Password Generator

Generate strong, random passwords with custom length and character sets.

Length16

664

Include

upperlowernumberssymbols

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passwords

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Why Strong Passwords Matter

A weak password is the single most common cause of account compromise. Data breaches, phishing attacks, and credential stuffing all rely on predictable or reused passwords. A strong, unique password for every account is the most effective single action you can take to protect your digital life — and this generator creates them instantly using your browser's cryptographically secure random number generator.

What Makes a Password Strong?

Password strength comes from two factors: length and character diversity. A 16-character password using uppercase, lowercase, numbers, and symbols has roughly 95¹⁶ possible combinations — approximately 4.4 × 10³¹. Even the most powerful computers on Earth cannot brute-force a password of this complexity within a human lifetime.

Password Length Guidelines

8 characters — Minimum acceptable for low-value accounts. Modern GPUs can crack 8-character passwords in hours.
12 characters — Good for most personal accounts with all character types enabled.
16 characters — Recommended default. Computationally infeasible to crack with current technology.
20+ characters — Use for critical accounts: banking, email, cloud storage, password manager master password.
32–64 characters — API keys, server credentials, and service-to-service tokens.

Using Cryptographic Randomness

This tool uses window.crypto.getRandomValues(), which is the Web Cryptography API built into every modern browser. This is the same cryptographic randomness used in banking applications and TLS key generation — not the weaker Math.random() function used by basic generators. Your passwords are genuinely unpredictable.

Privacy and Security

All password generation happens entirely in your browser. No generated passwords are ever transmitted, logged, stored, or sent to any server. This tool has no backend. Once the page loads, it can generate passwords with no network connection at all. You can verify this by turning on airplane mode and clicking Generate.

What to Do With Generated Passwords

Never store passwords in plain text files, spreadsheets, or sticky notes. Use a reputable password manager (1Password, Bitwarden, Dashlane, or your browser's built-in manager) to store and autofill passwords securely. Generate a unique password for every account — password reuse is the main way compromised credentials from one breach unlock other accounts.

Frequently Asked Questions

How random are the generated passwords?

Very random. This tool uses window.crypto.getRandomValues(), the Web Cryptography API built into all modern browsers. This provides cryptographically secure pseudorandom number generation (CSPRNG) — the same quality used in banking, TLS certificates, and encryption keys. It is fundamentally more unpredictable than Math.random().

Are the passwords stored anywhere?

No. All generation happens entirely in your browser with no server communication whatsoever. No generated password is ever transmitted, logged, or seen by anyone other than you. Once you close the tab, the passwords are gone. You can confirm this by opening browser developer tools and watching the Network tab — no requests are made when you click Generate.

Should I include all character types?

For maximum strength, yes. Enabling uppercase, lowercase, numbers, and symbols gives your password the largest possible character space, making brute-force attacks exponentially harder. The only reason to disable symbols is if a specific website prohibits them — some legacy systems reject passwords containing characters like < > or &.

How long should my password be?

16 characters is a solid default for most accounts. Use 20+ characters for critical accounts like email, banking, and your password manager. Password length has a far greater impact on security than complexity — a 20-character lowercase password is stronger than a 10-character mixed password.

Can I generate multiple passwords at once?

Yes. Select 1, 3, 5, or 10 from the count selector before clicking Generate. Each password is independently generated with its own cryptographic random sequence. Generating multiple passwords at once is useful for provisioning test accounts, creating temporary credentials, or when setting up multiple services simultaneously.

What does the strength indicator mean?

The strength meter evaluates length, use of uppercase, lowercase, numbers, and symbols against a scoring rubric. Weak (red) means the password is easily guessable or too short. Medium (amber) is acceptable for low-value accounts. Strong (green) is suitable for most accounts. Very Strong (navy) indicates a password that is computationally infeasible to crack.

Is it safe to generate passwords in a browser?

Yes, with caveats. This tool is safe because it uses the browser crypto API and has no network calls. However, only use password generators on a device you trust and control. Avoid generating passwords on public or shared computers, and never use a password generator that requires an internet connection to return results.

Is it free?

Completely free, unlimited, no account needed. Works offline once the page has loaded.