Is the generated password stored or sent to a server?

No. Passwords are generated entirely in your browser using the Web Crypto API (crypto.getRandomValues). Nothing is sent to any server, logged, or stored anywhere — not even in your browser's local storage. Once you close or refresh the page, the password is gone.

How long should a secure password be?

Security experts recommend at least 16 characters for most accounts, and 20 or more for high-value accounts like email, banking, or password managers. Longer passwords with mixed character types are exponentially harder to crack. A 16-character password using all character types has over 96 bits of entropy — considered very strong by modern standards.

When should I use the "Exclude Ambiguous Characters" option?

Enable this option when you need to type the password manually or read it aloud — for example, when setting up a device or account without copy-paste access. Ambiguous characters like 0 (zero) vs O (uppercase O), 1 (one) vs l (lowercase L) vs I (uppercase i) look nearly identical in many fonts and can cause frustrating login failures. If you'll always paste the password from a password manager, leaving this option off gives you a slightly larger character pool and higher entropy.

Password Generator

Generated Password

5h<+nw^ultXzWt$4

StrengthVery Strong

Length16

864

Character Types

Uppercase (A–Z)Lowercase (a–z)Numbers (0–9)Symbols (!@#…)

Exclude ambiguous characters (0, O, o, 1, l, I, |)

About This Tool

Generate strong, secure passwords instantly. Customize length and character types — uppercase, lowercase, numbers, symbols. All generated in your browser using cryptographically secure randomness. Nothing is sent to any server.

This generator uses the Web Crypto API's crypto.getRandomValues — unlike the predictable Math.random(), this produces cryptographically secure random numbers that cannot be predicted even if an attacker observes previous outputs.

How To Use

Adjust the Length slider to set your desired password length (8–64 characters).
Select which Character Types to include — uppercase letters, lowercase letters, numbers, and symbols.
If you need to type the password manually, enable Exclude Ambiguous Characters to remove look-alike characters like 0 / O / o and 1 / l / I.
If you want a different password, click Regenerate Password to generate a fresh one.
Click Copy to copy the password to your clipboard, then save it in a password manager.

Password Length vs. Strength

The table below shows entropy and recommended use cases at each length when using all character types (uppercase, lowercase, numbers, symbols).

Length	Strength	Entropy (bits)	Recommended For
8	Medium	~52	Low-stakes accounts (bare minimum)
12	Strong	~79	Social media, general online accounts
16	Very Strong	~105	Email, banking, password managers
32	Very Strong	~210	High-security accounts, API keys, encryption keys

Frequently Asked Questions

Is the generated password stored or sent to a server?: No. Passwords are generated entirely in your browser using the Web Crypto API (crypto.getRandomValues). Nothing is sent to any server, logged, or stored anywhere — not even in your browser's local storage. Once you close or refresh the page, the password is gone.
How long should a secure password be?: Security experts recommend at least 16 characters for most accounts, and 20 or more for high-value accounts like email, banking, or password managers. Longer passwords with mixed character types are exponentially harder to crack. A 16-character password using all character types has over 96 bits of entropy — considered very strong by modern standards.
When should I use the "Exclude Ambiguous Characters" option?: Enable this option when you need to type the password manually or read it aloud — for example, when setting up a device or account without copy-paste access. Ambiguous characters like 0 (zero) vs O (uppercase O), 1 (one) vs l (lowercase L) vs I (uppercase i) look nearly identical in many fonts and can cause frustrating login failures. If you'll always paste the password from a password manager, leaving this option off gives you a slightly larger character pool and higher entropy.

This tool is provided for informational purposes only. Results are estimates and should not be relied upon as professional advice.

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