How does this password generator work?

This generator uses the Web Crypto API (crypto.getRandomValues()) to generate cryptographically secure random passwords directly in your browser. It never sends passwords to a server.

Are generated passwords stored anywhere?

No. Passwords are generated entirely in your browser and never transmitted to any server. Only the last 10 passwords are kept in session memory and cleared when you close the tab.

What makes a password strong?

A strong password is long (16+ characters), uses a mix of uppercase, lowercase, numbers, and symbols, avoids dictionary words, and is unique to each account. Length matters more than complexity.

What is password entropy?

Entropy measures unpredictability in bits. Higher entropy means more possible combinations and a harder-to-crack password. 80+ bits of entropy is considered very secure against brute force attacks.

Should I use a password manager?

Yes. A password manager lets you use unique, complex passwords for every account without memorizing them. Generated passwords like those from this tool are designed to be stored in a password manager, not memorized.

What is the difference between random and pronounceable passwords?

Random passwords are most secure but hard to type manually. Pronounceable passwords alternate consonants and vowels to create memorable syllables while still being random and strong enough for most uses.

Free Strong Password Generator Online

Generate cryptographically secure passwords with the Web Crypto API — never Math.random(). Tune length and character sets, see live strength and entropy, and generate in bulk. Nothing leaves your browser.

—

——

Length 16

Uppercase (A–Z) Lowercase (a–z) Numbers (0–9) Symbols Exclude similar (i l 1 L o 0 O) No duplicate characters No sequential (abc, 123) Pronounceable mode

Use only these symbols (optional)

Must include (optional)

Bulk Generation

How many (1–100)

History (this session)

Password Security Tips

The single most important factor in password strength is length — every additional character multiplies the number of combinations an attacker must try. Aim for at least 16 characters on important accounts. Never reuse passwords across sites: if one service is breached, attackers will try the same credentials everywhere (a technique called credential stuffing). Because no human can remember dozens of unique 16-character strings, use a password manager — it generates, stores, and autofills strong passwords so you only memorize one master password. Wherever it is offered, enable two-factor authentication (2FA), ideally with an authenticator app or hardware key rather than SMS. Avoid dictionary words, names, dates, and keyboard patterns, all of which fall quickly to modern cracking tools. Finally, treat password reset emails and security questions as part of your attack surface — a weak recovery flow undoes a strong password.

Frequently Asked Questions

How does this password generator work?: This generator uses the Web Crypto API (crypto.getRandomValues()) to generate cryptographically secure random passwords directly in your browser. It never sends passwords to a server.
Are generated passwords stored anywhere?: No. Passwords are generated entirely in your browser and never transmitted to any server. Only the last 10 passwords are kept in session memory and cleared when you close the tab.
What makes a password strong?: A strong password is long (16+ characters), uses a mix of uppercase, lowercase, numbers, and symbols, avoids dictionary words, and is unique to each account. Length matters more than complexity.
What is password entropy?: Entropy measures unpredictability in bits. Higher entropy means more possible combinations and a harder-to-crack password. 80+ bits of entropy is considered very secure against brute force attacks.
Should I use a password manager?: Yes. A password manager lets you use unique, complex passwords for every account without memorizing them. Generated passwords like those from this tool are designed to be stored in a password manager, not memorized.
What is the difference between random and pronounceable passwords?: Random passwords are most secure but hard to type manually. Pronounceable passwords alternate consonants and vowels to create memorable syllables while still being random and strong enough for most uses.