Strong Password Generator
Generate strong, random passwords with custom rules.
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10 Passwords — click any to copy
About Password Generator
Generate cryptographically secure random passwords instantly. Customise length (4–128 characters), choose which character sets to include (uppercase, lowercase, digits, symbols), and exclude ambiguous characters (0, O, l, 1). Generate one password or a batch of 10. All randomness comes from the browser's crypto.getRandomValues() — nothing is sent to any server.
Use Cases
Creating secure account passwords, generating API keys and secret tokens, setting up database passwords, creating random passphrases, generating temporary passwords for new accounts.
How It Works
Builds a character pool from selected sets, then uses crypto.getRandomValues() to pick random indices from the pool for each character position. This ensures cryptographic randomness, unlike Math.random().
FAQs
Are these passwords truly random?
Yes. The tool uses crypto.getRandomValues(), the browser's cryptographically secure random number generator — the same used in TLS and encryption libraries.
What length should I use?
For most accounts, 16 characters with mixed character sets is secure. For sensitive systems like servers or databases, use 24+ characters.
Why are ambiguous characters excluded?
Characters like 0, O, l, 1, I look similar in many fonts and cause transcription errors. Exclude them when you need to type the password manually.