Get the HTML content of a block edit page or post in WordPress

I’ve been searching for this for way too long, but this is the way to get the HTML output of a page in WordPress.

		$id             = 10;
		$page           = get_post( $id );
		$parsed_content = parse_blocks( $page->post_content );

		$output = '';

		foreach ( $parsed_content as $content ) {
			$output .= render_block( $content );
		}

                echo $output;