themes/docsy/layouts/partials/head.html

<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<!-- To handle CSP policy -->
<meta http-equiv="Content-Security-Policy"
      content="script-src 'self'; script-src-elem 'self' https://code.jquery.com https://cdn.jsdelivr.net https://fonts.googleapis.com;">
{{ hugo.Generator }}
{{ range .AlternativeOutputFormats -}}
<link rel="{{ .Rel }}" type="{{ .MediaType.Type }}" href="{{ .Permalink | safeURL }}">
{{ end -}}

{{ $outputFormat := partial "outputformat.html" . -}}
{{ if and hugo.IsProduction (ne $outputFormat "print") -}}
<meta name="robots" content="index, follow">
{{ else -}}
<meta name="robots" content="noindex, nofollow">
{{ end -}}

{{ partialCached "favicons.html" . }}
<title>
  {{- if .IsHome -}}
    {{ .Site.Title -}}
  {{ else -}}
    {{ with .Title }}{{ . }} | {{ end -}}
    {{ .Site.Title -}}
  {{ end -}}
</title>
{{ $desc := .Page.Description | default (.Page.Content | safeHTML | truncate 150) -}}
<meta name="description" content="{{ $desc }}">
{{ template "_internal/opengraph.html" . -}}
{{ template "_internal/schema.html" . -}}
{{ template "_internal/twitter_cards.html" . -}}
{{ partialCached "head-css.html" . "asdf" -}}
<script src='{{ "/js/jquery.min.js" | relURL }}'></script>
{{ if .Site.Params.offlineSearch -}}
<script src='{{ "/js/lunr.min.js" | relURL }}'></script>
{{ end -}}

{{ if .Site.Params.prism_syntax_highlighting -}}
<link rel="stylesheet" href='{{ "/css/prism.css" | relURL }}'/>
{{ end -}}

{{ partial "hooks/head-end.html" . -}}

{{/* To comply with GDPR, cookie consent scripts places in head-end must execute before Google Analytics is enabled */ -}}
{{ if hugo.IsProduction -}}
  {{ if hasPrefix .Site.GoogleAnalytics "G-" -}}
    {{ template "_internal/google_analytics.html" . -}}
  {{ else -}}
    {{ template "_internal/google_analytics_async.html" . -}}
  {{ end -}}
{{ end -}}