I use https://securemypw.appspot.com https://securemypw.appspot.com (because I wrote it). I need to remember just 1 good password (that I don't use anywhere el

I use https://securemypw.appspot.com https://securemypw.appspot.com (because I wrote it). I need to remember just 1 good password (that I don't use anywhere else). I use it to encrpyt different passwords for different uses (gmail, banking, etc). I put the url with encrypted password in my bookmarks and a google doc (to share with my wife). To hack me, the attacker would need get both the link (from my laptop's bookmarks) or from the google doc ... and then would need to guess the password to decrypt it.