Perfect Password?

Apparently this site has a password generator that is the strongest that you can use.

64 random hexadecimal characters (0-9 and A-F)
63 random printable ASCII characters
63 random alpha-numeric characters (a-z, A-Z, 0-9)

Check it out, it says its good for WiFi Security and “potentially unbreakable”

” ..our server generates a unique set of custom, high quality, cryptographic-strength password strings..”