Secure Password Generator
Generate passwords the secure way: drawn from your browser's cryptographic random number generator, created on your device, and never transmitted or stored. Choose length and character sets above.
Security is a property of the process
A password generator is only as trustworthy as its randomness and its plumbing. Weak generators seed from the clock or a predictable formula, and server-side generators see — and could log — every password they make. This page takes the other route: the password generator above draws from crypto.getRandomValues, your browser's cryptographic random source, and runs entirely on your device. There is no server round-trip to intercept and no database where your new password could leak from.
Length first, complexity second
Password strength grows exponentially with length and only linearly with alphabet size. That is why this tool makes length the headline control: 16 characters is a sane floor for important accounts, and 20+ costs you nothing when a password manager remembers it. If a site caps length or bans symbols, the 16 character password generator is pre-tuned for the common case, while the strong password generator explains the entropy maths in more depth.
The rule that matters most
One password per account. A random password reused on five sites is only as safe as the weakest of the five. Generate fresh, store in a manager, and let each account's password be unique — that combination defeats both brute force and credential stuffing, the two ways passwords actually fall.
Private by design
Your password is generated in your browser tab and nowhere else. We could not keep it if we wanted to — there is no "we" in the loop at all.
Frequently asked questions
What makes a password generator 'secure'?
Two things: the randomness source and where generation happens. This tool uses the Web Crypto API — the browser's cryptographic random generator — and runs entirely on your device, so the password exists only in your tab until you copy it.
How long should a secure password be?
Length is the strongest lever. Sixteen characters or more makes brute force impractical for any realistic attacker; each added character multiplies the search space by the size of the character set.
Should I include symbols and mixed case?
A larger character set helps, but length helps more. A 20-character lowercase password is stronger than a 10-character one using every symbol on the keyboard. Use both when a site allows it.
Can I trust a password I generated online?
You should not have to trust: verify. Because generation happens locally with no network call, the password cannot be logged server-side. Closing the tab destroys it — save it in your password manager first.
Is a generated password better than one I invent?
Almost always. Human-chosen passwords cluster around names, dates and keyboard patterns that cracking dictionaries try first. A random 16-character string has no pattern to exploit.
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