How to Add a Read More link in WordPress Excerpts Content

To prevent duplicate content, improve site load time, and for better SEO many bloggers have started to use post excerpts. Excerpts are mini-descriptions of the posts shown on the main blog page, category pages, and archive pages.

First open your functions.php file, and paste the following code inside the php tags:

<?php // Changing excerpt more
   function new_excerpt_more($more) {
   global $post;
   return '… <a href="'. get_permalink($post->ID) . '">' . 'Read More »' . '';
   }
   add_filter('excerpt_more', 'new_excerpt_more');
?>

In this function, you are telling WordPress to remove the default more which looks like this: […], and replace it with a link