What tags are used in the head element?

Question

HTML

I'm using bootstrap, what tags are usually used in the head element?

<meta charset="utf-8">
<meta http-equiv="x-dns-prefetch-control" content="on">
<link rel="dns-prefetch" href="http://xxx.ru">
<link rel="dns-prefetch" href="//www.google-analytics.com">
<title>xxx</title>
<meta name="description" content="xxx">
<meta name="keywords" content="">
<meta name="robots" content="index, follow">
<meta name="generator" content="xxx">
<meta property="og:site_name" content="xxx">
<meta property="og:url" content="http://xxx.ru/">
<meta property="og:title" content=xxxи">
<meta itemprop="url" content="http://xxx.ru/">
<meta itemprop="name" content="xxx">

+ что подключаем css, шрифты.

Or is there something else that I didn't consider above?

Answer 1

<meta name="viewport" content="width=device-width, initial-scale=1, maximum-scale=1, user-scalable=no">

you can also
set the "background" of the tab title