How can I customize excerpt settings?

You can adjust excerpt lengths and the ellipsis easily by adding the following code to the functions.php of your child theme and adapt it as you need:

function my_custom_excerpt_length( $length ) {return 20;

}

add_filter( 'excerpt_length', 'my_custom_excerpt_length', 999 );

function my_custom_excerpt_more($more) {return '...read more';

}

add_filter('excerpt_more', 'my_custom_excerpt_more');