Since in a month the developer of this plug-in hasn’t solved this issue (or couldn’t or was not interested in) I found a solution in a different place. Follow the simple procedure explained below:
1 – Find the file socialize-services.php located in the following path: socialize/frontend/
2 – Download the file and open it with the notepad or something similar (you can also modify the file directly in the remote location using for example the code editor of the cPanel). If you choose to download the file, remember to upload it again in the same location after making the modifications explained in point 3.
3 – Find the line 424 and replace the original code <pre>$large_image_url = wp_get_attachment_image_src(get_post_thumbnail_id($post->ID));</pre> with the following one:
<pre>$large_image_url = wp_get_attachment_image_src(get_post_thumbnail_id($post->ID), 'large');</pre>
Problem solved. Now the image pinned with Socialize plugin is shared at the highest resolution available.
Enjoy and thank you for reading.
PS: Socialize plugin author, wakeup! You made a great plugin but you need to support the users who believe in your skills and in your product ??
