Secure Password Generator - 100% Client-Side, No Tracking

How to Use This Secure Password Generator

Creating a strong, secure password takes seconds. Follow these steps:

1. Set the length using the slider (4-64 characters). 16 is the default and a good balance for most accounts.
2. Choose character sets - keep uppercase, lowercase, numbers and symbols checked for maximum entropy. Optionally exclude ambiguous characters (0, O, 1, l, I).
3. Click "Generate Password" (or "New") to create a fresh cryptographically secure password instantly.
4. Check the strength meter - it shows entropy in bits and an estimated crack time assuming 1 trillion guesses per second.
5. Click 📋 Copy to copy the password to your clipboard, then paste it into your password manager or sign-up form.

Everything runs in your browser. No sign-up, no tracking, no storage.

Secure Password Generator in Browser - Web Crypto API Powered

Our secure password generator creates cryptographically strong random passwords directly in your browser. Unlike many online password generators that send your preferences to a server and return a generated password, our tool uses the Web Crypto API's crypto.getRandomValues() function - the same cryptographically secure random number generator used by TLS for HTTPS connections and by banks. Your passwords are generated locally on your device and never transmitted over the network, making this generator safe for creating passwords for your email, bank, cryptocurrency wallets, and other high-value accounts.

Password strength is determined by two factors: length and entropy (randomness). A 16-character password using uppercase, lowercase, numbers and symbols has approximately 95^16 = 4.4 × 10^31 possible combinations - more than the number of stars in the observable universe. Even a supercomputer capable of guessing 1 trillion passwords per second would need about 1.4 million years to brute-force such a password. In contrast, an 8-character password from the same character set has only 95^8 = 6.6 × 10^15 combinations, which a modern GPU can crack in a few hours.

Because the generator runs entirely client-side, there is no possibility of your password being intercepted in transit, leaked from a server-side log, or exposed in a data breach. Open Developer Tools (F12) → Network tab to verify - you will see zero requests while generating passwords. The tool is free forever with no daily limits and no premium tiers, and the "Recent" history feature is purely client-side and disappears the moment you close the tab.

Recommended Password Length

• 12 characters: Minimum for low-value accounts (forums, social media with 2FA enabled). Crack time: ~3 weeks on a fast GPU.
• 16 characters: Recommended for most accounts including email and banking. Crack time: ~1.4 million years.
• 20 characters: Strongly recommended for password manager master passwords and cryptocurrency wallets. Crack time: ~14 billion years.
• 24+ characters: For ultra-sensitive accounts (root admin, cold storage wallets). Effectively uncrackable.

Common Password Mistakes to Avoid

• Reusing passwords: If one site gets breached, attackers try the same password on your other accounts (credential stuffing). Use a unique password for every account.
• Using personal info: Names, birthdays, pet names and phone numbers are easily found on social media. Avoid them entirely.
• Dictionary words: "Password123", "LetMeIn", "Qwerty" - all are in every cracking dictionary within milliseconds.
• Substituting numbers for letters: "P@ssw0rd" is just as easy to crack as "password" because crackers try these substitutions by default.
• Storing passwords in plain text files: Use a password manager like Bitwarden, 1Password or KeePass instead.

Frequently Asked Questions