Password Generator
Secure, offline, crypto-grade randomness
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Generate a password to see strength
0
Entropy (bits)
0
Character pool size
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Brute-force time
16
Length
Never stored, never sent
The password is created by your browser's Web Crypto API and lives only in this page's memory. Close the tab and it vanishes — nothing is logged, synced or uploaded.
Related tools
What makes a strong password?
- Length beats cleverness. A 16-char random password beats a clever 8-char one by centuries of brute-force time.
- Use a different password per site — a breach at one service then only exposes that one service.
- Entropy = log₂(pool_size) × length. 80+ bits is excellent; 128 bits is practically uncrackable.
- Avoid patterns. "P@ssw0rd123!" looks strong but is in every attacker's dictionary.
Brute-force time assumes 10 billion guesses per second (a high-end GPU rig) trying every possible combination on average in half the keyspace.