infoOverview

The password generator is an online tool for generating secure random passwords in bulk. You can customize the character set, length, and count, making it useful for everything from system setup by engineers to setting initial passwords for end users.

Passwords people make up tend to prioritize memorability over unpredictability, which is exactly what makes them guessable — dictionary words, birthdays, keyboard patterns. This tool draws from a cryptographically secure random source instead, so every password resists both brute-force and dictionary attacks, and you can issue a whole batch of them in one pass.

checklistHow to Use

1. 1Select the character type in Characters: Alphanumeric + Symbols / Alphanumeric / Lowercase + Digits / Digits Only.
2. 2Set the password length in Length.
3. 3Set how many passwords to generate at once in Count.
4. 4Turn on Exclude Similar Characters if the password will be typed by hand or read aloud.
5. 5Click the "Generate" button.

Note: if the target system disallows symbols entirely, or bans specific ones, switch to Alphanumeric or Lowercase + Digits — or generate a batch and manually discard the results containing the disallowed symbols.

menu_bookSpecifications & Glossary

• Alphanumeric + Symbols: Uppercase, lowercase, digits, and symbols together — the largest character pool here, so it packs the most entropy per character. Use it whenever the target system has no restriction on special characters.
• Alphanumeric: Uppercase, lowercase, and digits, with no symbols. The fallback for legacy systems or form fields that reject punctuation.
• Lowercase + Digits: Lowercase letters and digits only, which keeps the result easy to read aloud or copy from a printed page, and safe to drop into a URL path without escaping.
• Digits Only: Numbers only — the right choice for PINs and numeric one-time codes, not for anything you'd call a password.
• Exclude Similar Characters: Strips look-alike characters — 0 vs O, 1 vs l, I vs | — that get misread on a printed handout or mistyped when someone reads a password out loud over the phone.
• Entropy: Password strength is measured in bits of entropy, and NIST SP 800-63B's guidance favors length over forced complexity rules — a long passphrase typically beats a short string crammed with mandatory symbols. As a rule of thumb, aim for at least 80 bits; each additional character type and each extra character added to the length grows the search space exponentially.
• Randomness source: Each character comes from the browser's cryptographically secure random number generator (the Web Crypto API's Crypto.getRandomValues), not a predictable pseudo-random source like Math.random().
• Data handling: Generated passwords live only in the browser's memory for the current tab — nothing is sent to or stored on a server. Reloading the page discards whatever was generated.

lightbulbUse Cases

• Bulk-generating initial passwords when onboarding a batch of new user accounts.
• Generating throwaway API secrets or symmetric keys for local development and testing.
• Creating disposable dummy passwords for QA and staging accounts.
• Issuing an alphanumeric-only password for hardware that's awkward to type symbols into, like a Wi-Fi router admin panel or a shared kiosk device.
• Comparing several generated options side by side to settle on one that satisfies a corporate password policy (minimum length, required character types).

quizFAQ

Is the generated password stored anywhere?

No. Everything happens client-side — nothing is sent to a server, and results aren't written to cookies or local storage. Leaving the page clears whatever was generated, so copy anything you need into a safe place before you navigate away.

How should I think about password strength and entropy?

Roughly, entropy is log2(character pool size) multiplied by length — bigger numbers mean exponentially more brute-force attempts required. A 16-character password from the ~94-character alphanumeric-plus-symbols pool clears 100 bits, well beyond what's crackable in any practical timeframe. For your most sensitive accounts, favor both a larger character set and more length.

When should I avoid including symbols?

Yes — if the target system rejects certain symbols, or the password will be read aloud or typed in by hand, Alphanumeric or Lowercase + Digits avoids those headaches entirely. For devices that only accept a numeric PIN, use Digits Only.

Does enabling Exclude Similar Characters weaken security?

It shrinks the character pool slightly, so entropy dips a little, but the effect is negligible in practice. The bigger real-world risk is someone misreading a 0 for an O or a 1 for an l off a printout or over the phone — turn this on whenever a human will be typing the password in.

Is a short length like 8 characters still safe to use?

Even a rich character set can't make up for too little length — entropy runs short fast at 8 characters. Aim for at least 12 where you have the choice, and 16 or more for anything sensitive. Treat 8-character passwords as a fallback for systems that cap the field, not a default.

Can a generated password end up skewed toward one character type?

Each character is chosen independently, so on rare occasions a result can lean heavily toward one character type, like mostly uppercase or mostly symbols. If a policy requires at least one of each type, glance at the output and regenerate any password that doesn't meet it.