What actually makes a password strong
Length and randomness — not clever substitutions. "P@ssw0rd!" looks complex and falls instantly, because attackers' tools try leetspeak patterns first. A generated 16-character password from this page has roughly 100 bits of entropy: effectively uncrackable by guessing. Two rules make it practical: use a different password for every account (a breach of one site must not unlock the rest), and store them in a password manager so your brain only carries one master password. The strength checker's estimates assume random guessing — a password built from your name, birthday or football team is weaker than any number shown, whatever its length.
Frequently Asked Questions
Are the generated passwords stored anywhere?
No. They are created in your browser's memory, displayed for you to copy, and gone when you close the tab. We never see them.
What length should I use?
16+ characters for important accounts (email, banking). Most sites accept 16; use the maximum a site allows when it matters.
Passkeys and 2FA?
Where a site offers passkeys or two-factor authentication, turn them on — they protect you even if a password leaks.
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