You should use Open Graph protocol. You can simply add this snippet to your page <head>:
<meta property="og:type" content="website">
<meta property="og:site_name" content="Название сайта">
<meta property="og:title" content="Заголовок">
<meta property="og:description" content="Описание.">
<meta property="og:url" content="http://example.com/page.html">
<meta property="og:locale" content="ru_RU">
<meta property="og:image" content="http://example.com/img.jpg">
<meta property="og:image:width" content="968">
<meta property="og:image:height" content="504">
<meta name="twitter:card" content="summary_large_image">
<meta name="twitter:title" content="Заголовок">
<meta name="twitter:description" content="Описание.">
<meta name="twitter:image:src" content="http://example.com/img.jpg">
<meta name="twitter:url" content="http://example.com/page.html">
<meta name="twitter:domain" content="example.com">
<meta name="twitter:site" content="@">
<meta name="twitter:creator" content="@...">
Image size should be 968x504px. Read more here
Cheers!
与恶龙缠斗过久,自身亦成为恶龙；凝视深渊过久,深渊将回以凝视…
