hugo-PaperMod/layouts/partials/head.html

<meta charset="utf-8">
<meta http-equiv="X-UA-Compatible" content="IE=edge">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
{{- if hugo.IsProduction | or (eq .Site.Params.env "production") }}
<meta name="robots" content="index, follow">
{{- else }}
<meta name="robots" content="noindex, nofollow">
{{- end }}

{{- /* Title */}}
<title>{{ if .IsHome }}{{ else }}{{ if .Title }}{{ .Title }} | {{ end }}{{ end }}{{ .Site.Title }}</title>

{{- /* Meta */}}
{{- if .IsHome }}
{{ with .Site.Params.keywords -}}<meta name="keywords" content="{{- range $i, $e := . }}{{ if $i }}, {{ end }}{{ $e }}{{ end }}" />{{ end }}
{{- else }}
<meta name="keywords" content="{{ if .Params.keywords -}}
    {{- range $i, $e := .Params.keywords }}{{ if $i }}, {{ end }}{{ $e }}{{ end }} {{- else }}
    {{- range $i, $e := .Params.tags }}{{ if $i }}, {{ end }}{{ $e }}{{ end }} {{- end -}}" />
{{- end }}
<meta name="description" content="{{- with .Description }}{{ . }}{{- else }}{{- if or .IsPage .IsSection}}
    {{- .Summary | default (printf "%s - %s" .Title  .Site.Title) }}{{- else }}
    {{- with .Site.Params.description }}{{ . }}{{- end }}{{- end }}{{- end -}}">
<meta name="author" content="{{ (partial "author.html" . ) }}">
<link rel="canonical" href="{{ if .Params.canonicalURL -}} {{ trim .Params.canonicalURL " " }} {{- else -}} {{ .Permalink }} {{- end }}" />
{{- if .Site.Params.analytics.google.SiteVerificationTag }}
<meta name="google-site-verification" content="{{ .Site.Params.analytics.google.SiteVerificationTag }}" />
{{- end }}
{{- if .Site.Params.analytics.yandex.SiteVerificationTag }}
<meta name="yandex-verification" content="{{ .Site.Params.analytics.yandex.SiteVerificationTag }}" />
{{- end }}
{{- if .Site.Params.analytics.bing.SiteVerificationTag }}
<meta name="msvalidate.01" content="{{ .Site.Params.analytics.bing.SiteVerificationTag }}" />
{{- end }}

{{- /* Styles */}}
{{- $theme_vars := (resources.Get "css/core/theme-vars.css") }}
{{- $reset := (resources.Get "css/core/reset.css") }}
{{- $media := (resources.Get "css/core/zmedia.css") }}
{{- $common := (resources.Match "css/common/*.css") | resources.Concat "assets/css/common.css" }}

{{- /* include `an-old-hope` if hljs is on */}}
{{- $isHLJSdisabled := (.Site.Params.assets.disableHLJS | default false) }}
{{- $hljs := (cond ($isHLJSdisabled) (" " | resources.FromString "assets/css/hljs-blank.css") (resources.Get "css/hljs/an-old-hope.min.css")) }}

{{- /* order is important */}}
{{- $core := (slice $theme_vars $reset $common $hljs $media) | resources.Concat "assets/css/core.css" }}
{{- $extended := (resources.Match "css/extended/*.css") | resources.Concat "assets/css/extended.css" }}

{{- /* bundle all required css */}}
{{- /* Add extended css after theme style */ -}}
{{- $stylesheet := (slice $core $extended) | resources.Concat "assets/css/stylesheet.css" | minify }}

{{- if not .Site.Params.assets.disableFingerprinting }}
{{- $stylesheet := $stylesheet | fingerprint }}
<link crossorigin="anonymous" href="{{ $stylesheet.RelPermalink }}" integrity="{{ $stylesheet.Data.Integrity }}" rel="preload stylesheet" as="style">
{{- else }}
<link crossorigin="anonymous" href="{{ $stylesheet.RelPermalink }}" rel="preload stylesheet" as="style">
{{- end }}

{{- with .Site.Params.profileMode }}
{{- if and .enabled .imageUrl $.IsHome }}
<link rel="preload" href="{{ .imageUrl }}" as="image">
{{- end }}
{{- end }}

{{- with .Site.Params.label.icon }}
<link rel="preload" href="{{ . }}" as="image">
{{- end }}

{{- /* Search */}}
{{- if (eq .Layout `search`) -}}
<link crossorigin="anonymous" rel="preload" as="fetch" href="../index.json">
{{- $fastsearch := resources.Get "js/fastsearch.js" | js.Build (dict "params" (dict "fuseOpts" .Site.Params.fuseOpts)) }}
{{- $fusejs := resources.Get "js/fuse.js" }}
{{- if not .Site.Params.assets.disableFingerprinting }}
{{- $search := (slice $fusejs $fastsearch ) | resources.Concat "assets/js/search.js" | minify | fingerprint }}
<script defer crossorigin="anonymous" src="{{ $search.RelPermalink }}" integrity="{{ $search.Data.Integrity }}"></script>
{{- else }}
{{- $search := (slice $fusejs $fastsearch ) | resources.Concat "assets/js/search.js" | minify }}
<script defer crossorigin="anonymous" src="{{ $search.RelPermalink }}"></script>
{{- end }}
{{- end -}}

{{- /* Highlight.js */}}
{{- $isHLJSdisabled := (.Site.Params.assets.disableHLJS | default .Params.disableHLJS ) }}
{{- if (and (eq .Kind "page") (ne .Layout "archives") (ne .Layout "search") (not $isHLJSdisabled)) }}
{{- if not .Site.Params.assets.disableFingerprinting }}
{{- $highlight := slice (resources.Get "js/highlight.min.js") | resources.Concat "assets/js/highlight.js" | minify | fingerprint }}
<script defer crossorigin="anonymous" src="{{ $highlight.RelPermalink }}" integrity="{{ $highlight.Data.Integrity }}"
    onload="hljs.initHighlightingOnLoad();"></script>
{{- else }}
{{- $highlight := slice (resources.Get "js/highlight.min.js") | resources.Concat "assets/js/highlight.js" | minify }}
<script defer crossorigin="anonymous" src="{{ $highlight.RelPermalink }}" onload="hljs.initHighlightingOnLoad();"></script>
{{- end }}
{{- end }}

{{- /* Favicons */}}
<link rel="icon" href="{{ .Site.Params.assets.favicon | default "favicon.ico" | absURL }}">
<link rel="icon" type="image/png" sizes="16x16" href="{{ .Site.Params.assets.favicon16x16 | default "favicon-16x16.png" | absURL }}">
<link rel="icon" type="image/png" sizes="32x32" href="{{ .Site.Params.assets.favicon32x32 | default "favicon-32x32.png" | absURL }}">
<link rel="apple-touch-icon" href="{{ .Site.Params.assets.apple_touch_icon | default "apple-touch-icon.png" | absURL }}">
<link rel="mask-icon" href="{{ .Site.Params.assets.safari_pinned_tab | default "safari-pinned-tab.svg" | absURL }}">
<meta name="theme-color" content="#2e2e33">
<meta name="msapplication-TileColor" content="#2e2e33">

{{- /* Generator */}}
{{ hugo.Generator }}

{{- /* RSS */}}
{{ range .AlternativeOutputFormats -}}
<link rel="{{ .Rel }}" type="{{ .MediaType.Type | html }}" href="{{ .Permalink | safeURL }}">
{{ end -}}
{{- range .AllTranslations -}}
<link rel="alternate" hreflang="{{ .Lang }}" href="{{ .Permalink }}" />
{{ end }}
{{- partial "extend_head.html" . -}}

{{- /* Misc */}}
{{- if hugo.IsProduction | or (eq .Site.Params.env "production") }}
{{- template "_internal/google_analytics.html" . }}
{{- template "_internal/google_news.html" . }}
{{- template "partials/templates/opengraph.html" . }}
{{- template "partials/templates/twitter_cards.html" . }}
{{- template "partials/templates/schema_json.html" . }}
{{- end -}}