Function for widget titles
You can modify your filter function to add the condition: function html_widget_title( $title ) { if ( ” != $title ) { $output=”<img src=”https://wordpress.stackexchange.com/images/title_”.$title.’.png” alt=”‘.$title.'” title=”‘.$title.'”/>’; return $output; } else { return $title; } } add_filter( ‘widget_title’, ‘html_widget_title’ );