What is a password generator?
Password Generator is a tool that instantly creates a secure random password by combining uppercase letters, lowercase letters, numbers, and symbols exactly the way you want. It uses your browser's cryptographically secure random number generator (crypto.getRandomValues), so you get a genuinely unpredictable password rather than one based on a weaker pattern. Use it whenever you're creating a new account or want to replace an existing password with a stronger one. Some similar online generators use predictable Math.random() or send the generated password to a server for logging — this tool was built from the start to avoid both: view the page source and you'll find no outgoing network requests at all.
How to use it
Set your desired password length with the slider, and check the character types to include (uppercase, lowercase, numbers, symbols). The password regenerates automatically every time you change an option, and its strength (Weak to Very Strong) is shown right alongside it. Once you're happy with the result, click "Copy" to copy it to your clipboard.
When it comes in handy
- Creating a secure password for a new account
- Replacing an existing password with a stronger one
- Using a different password for every site
- Setting a new password for a Wi-Fi router or device
What actually makes a password secure
Most password breaches aren't caused by brute-force guessing — they come from credential stuffing (reusing leaked password lists across sites) or dictionary attacks (guessing common patterns). That's why never reusing the same password across sites often matters more in practice than length or complexity alone. NIST's current guidance (SP 800-63B) also emphasizes sufficient length (at least 8 characters, 12+ recommended) and per-site uniqueness over forced periodic password changes.
Common mistakes
- Including guessable personal info like a birthday or phone number
- Using common dictionary patterns like "password123" or "qwerty"
- Reusing the same password across multiple sites — a breach on one site puts every account at risk
- Maximizing complexity while keeping length short (under 8 characters) — length matters more for real-world security strength
Frequently Asked Questions
- Is the generated password secure?
- Yes. Instead of Math.random(), it uses your browser's cryptographically secure random number generator (crypto.getRandomValues), producing a genuinely unpredictable value.
- Is my password sent to a server?
- No. Everything happens entirely in your browser — nothing you enter or generate is ever sent to or stored on a server.
- How long should a secure password be?
- 12 characters or more is generally recommended, and for important accounts, 16+ characters combining uppercase, lowercase, numbers, and symbols is safer.
- Which matters more, length or complexity?
- Length generally matters more. A random 12-character string takes far longer to brute-force than a complex 8-character one.
- Do I need a password manager?
- Not required, but since remembering a different random password per site is hard, a password manager lets you safely store and reuse the strong passwords this tool generates.
- Does adding symbols always make it safer?
- Symbols increase the number of possible combinations, but the effect is limited if the password is short. Including symbols while keeping the length at 12+ characters is most effective.