Password Generator

Generate strong, cryptographically secure passwords instantly. Nothing is stored or sent anywhere.

StrengthVery Strong · 103 bits of entropy
16
43264128

Bulk generate

5

Free Strong Password Generator

Create cryptographically secure passwords with a single click. Customise length and character sets, check the strength meter, and bulk-generate up to 50 passwords at once. Everything runs in your browser, no passwords are stored or transmitted.

Cryptographically secure

Uses the browser's Web Crypto API (crypto.getRandomValues), the same standard used by security software and password managers.

Entropy strength meter

See exactly how strong your password is in bits of entropy. Rated Weak → Fair → Good → Strong → Very Strong.

Fully customisable

Set length from 4 to 128 characters. Toggle uppercase, lowercase, numbers, and symbols independently.

Exclude ambiguous characters

Remove look-alike characters (0/O, 1/l/I) so passwords are easier to read and type without errors.

Bulk generation

Generate up to 50 unique passwords in one click, useful for provisioning multiple accounts or systems.

100% private

No passwords are stored, logged, or sent to any server. Everything runs locally in your browser.

Frequently asked questions

Are the generated passwords secure?
Yes. Passwords are generated using the browser's Web Crypto API (crypto.getRandomValues), which is cryptographically secure, suitable for any account or system.
Are my passwords stored or sent anywhere?
No. The generator runs entirely in your browser. No password is ever sent to a server or stored anywhere.
How long should my password be?
For most accounts, 16 characters with mixed types gives 100+ bits of entropy, effectively uncrackable. Use 20+ characters for sensitive accounts like banking or email.
What does "exclude ambiguous characters" mean?
Characters like 0/O and 1/l/I look similar in many fonts. Excluding them makes passwords easier to read and type without errors, useful for shared credentials.
What is entropy and why does it matter?
Entropy (in bits) measures how many guesses it would take to crack the password by brute force. Each extra bit doubles the guesses needed. 70+ bits is strong; 100+ is extremely secure.
Can I generate multiple passwords at once?
Yes. The Bulk Generate panel lets you generate up to 50 passwords at once with the same settings. Each can be copied or removed individually.
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