resources.Copy (path.Join .Page.RelPermalink "og.png") $img }}
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"datePublished": {{ $date }},
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<meta property="og:image" content="{{$img.Permalink}}">
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"dateModified": {{ $lastMod }},
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<meta property="og:image:width" content="{{$img.Width}}" />
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"author": {
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<meta property="og:image:height" content="{{$img.Height}}" />
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"@type": "Person",
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"name": "{{ $author }}"
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<!-- Twitter metadata (used by other websites as well) -->
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},
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<meta name="twitter:card" content="summary_large_image" />
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"image":{
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<meta name="twitter:title" content="{{ .Title }}" />
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"@type":"ImageObject",
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<meta name="twitter:description" content="{{ with .Description }}{{ . }}{{ else }}{{if .IsPage}}{{ .Summary }}{{ else }}{{ with .Site.Params.description }}{{ . }}{{ end }}{{ end }}{{ end -}}"/>
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"url": "{{ $image }}"
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<meta name="twitter:image" content="{{$img.Permalink}}" />
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},
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{{- end -}}
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"publisher": {
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"@type": "Organization",
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"logo": {
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"@type":"ImageObject",
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"url": "{{ $logo }}"
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},
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"name": "{{ $site }}"
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}
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}
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</script>
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{{- end }}
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