This tool lets you generate modern, secure passwords, based on a random selection of characters, optionally including numbers and special (non-ASCII) characters.
This secure password generator helps because we are naturally poor at creating randomness.
We all tend to rely on predictable patterns that are easily cracked by "Brute-Force", "Rainbow Tables" / "Dictionary Attacks".
If you need to be able to remember your new password, use the Memorable Secure Password Generator instead.
All of the processing this tool does, is on your own PC / Laptop / Phone / Tablet. Your suggested password doesn't get transmitted across any network, so no-one else has any chance to see it. But you shouldn't trust ANYONE on the internet, so for peace of mind you should alter the password you actually use, perhaps by swapping the order of the memorable words, and/or by deliberately miss-spelling one or more words.