  <title>{{ if and .Title (ne (trim (lower .Site.Title) "") (trim (lower .Title) "")) }}{{ .Title }} | {{ end }}{{ .Site.Title }}</title>
  <meta charset='utf-8'>
  {{ hugo.Generator }}
  {{- with .Site.Params.ga_verify }}
  <meta name="google-site-verification" content="{{ . }}" />
  {{- end }}
  <meta name = 'viewport' content = 'width=device-width, initial-scale=1.0, maximum-scale=1.0, user-scalable=no'>
  <meta http-equiv = 'X-UA-Compatible' content = 'IE=edge'>
  {{- if (ne hugo.Environment "development") }}
  {{- partial "analytics.html" . }}
  {{- end }}
  {{- partial "opengraph.html" . }}
  {{- partial "favicon.html" . }}
  <link rel='canonical' href='{{ .Permalink }}'>
<!-- author & description & keywords  -->
<meta name="author" content="{{ .Site.Params.author | safeHTML }}" />

{{- if .Description -}}
  <meta name="description" content="{{ .Description | safeHTML }}" />
{{ else if .IsPage }}
  <meta name="description" content="{{ .Summary | plainify }}" />
{{ else if .Site.Params.description }}
  <meta name="description" content="{{ .Site.Params.description | safeHTML }}" />
{{- end -}}

{{- if .Keywords -}}
  {{ $length := len .Keywords | add -1 -}}
  <meta name="keywords" content="{{ range $index, $element := .Keywords }}{{ $element | safeHTML }}{{if ne $index $length }}, {{ end }}{{ end }}" />
{{ else if .Site.Params.keywords }}
  {{ $length := len .Site.Params.keywords | add -1 -}}
  <meta name="keywords" content="{{ range $index, $element := .Site.Params.keywords }}{{ $element | safeHTML }}{{if ne $index $length }}, {{ end }}{{ end }}" />
{{- end }}