<head>
    <meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no"/>
    {{- $defaultTitle := ( printf "%s - %s" .Site.Title .Site.Params.longTitle ) }}
    {{- $title := .Title | default $defaultTitle }}
    {{- $description := .Page.Description }}
    {{- $keywords := .Page.Keywords }}
    {{- $author := index $.Site.Data.authors (.Page.Params.Author | default .Site.Params.author) }}
    {{- if .IsHome }}
        {{ $title = $defaultTitle }}
        {{ $description = .Site.Params.description }}
        {{ $keywords = .Site.Params.keywords }}
    {{- end }}
    {{- with $description }}
    <meta name="description" content="{{ . }}">
    {{- end }}
    {{- with $keywords }}
    <meta name="keywords" content="{{ delimit . "," }}">
    {{- end }}
    {{- with $author }}
    <meta name="author" content="{{ $author.name }}">
    {{- end }}
    <title>{{ $title }}</title>
    <link rel="shortcut icon" href="/favicon.ico">
    <link rel="icon" type="image/png" href="/favicon.png" sizes="32x32">
    <link rel="icon" type="image/png" href="/favicon.png" sizes="96x96">
    <link rel="apple-touch-icon" sizes="180x180" href="/apple-touch-icon.png">
    {{- range .AlternativeOutputFormats -}}
        {{ printf `<link rel="%s" type="%s" href="%s" title="%s" />` .Rel .MediaType.Type .Permalink $.Site.Title | safeHTML }}
    {{- end }}
</head>
