Add meta tag description, page title and abstract programatically
In your theme's template.php file, you could add something like

/**
 * Implements hook_preprocess_html
 */
function THEME_NAME_preprocess_html(&amp;$vars) {

  if (current_path() == 'my/custom/path') {
    $description = array(        
      '#type' =&gt; 'html_tag',
      '#tag' =&gt; 'meta',
      '#attributes' =&gt; array(
        'name' =&gt; 'description',
        'content' =&gt; 'here all description goes',
      )
    );
    drupal_add_html_head($description, 'description');
  }

}


Clear cache to register new preprocess function.