Exclude Specific Categories from RSS Feed

/**

 * Exclude a category or multiple categories from the feeds.

 * If you want to exclude multiple categories, use a comma-separated list: "-15, -5, -6".

 * Make sure to prefix the category id(s) with a minus "-".

 *

 * @param WP_Query $query The query.

 */

function wpcode_snippets_exclude_feed_category( $query ) {

	if ( $query->is_feed ) {

		// Replace 15 with the desired category id you want to exclude.

		$query->set( 'cat', '-15' );

	}

}

add_action( 'pre_get_posts', 'wpcode_snippets_exclude_feed_category' );