Assure WordPress passes correct image to Facebook

If you have a WordPress blog and want to be sure that when people share a post on facebook (either through AddThis or directly through Facebook), the right image is grabbed, you can add a meta tag to your theme that will assure it happens.

1. Install the plugin get-the-image

2. Create a default image for your blog and call it blog_icon.png. Upload it to your theme’s images/ directory.

2. Add this code to your theme’s <head>:

<?php
'$defaultimg = get_bloginfo('stylesheet_directory').'/images/blog_icon.jpg';
$img = get_the_image(array(
	'post_id'=>$post->ID,
	'format'=>'array',
	'default_size'=>'thumbnail',
	'default_image'=>$defaultimg
)); ?>
<link rel="image_src" href="<?php if (is_single()) echo $img['url']; else echo $defaultimg ?>" / >

Learn more about the meta tags Facebook looks for on the Facebook Developers Wiki.

posted Apr 13 2010