When shared on Facebook, this plugin shows a nice Thumbnail of your posts, pages and site.

ShinichiN

<p>When shared on Facebook, this plugin shows a nice Thumbnail of your posts, pages and site.</p>
<h3>Example of Open Graph Protocol tags</h3>
<pre><code><meta property="fb:app_id"      content="you can specify in admin" />
<meta property="og:title"       content="Post Title" />
<meta property="og:type"        content="article" />
<meta property="og:url"         content="Post URL" />
<meta property="og:image"       content="Post thumbnail, attached image, the first image or default image which you upload" />
<meta property="og:site_name"   content="Site Title" />
<meta property="og:locale"      content="Your Locale" />
<meta property="og:description" content="Post excerpt or text generated from your content" />
</code></pre>
<h3>Rules of the og:image</h3>
<h4>When a post permalink is shared (is_singular).</h4>
<ol>
<li>If your post has a post-thumbnail, that will show up.</li>
<li>If not, this plugin shows the images attatched to the post.</li>
<li>If not, this plugin shows the images which is in the content.</li>
<li>If not, this plugin shows the default image, which you upload in Settings > Reading > OGP Settings.</li>
<li>If not, this plugin doesn’t show anything. (Other ogp tags such as og:title, og:url and so on will be served.)</li>
</ol>
<h4>When the link posted on facebook was not a post link (!is_singular).</h4>
<p>When home page, archive pages, search result page or what ever else pages are shared on facebook, og:image will be the image you specify in Settings > Reading > OGP Settings.</p>


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