Tips on Customizing NitroPack – Caching & Speed Optimization for Core Web Vitals, Defer CSS & JS, Lazy load Images and CDN

How to Hide NitroPack Admin Menus

function plt_hide_nitropack_menus() {
	//Hide the "NitroPack" menu.
	remove_menu_page('nitropack');
	//Hide the "NitroPack → Dashboard" menu.
	remove_submenu_page('nitropack', 'nitropack');
	//Hide the "NitroPack → System Report" menu.
	remove_submenu_page('nitropack', 'admin.php?page=nitropack&subpage=system-report');
}

add_action('admin_menu', 'plt_hide_nitropack_menus', 11);

Where do I put this code?

How to Hide the "NitroPack" Meta Box

function plt_hide_nitropack_metaboxes() {
	$screen = get_current_screen();
	if ( !$screen ) {
		return;
	}

	//Hide the "NitroPack" meta box.
	remove_meta_box('nitropack_manage_cache_box', $screen->id, 'side');
}

add_action('add_meta_boxes', 'plt_hide_nitropack_metaboxes', 20);