The meta tag describes meta data within an HTML document. It explains additional material about the HTML.

<meta charset="utf-8">
<!-- title -->
<title>···</title>
<meta property="og:title" content="···">
<meta name="twitter:title" content="···">

<!-- url -->
<link rel="canonical" href="https://···">
<meta property="og:url" content="https://···">
<meta name="twitter:url" content="https://···">

<!-- description -->
<meta name="description" content="···">
<meta property="og:description" content="···">
<meta name="twitter:description" content="···">

<!-- image -->
<meta property="og:image" content="https://···">
<meta name="twitter:image" content="https://···">

<!-- ua -->
<meta http-equiv="X-UA-Compatible" content="IE=edge,chrome=1">

<!-- viewport -->
<meta name="viewport" content="width=device-width">
<meta name="viewport" content="width=1024">
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