OverlappingElvis

If you’re sharing a link to a blog post on Facebook, having a thumbnail image makes for a much more effective share. If you have an image in the body of your post, Facebook will use that as the share image, but what if you don’t have any images in your post or want to specify an image you’re not using in the content? To solve this problem, I created a WordPress plugin that allows you to control which image shows when a link from your WordPress site is shared on Facebook.
<ul>
<li>Thanks to <a href="http://www.farinspace.com/wpalchemy-metabox/" rel="nofollow ugc">Dimas Begunoff</a> for the amazingly helpful <a href="http://www.farinspace.com/wpalchemy-metabox/" rel="nofollow ugc">WPAlchemy MetaBox PHP Class</a>.</li>
<li>I’m using the <code><link rel="image_src" href="…" /></code> approach. If you’re adding more Open Graph meta tags to your <code><head></code>, you’d probably want to use <code><meta property="og:image" content="…" /></code>, but in that case you probably also don’t need this plugin.</li>
<li>If you’re using any other plugins that add sharing info, Open Graph tags, or similar, this plugin will probably conflict with those.</li>
</ul>
For questions, comments, or bugs, you can reach me at <a href="http://twitter.com/Overlapping" rel="nofollow ugc">@Overlapping</a> or OverlappingElvis [at] gmail [dot] com.

Custom Image_Src

Specify a custom sharing image for Facebook. You can upload an image, use the first image in the post, or use the post thumbnail.

ryanve

Social media sites often use the image_src microformat for displaying link thumbnails. This simple plugin adds the image_src <a href="http://microformats.org/wiki/existing-rel-values" rel="nofollow ugc">rel value</a> to the code of your site. By default, the plugin applies only to singular views and it uses the <a href="https://codex.wordpress.org/Post_Thumbnails" rel="nofollow ugc">featured image</a>. It only applies when an image is available. The <code>'@image_src'</code> filter hook allows for image customization and/or extending the plugin to other views.

Custom Image_Src vs image_src