extension PassphraseURL on String {
  String phraseToURL() {
    var words = split(' ');

    for (var i = 0; i < words.length; i++) {
      words[i] = words[i].capitalize();
    }

    return words.join();
  }

  String capitalize() {
    return "${this[0].toUpperCase()}${substring(1).toLowerCase()}";
  }
}