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Wordpress: Show Featured Images In Feed

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To encourage subscribers to visit your website, rather than letting them just consume content through your RSS feed, you might want to display only the excerpt and featured image of posts.

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Copy this code and paste it in your HTML 
  1. /** ******** ******** ******** ******** ******** ******** ******** ******** 
  2. * Title:        Show Featured Images In Feed
  3. * Description:  Same as above
  4. * http://www.smashingmagazine.com/2011/12/07/10-tips-optimize-wordpress-theme/
  5. * 
  6. * 
  7. */
  8.  
  9. function rss_post_thumbnail($content) {
  10.   global $post;
  11.   if( has_post_thumbnail($post->ID) )
  12.     $content = '<p>' . get_the_post_thumbnail($post->ID, 'thumbnail') . '</p>' . $content;
  13.   return $content;
  14. }
  15. add_filter('the_content_feed', 'rss_post_thumbnail');

URL: http://www.smashingmagazine.com/2011/12/07/10-tips-optimize-wordpress-theme/

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