AMPERION_Webpage/themes/airspace-hugo/layouts/partials/head.html

<meta charset="utf-8">
<title>{{.Title | default site.Title}}</title>

<!-- base url -->
{{ if or (eq site.BaseURL "/") (eq site.BaseURL "http://localhost:1313/") (eq site.BaseURL "http://examplesite.org/") (eq site.BaseURL "https://examplesite.org/") (eq site.BaseURL "http://examplesite.com/") (eq site.BaseURL "https://examplesite.com/")}}{{else}}
<base href="{{ .Permalink }}">
{{ end }}

<!-- multilingual SEO optimizations -->
{{ if .IsTranslated }}
{{ range .AllTranslations }}
<link rel="alternate" hreflang="{{.Lang}}" href="{{ .RelPermalink | absLangURL }}">
{{ end }}
<link rel="alternate" hreflang="x-default" href="{{ .RelPermalink | absLangURL }}">
{{ end }}

<!-- mobile responsive meta -->
<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=5">
<meta name="description" content="{{ .Params.Description | default site.Params.description }}">
{{ with site.Params.author }}
<meta name="author" content="{{ . }}">{{ end }}
{{ hugo.Generator }}
  
<!-- theme meta -->
<meta name="theme-name" content="airspace-hugo" />

<!-- theme meta -->
<meta name="theme-name" content="airspace-hugo" />

<!-- google site verification -->
{{ with site.Params.site_verification.google }}
<meta name="google-site-verification" content="{{ . }}" />
{{ end }}

<!-- bing site verification -->
{{ with site.Params.site_verification.bing }}
<meta name="msvalidate.01" content="{{ . }}" />
{{ end }}

<!-- baidu site verification -->
{{ with site.Params.site_verification.baidu }}
<meta name="baidu-site-verification" content="{{ . }}" />
{{ end }}

<!-- favicon -->
{{ $favicon:= site.Params.favicon }}
{{ if $favicon }}
{{ if fileExists (add `assets/` $favicon) }}
{{ $favicon:= resources.Get $favicon }}
{{ $favicon_16:= $favicon.Resize "16x png"}}
{{ $favicon_32:= $favicon.Resize "32x png"}}
{{ $favicon_180:= $favicon.Resize "180x png"}}
<link rel="shortcut icon" href="{{$favicon_32.RelPermalink}}" type="image/x-icon">
<link rel="icon" href="{{$favicon_32.RelPermalink}}" type="image/x-icon">
<link rel="icon" type="image/png" sizes="16x16" href="{{$favicon_16.RelPermalink}}">
<link rel="icon" type="image/png" sizes="32x32" href="{{$favicon_32.RelPermalink}}">
<link rel="apple-touch-icon" sizes="180x180" href="{{$favicon_180.RelPermalink}}">
{{ end }}
{{ end }}
<link rel="manifest" href="{{`manifest.webmanifest` | relLangURL }}">
<meta name="msapplication-TileColor" content="{{site.Params.variables.color_primary | default `#da532c`}}">
<meta name="theme-color" content="{{site.Params.variables.body_color | default `#ffffff` }}">


<!-- Open Graph image and Twitter Card meta-data -->
{{ $image_path := .Params.image | default site.Params.image }}
{{ $image_path_local :=  printf "assets/%s" $image_path }}
{{ $image_ext := trim (path.Ext $image_path | lower) "." }}
{{ if fileExists $image_path_local }}
<meta property="og:image" content="{{ $image_path | absURL }}" />
<!-- If not SVG, read image aspect ratio and define Twitter Card and Open Graph width and height  -->
{{ if ne $image_ext "svg" }}
{{ with (imageConfig $image_path_local) }}
{{ if (and (gt .Width 144) (gt .Height 144)) }}
<meta name="twitter:image" content="{{ $image_path | absURL }}" />
<meta name="twitter:card"
  content="summary{{ if (and (gt .Width 300) (gt .Height 157) (not (eq .Width .Height))) }}_large_image{{ end }}">
{{ end }}
<meta property="og:image:width" content="{{ .Width }}">
<meta property="og:image:height" content="{{ .Height }}">
{{ end }}
{{ end }}
<meta property="og:image:type"
  content="image/{{ if eq $image_ext `svg` }}svg+xml{{ else }}{{ replaceRE `^jpg$` `jpeg` $image_ext }}{{ end }}">
{{ end }}
<meta name="twitter:title" content="{{ with .Title }}{{ . }}{{ else }}{{ site.Title }}{{ end }}" />
<meta name="twitter:description"
  content="{{ with .Description }}{{ . }}{{ else }}{{ if .IsPage }}{{ .Summary }}{{ else }}{{ with site.Params.description }}{{ . }}{{ end }}{{ end }}{{ end }}" />
{{ with Site.Params.Social.twitter }}
<meta name="twitter:site" content="@{{ . }}" />{{ end }}
{{ range Site.Params.Author }}
{{ with .twitter }}
<meta name="twitter:creator" content="@{{ . }}" />{{ end }}
{{ end }}

{{ template "_internal/opengraph.html" . }}

<!-- google analytics -->
{{ template "_internal/google_analytics.html" . }}

<!-- google tag manager -->
{{ with site.Params.google_tag_manager }}
<script>
  var dataLayer = window.dataLayer = window.dataLayer || [];
  dataLayer.push({
    page: '{{ .Title }}',
    categories: 'only examples about your dataLayer'
  });
</script>
<script>
  (function (w, d, s, l, i) {
    w[l] = w[l] || [];
    w[l].push({
      'gtm.start': new Date().getTime(),
      event: 'gtm.js'
    });
    var f = d.getElementsByTagName(s)[0],
      j = d.createElement(s),
      dl = l != 'dataLayer' ? '&l=' + l : '';
    j.async = true;
    j.src = 'https://www.googletagmanager.com/gtm.js?id=' + i + dl;
    f.parentNode.insertBefore(j, f);
  })(window, document, 'script', 'dataLayer', '{{ . }}');
</script>
{{ end }}

<!-- matomo analytics -->
{{ with site.Params.matomo }}
{{ if .enable }}
<script type="text/javascript">
  var _paq = window._paq = window._paq || [];
  _paq.push(['trackPageView']);
  _paq.push(['enableLinkTracking']);
  (function () {
    var u = "{{.url|safeURL}}";
    _paq.push(['setTrackerUrl', u + 'matomo.php']);
    _paq.push(['setSiteId', '{{.id}}']);
    var d = document,
      g = d.createElement('script'),
      s = d.getElementsByTagName('script')[0];
    g.type = 'text/javascript';
    g.async = true;
    g.src = u + 'matomo.js';
    s.parentNode.insertBefore(g, s);
  })();
</script>
{{ end }}
{{ end }}

<!--  Baidu analytics -->
{{ if site.Params.baidu.enable }}
{{ with site.Params.baidu.analytics_id }}
<script>
  var _hmt = _hmt || [];
  (function () {
    var hm = document.createElement("script");
    hm.src = "https://hm.baidu.com/hm.js?{{ . }}";
    var s = document.getElementsByTagName("script")[0];
    s.parentNode.insertBefore(hm, s);
  })();
</script>
{{ end }}
{{ end }}

<!-- Plausible Analytics -->
{{ with site.Params.plausible }}
{{ if .enable }}
{{ with .domain }}
<script defer data-domain="{{ . }}" src="https://plausible.io/js/plausible.js"></script>
{{ end }}
{{ end }}
{{ end }}

<!-- Counter Analytics -->
{{ with site.Params.counter }}
{{ if .enable }}
{{ with .id }}
<script src="https://cdn.counter.dev/script.js" data-id="{{ . }}" data-utcoffset="{{ site.Params.counter.utc_offset | default "0" }}"></script>
{{ end }}
{{ end }}
{{ end }}

<!-- Google reCaptcha -->
{{ if site.Params.contact.form.use_recaptcha }}
<script src="https://www.google.com/recaptcha/api.js?render={{ site.Params.recaptcha_site_key }}"></script>
<script>
  grecaptcha.ready(function() {
      grecaptcha.execute('{{ site.Params.recaptcha_site_key }}', {action: 'homepage'})
      .then(function(token) {
        document.getElementById('captchaResponse').value = token;
      });
    });
</script>
{{ end }}