Your text will be transformed and combined with random characters (0/20)
Combines your memorable text with random characters and l33t transformation for security. Each generation produces a different password.
A Password Generator is a tool that automatically creates random and strong passwords to help protect your online accounts from hacking. With combinations of uppercase letters, lowercase letters, numbers, and symbols, the generated passwords are far more difficult to guess than human-created passwords.
Password Generator Use Cases
- Create new passwords when registering accounts
- Replace old weak passwords
- Generate PINs or passphrases
- Create temporary credentials
- Used by developers when needing simple tokens on the frontend
How to Use This Tool
- Choose password type: Random, Memorable, or PIN
- Adjust password length using the slider
- Select characters to include (uppercase, lowercase, numbers, symbols)
- Password will appear automatically with each change
🔒 Frontend Password Generator Security
All calculations happen in your browser, no data is sent to the server. Uses crypto.getRandomValues() built into browsers for secure and unpredictable results.
Strong password generation is critical for security, and I built this tool after seeing too many developers use weak patterns like 'Password123!' or reuse passwords across services. Whether you're creating user accounts, API keys, database credentials, or personal passwords, cryptographically random passwords with sufficient entropy are your first defense against brute-force and dictionary attacks. This tool generates passwords using the browser's cryptographically secure random number generator (crypto.getRandomValues())—not Math.random() which is predictable. You control length (8-128 characters), character sets (uppercase, lowercase, numbers, symbols), and special requirements. All generation happens client-side with no network requests—your passwords never leave your browser. The tool calculates entropy bits and estimates crack time to help you understand password strength.
How to Use
Adjust password length using the slider (8-128 characters)—longer is exponentially more secure. Toggle character sets: Uppercase (A-Z), Lowercase (a-z), Numbers (0-9), Symbols (!@#$%^&*). Enable at least 2-3 character types for good entropy. Optional: Toggle 'Avoid Ambiguous' to exclude lookalike characters (0/O, 1/l/I) for manually typed passwords. The tool shows real-time password strength (Weak/Fair/Good/Strong) and entropy bits. Click 'Generate' for a new password, 'Copy' to clipboard. Generate multiple passwords with 'Bulk Generate' (up to 100 at once) for batch account creation or password rotation. Entropy formula: log2(charset_size^length)—a 12-char password with all character types has ~78 bits of entropy (2^78 combinations).
Common Use Cases
User Account Passwords
Generate 16+ character passwords with all character types for admin accounts or high-privilege users.
API Keys & Secrets
Create 32-64 character random strings for API authentication tokens, webhook secrets, or encryption keys.
Database Credentials
Generate strong passwords for production database root users (16+ chars, store in secrets manager).
Temporary Passwords
Create 8-12 character passwords for password reset flows or initial account setup (users change later).
Wi-Fi Passwords
Generate 16+ character WPA2/WPA3 passwords with symbols (avoid ambiguous chars if users type manually).
SSH Key Passphrases
Create 20+ character passphrases to protect private SSH keys.
Password Manager Master Password
Generate a memorable 20+ character password using dice-ware or custom pattern, then manage all others in 1Password/Bitwarden.
Limitations & Important Notes
This tool generates cryptographically strong passwords but cannot guarantee how you store or use them. NEVER store passwords in plain text—hash with bcrypt/argon2. NEVER reuse passwords across services—use a password manager. NEVER share passwords via email/Slack—use encrypted secrets sharing tools. Generated passwords are random—not memorable; for human-memorized passwords consider passphrases (4-6 random words) which offer better usability with similar entropy. The 'crack time' estimate assumes offline attack with modern GPUs (billions of guesses/sec)—online attacks with rate limiting are much slower. Very long passwords (64+ chars) may hit length limits in some systems (e.g., older UNIX crypt() limited to 72 chars for bcrypt). Symbols (!@#$) may cause issues in some contexts (shells, config files)—test or escape properly. For extreme security (government, military), use hardware security keys (YubiKey) and multi-factor authentication, not just strong passwords.