<!-- 페이스북 -->
<meta property="og:title" content="제목"/>
<meta property="og:site_name" content="사이트명"/>
<meta property="og:type" content="분류 (website,article,place,product,event ...)"/>
<meta property="og:url" content="주소"/>
<meta property="og:image" content="썸네일 (200x200.jpg)"/>
<meta property="og:description" content="요약글"/>
<!-- 트위터 -->
<meta name="twitter:card" content="분류 (summary, photo, gallery ...)">
<meta name="twitter:title" content="제목">
<meta name="twitter:site" content="사이트명">
<meta name="twitter:creator" content="작성자명">
<meta name="twitter:image" content="썸네일">
<meta name="twitter:description" content="포스트 내용">
<!-- Google -->
<meta itemprop="name" content="제목">
<meta itemprop="description" content="설명">
<meta itemprop="image" content="이미지">