<!-- In HTML SEO tag looks like this:-->
<title>Your wesite title</title>
<meta name="description" content="Sort description of your website">
<meta name="keywords" content="keyword1,keyword2,...">
<meta name="og:title" property="og:title" content="Your Open Graph Title">
<meta name="robots" content="index, follow">
<link href="URL" rel="canonical">