Kotaro Hosoda

<p>This WordPress plugin makes a link tile from Open Graph protocol.<br />
What you have to write is just a shortcode:</p>
<p>[khlt_linktile url=”URL”]</p>
<p>And there are some options.</p>
<ul>
<li>url : (mandatory) URL to link</li>
<li>bgcolor : (option, default: #fff) background-color of the link tile.</li>
<li>nocache : (option, default: false) set to true once if the linked page is changed.</li>
<li>desc : (option, default: fetch from OGP) set any text here if you want to override OGP’s description.</li>
</ul>
<p>OGP data from linked site is cached for a week. (You can change my PHP code)</p>


Open Graph link tile

This WordPress plugin makes a link tile from Open Graph protocol.

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>


OGP Generator

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

Open Graph link tile vs OGP Generator