Biokat´s Archive - Zimmerlöwe - Alles Gute für die Katz'!

add_filter( 'menu_image_default_sizes', function($sizes){ // remove the default 36x36 size unset($sizes['menu-36x36']); // add a new size $sizes['menu-50x50'] = array(50,50); // return $sizes (required) return $sizes; });