Secure Password Generator
Generate cryptographically secure random passwords. Customize length, character types, and see strength analysis!
Click Generate to create a password
Embed this Tool on your Website
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<iframe src="https://repo.pk/tools/privacy/secure-password-generator" width="100%" height="600px" frameborder="0" style="border-radius: 12px; border: 1px solid #e5e7eb; mb-4"></iframe>
<div style="text-align: right; font-size: 12px; color: #6b7280;">
Powered by <a href="https://repo.pk" target="_blank" rel="noopener noreferrer" style="color: #3b82f6; text-decoration: none;">Repo.pk Secure Password Generator</a>
</div>Features
- Crypto-secure randomness
- Strength analysis
- Crack time estimate
- Custom character sets
- Password history
How to Use
- 1Set your preferences
- 2Click Generate
- 3Copy the password
- 4Store it safely!
About Secure Password Generator
The Secure Password Generator helps you effortlessly create truly random and cryptographically strong passwords to protect your digital accounts from brute-force and dictionary attacks. Using the native Web Crypto API, this tool generates complex combinations of uppercase letters, lowercase letters, numbers, and symbols.
Security and privacy are the core values of this generator. Every password you generate is dynamically calculated right in your browser's memory and is never transmitted over the internet, saved in an external database, or tracked. Adjust your complexity settings to meet the strict password requirements of enterprise domains, banks, and more.
Frequently Asked Questions
How secure is this password generator?
This tool uses the Web Crypto API to generate cryptographically secure random passwords. All password generation happens locally in your browser — nothing is ever transmitted to any server, making it completely private and secure.
What is the best password length in 2026?
According to NIST guidance, modern security standards recommend minimum 16 characters for most accounts, 20+ for high-value accounts like email and banking, and 24+ for maximum security like encryption keys. Length matters more than character complexity.
Is Math.random() secure for passwords?
No. Math.random() is not cryptographically secure and should never be used for password generation. This tool uses crypto.getRandomValues() which provides true randomness suitable for security-sensitive applications.
Should I use symbols in my password?
Yes, including uppercase, lowercase, numbers, and symbols increases the character pool and makes passwords harder to crack. However, modern guidance emphasizes length over complexity — a 20-character lowercase password can be stronger than an 8-character complex one.
What does password entropy mean?
Entropy measures password strength in bits — the higher the entropy, the more guesses needed to crack it. A 16-character random password with all character types has approximately 103 bits of entropy, requiring billions of years to crack with modern hardware.
How long does it take to crack a strong password?
A 16-character password with mixed case, numbers, and symbols using cryptographically secure generation would take millions of years to brute-force with current GPU technology. Crack time estimates shown by this tool use 1 trillion guesses per second.
Should I reuse passwords across accounts?
Never reuse passwords across different accounts. If one service is breached, attackers use credential stuffing to try the same password on other services. Use a unique generated password for every account and store them in a password manager.
What is the difference between a password and a passphrase?
A password is a random string of characters while a passphrase uses multiple random words like "correct horse battery staple". Passphrases are easier to remember and can be equally secure. A 4-word passphrase from a large wordlist has about 44 bits of entropy.
How do I store my generated passwords safely?
Store all generated passwords in a reputable password manager like Bitwarden, 1Password, or Dashlane. These use AES-256 encryption and zero-knowledge architecture. Only remember your master password — let the manager handle everything else.
Does this generator support NIST compliance?
Yes. This tool follows NIST SP 800-63B guidelines by prioritizing length over arbitrary complexity rules, not requiring periodic changes, and using cryptographically secure random number generation.