Exclude Category from Blog Page

//Hide categories from WordPress
function exclude_category( $query ) {
  if ( $query->is_home() && $query->is_main_query() ) {
        $query->set( 'cat', '-1, -2, -3' );
        }
  }
add_action( 'pre_get_posts', 'exclude_category' );



//Hide categories from WordPress category widget
function exclude_widget_categories($args){
    $exclude = "1,4,8,57,80";
    $args["exclude"] = $exclude;
    return $args;
}
add_filter("widget_categories_args","exclude_widget_categories");

 

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