While most modern feed readers include social sharing capabilities, in this article, we will show you how to add social buttons in WordPress RSS feed.

First thing you need to do is download the social buttons you would want to display in your feeds. There are several social media icon sets available for free. Choose one that best suits your needs. After that you need to go to Media » Add New and upload Facebook and Twitter icons to your media library.

Once you have uploaded the icons, you need to copy their location URL. Simply go to Media » Library and click on the Edit link below Twitter icon.

On the Edit Media page, copy the File URL and paste it in a text editor. Repeat the process for the Twitter icon as well. We will need these URLs later.

We will use the default WordPress content filter to add these icons below each post in your WordPress RSS feed.

You need to add this code in your theme’s functions.php file or a site-specific plugin.

// add custom feed content
function wpb_add_feed_content($content) {

// Check if a feed is requested
if(is_feed()) {

// Encoding post link for sharing
$permalink_encoded = urlencode(get_permalink());

// Getting post title for the tweet
$post_title = get_the_title(); 

// Content you want to display below each post
// This is where we will add our icons

$content .= '<p>
<a href="http://www.facebook.com/sharer/sharer.php?u=' . $permalink_encoded . '" title="Share on Facebook"><img src="Facebook icon file url goes here" title="Share on Facebook" alt="Share on Facebook" width="64px" height="64px" /></a>

<a href="http://www.twitter.com/share?&text='. $post_title . '&amp;url=' . $permalink_encoded . '" title="Share on Twitter"><img src="Facebook icon file url goes here" title="Share on Twitter" alt="Share on Twitter" width="64px" height="64px" /></a>
</p>';
}

return $content;
}

add_filter('the_excerpt_rss', 'wpb_add_feed_content');
add_filter('the_content', 'wpb_add_feed_content');

This code simply adds HTML to display social icons below post content in your WordPress RSS feeds.