hugo-theme-hello-friend/layouts/partials/head.html

<meta http-equiv="content-type" content="text/html; charset=utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0, maximum-scale=1">
<meta name="description" content="{{ if .IsHome }}{{ $.Site.Params.Subtitle }}{{ else }}{{ .Summary | plainify }}{{ end }}"/>
<meta name="keywords" content="{{ $.Site.Params.keywords }}"/>
<meta name="robots" content="noodp"/>
<link rel="canonical" href="{{ .Permalink }}" />

<!-- head custom -->
{{- partial "prepended_head.html" . }}

<!-- Theme CSS -->
<link rel="stylesheet" href="{{ "assets/style.css" | absURL }}">

<!-- Custom CSS to override theme properties (/static/style.css) -->
<link rel="stylesheet" href="{{ "style.css" | absURL }}">

<!-- Icons -->
<link rel="apple-touch-icon-precomposed" sizes="144x144" href="{{ "img/apple-touch-icon-144-precomposed.png" | absURL }}">
<link rel="shortcut icon" href="{{ "img/favicon.png" | absURL }}">

<!-- Twitter Card -->
{{ template "_internal/twitter_cards.html" . }}

<!-- OG data -->
{{ template "_internal/opengraph.html" . }}

<!-- RSS | JSON -->
{{ range .AlternativeOutputFormats -}}
    {{ printf `<link rel="%s" type="%s" href="%s" title="%s" />` .Rel .MediaType.Type .RelPermalink $.Site.Title | safeHTML }}
{{ end -}}

<!-- head custom -->
{{- partial "extended_head.html" . }}