title: Include image when sharing a link on WhatsApp
body: <p>This has been asked and answered a few times already
  <a href="https://stackoverflow.com/questions/19778620/provide-an-image-for-whatsapp-link-sharing">Provide an image for WhatsApp link sharing</a></p>
  
  <p>and I also found this link <a href="http://tekinfotree.blogspot.com.es/2016/06/how-to-display-thumbnail-preview-link.html" rel="nofollow noreferrer">http://tekinfotree.blogspot.com.es/2016/06/how-to-display-thumbnail-preview-link.html</a>
  saying "The meta tag property og:image is enough for getting a thumbnail."</p>
  
  <p>On the page, we already have the og:image but still, the image doesn't appear when sending the article via WhatsApp.
  Any clue what could be the reason?</p>
  
  <p>The metas are in the <code>head</code> tag of the page.</p>
  
  <pre><code>&lt;meta property="og:image" content="http://picture-url.jpg"/&gt;
  &lt;meta property="og:url" content="https://article-url.html"/&gt;
  &lt;meta property="og:title" content="ARTICLE_TITLE"/&gt;
  &lt;meta property="og:description" content="PARTICLE_DESCRIPTION" /&gt;
  &lt;meta property="og:locale" content="es_ES"/&gt;
  &lt;meta property="og:site_name" content=""/&gt;
  </code></pre>
  
  <p>Thanks!</p>