Password Generator - Create Strong Secure Random Passwords Online Free
Generate cryptographically secure passwords with advanced customization. Bulk generation, strength analysis, pronounceable passwords, and passphrase options. 100% private and free.
đ Password Generator
Create cryptographically secure passwords with advanced customization options
Quick Presets
Password History
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đĸ Generate Multiple Passwords
Generate multiple passwords at once for different accounts or team members
About This Password Generator
The Password Generator creates cryptographically secure passwords using the Web Crypto API, ensuring true randomness that's impossible to predict. Unlike simple random generators, this tool uses the same security standards employed by banks and government agencies to protect sensitive data. Whether you're securing personal accounts, managing enterprise credentials, or generating API keys, this tool provides instant, reliable password creation with advanced customization options including pronounceable passwords and memorable passphrases.
Why Use Our Password Generator?
Cryptographically Secure
Uses Web Crypto API (crypto.getRandomValues()) for true random number generation, not pseudo-random algorithms. Each password is unpredictable and unique.
Pronounceable Passwords
Generate passwords that follow phonetic patterns, making them easier to remember and type while maintaining strong security.
Passphrase Generator
Create memorable passphrases using random words. Four random words provide better security than complex 8-character passwords.
Bulk Generation
Generate up to 100 unique passwords simultaneously for team onboarding, testing environments, or managing multiple accounts.
Advanced Strength Meter
Real-time entropy calculation and crack time estimation. See exactly how long it would take to brute-force your password.
100% Private & Offline
All generation happens in your browser using JavaScript. No passwords are transmitted, stored, or logged anywhere. Works offline after initial page load.
How to Use the Password Generator
- Choose Password Type: Select Random Password for maximum security, Pronounceable for easier typing, or Passphrase for memorability
- Set Length: Use the slider to select password length (16+ characters recommended for critical accounts)
- Customize Options: Enable or disable uppercase, lowercase, numbers, and symbols based on your requirements
- Apply Advanced Filters: Exclude ambiguous characters (0, O, l, I) if you'll be typing the password manually
- Generate Password: Click the regenerate button or modify any option to create a new password instantly
- Review Strength: Check the strength meter and estimated crack time to ensure adequate security
- Copy or Download: Click the copy button to add the password to your clipboard, or use bulk generation to create multiple passwords
Common Use Cases
- Account Security: Create unique passwords for each online account to prevent credential stuffing attacks where one breach compromises multiple accounts
- Enterprise Onboarding: Generate temporary passwords for new employees that meet company security policies (minimum length, character requirements, complexity rules)
- API Key Generation: Create secure random strings for API keys, authentication tokens, and webhook secrets in development projects
- Database Credentials: Generate strong passwords for database users, especially for production environments where security is critical
- Password Rotation: Quickly create new passwords when updating credentials for compliance requirements or after security incidents
- Testing Environments: Use bulk generation to create multiple test accounts with secure passwords for QA and staging environments
- WiFi Networks: Generate strong WPA2/WPA3 passwords for home and office wireless networks that are difficult to crack
- Encrypted Archives: Create secure passwords for encrypted ZIP files, password-protected PDFs, and encrypted backup archives
Password Security Best Practices
- Use 16+ Characters for Critical Accounts: Banking, email, and work accounts should use passwords of at least 16 characters. Each additional character exponentially increases crack time.
- Enable All Character Types: Including uppercase, lowercase, numbers, and symbols maximizes the character space, making brute-force attacks exponentially harder.
- Never Reuse Passwords: Each account should have a unique password. If one service is breached, attackers can't access your other accounts.
- Use a Password Manager: Store generated passwords in a reputable password manager like Bitwarden, 1Password, or LastPass rather than writing them down or saving in plain text.
- Consider Passphrases for Memorability: Four random words (like "correct-horse-battery-staple") provide excellent security while being easier to remember than random character strings.
- Avoid Common Substitutions: Don't use predictable patterns like "@" for "a" or "3" for "e". True randomness is always stronger than human-created patterns.
- Enable Two-Factor Authentication: Even with strong passwords, add 2FA (authenticator apps, hardware keys) for critical accounts as an additional security layer.
- Exclude Ambiguous Characters for Manual Entry: If you'll be typing the password frequently, exclude characters like 0/O and l/I/1 to prevent transcription errors.
Understanding Password Strength
Password strength is measured by entropy - the amount of randomness in the password. Our strength meter calculates entropy based on character space and length:
- Weak (< 40 bits): Can be cracked in seconds to minutes with modern hardware. Never use for important accounts.
- Medium (40-60 bits): May take hours to days to crack. Acceptable for low-value accounts but not recommended.
- Strong (60-80 bits): Would take months to years to crack. Suitable for most online accounts.
- Very Strong (80+ bits): Would take centuries to crack with current technology. Ideal for critical accounts, encryption keys, and sensitive data.
A 16-character password with all character types has approximately 95 bits of entropy, making it virtually uncrackable with current technology.
Random vs Pronounceable vs Passphrase
Random Passwords
Maximum security through complete randomness. Best for accounts you'll access through password managers. Example: K9#mL2$pQ7@nR5
Pronounceable Passwords
Follow phonetic patterns making them easier to type and remember while maintaining strong security. Best for accounts you'll type frequently. Example: Tuvaxo2#Kemid
Passphrases
Use random words separated by delimiters. Easier to remember and type, with excellent security when using 4+ words. Best for master passwords and frequently-used accounts. Example: Correct-Horse-Battery-Staple-47
Frequently Asked Questions
Are the passwords generated truly random and secure?
Yes, we use the Web Crypto API's crypto.getRandomValues() method, which provides cryptographically secure random number generation. This is the same technology used by password managers, banks, and security applications. Unlike Math.random(), which is predictable, crypto.getRandomValues() uses the operating system's entropy source to ensure true randomness.
Do you store or track the passwords I generate?
Absolutely not. All password generation happens entirely in your browser using JavaScript. Nothing is sent to our servers, stored in databases, or logged in any way. Your passwords are completely private. The tool even works offline after the initial page load, proving that no data is transmitted.
How long should my password be?
We recommend at least 12-16 characters for most accounts. For critical accounts like email, banking, or work systems, use 16-24 characters. Each additional character exponentially increases security. A 16-character password with all character types would take trillions of years to crack with current technology, while an 8-character password might be cracked in hours.
What's the difference between a password and a passphrase?
A password is typically a random string of characters (like K9#mL2$pQ7), while a passphrase is a sequence of random words (like Correct-Horse-Battery-Staple). Passphrases are easier to remember and type but still provide excellent security when using 4+ random words. A 4-word passphrase has more entropy than a typical 8-character complex password.
Should I use pronounceable passwords or random passwords?
Use random passwords for maximum security, especially for accounts accessed through a password manager. Use pronounceable passwords when you need to type the password frequently or remember it temporarily. Pronounceable passwords follow phonetic patterns making them easier to type while maintaining strong security through length and character variety.
Can I use this tool offline?
Yes, once the page loads, the password generator works entirely in your browser without requiring an internet connection. You can even save the page locally (File > Save As) and use it completely offline. This proves that no data is being sent to external servers.
Why should I exclude ambiguous characters?
Ambiguous characters like 0 (zero) and O (letter O), or l (lowercase L), I (uppercase i), and 1 (one) look similar in many fonts. If you'll be typing the password manually or reading it from a screen, excluding these characters prevents transcription errors. However, if you're copying and pasting from a password manager, including all characters provides slightly more security.
How does bulk generation work?
Bulk generation creates multiple unique passwords using your current settings. Each password is independently generated with the same cryptographic security. This is useful for creating passwords for multiple team members, test accounts, or when you need to update passwords across several services simultaneously. You can generate up to 100 passwords at once and download them as a text file.
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