Why Use a Password Generator?
Humans are terrible at creating random passwords. We gravitate toward patterns, dictionary words, and personal information — all of which make passwords easy to crack. A random password generator eliminates human bias, using cryptographically strong randomness to produce passwords that resist brute-force and dictionary attacks.
What Makes a Strong Password?
- Length over complexity: A 16-character lowercase password is harder to crack than an 8-character password with symbols. Length is the single biggest factor.
- Character variety: Mixing uppercase, numbers, and symbols adds entropy. Each additional character set multiplies the possible combinations.
- True randomness: Using
crypto.getRandomValues()— the same API behind most password managers — ensures unpredictability. - No patterns: Avoid keyboard walks (qwerty), repeated characters, and sequential numbers.
Recommended Settings by Use Case
| Use Case | Length | Charsets |
|---|---|---|
| General web accounts | 16+ | a-z, A-Z, 0-9, symbols |
| Banking / finance | 20+ | All charsets |
| Wi-Fi passwords | 20+ | All charsets |
| API keys / tokens | 32–64 | a-z, A-Z, 0-9 (no symbols) |
FAQ
Is the password sent to a server?
No. All generation happens locally using crypto.getRandomValues() in your browser. The password never leaves your device.
How random is it really?
We use the Web Crypto API's CSPRNG (cryptographically secure pseudorandom number generator), seeded by your operating system's entropy source. This is the same API used by major password managers.
Should I use this instead of a password manager?
This tool generates strong passwords, but a password manager also stores, syncs, and auto-fills them. For day-to-day use, combine both: generate here, save in your manager.