Length is King
Every additional character exponentially increases password strength. A 16-character password is millions of times stronger than an 8-character one, even with the same character types.
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Generate strong, cryptographically secure passwords in your browser using window.crypto. Fully customizable with length options (4-128 chars), character types, and strength meter. 100% client-side, no server communication.
Password strength is measured by entropy—the number of possible combinations an attacker must try. Strong passwords combine length and character diversity.
Every additional character exponentially increases password strength. A 16-character password is millions of times stronger than an 8-character one, even with the same character types.
Using uppercase, lowercase, numbers, and symbols increases the character pool from 26 (lowercase only) to 94 characters. This dramatically multiplies possible combinations.
Avoid dictionary words, names, dates, or patterns. Cryptographically random passwords generated by this tool are immune to dictionary attacks and brute force.
Uses the Web Cryptography API's getRandomValues() method, which provides cryptographically strong random values. Far superior to Math.random().
Your passwords are generated entirely on your device. Nothing is sent to servers, logged, or stored anywhere except your clipboard.
Works offline once loaded. No API calls, no rate limits, no dependencies on external services.
Create secure passwords in seconds with our cryptographically strong password tool. Follow these simple steps to get started.
Use the slider to choose your desired password length (4-128 characters). Longer passwords are more secure.
Choose which character types to include: uppercase, lowercase, numbers, and symbols. More variety equals stronger passwords.
Optionally exclude characters that look similar (like i, l, 1, O, 0) to avoid confusion when typing.
Review the color-coded strength meter and entropy score to ensure your password meets your security requirements.
Click the regenerate button to create a new password with the same settings. Generate as many as you need.
Click the copy button to securely copy your password to clipboard. Your password never leaves your device.
Uses window.crypto.getRandomValues() for true cryptographic randomness, not weak pseudo-random algorithms. Military-grade security.
Visual color-coded meter shows password strength with entropy calculation. See exactly how secure your password is.
Adjust length (4-128 chars), include/exclude uppercase, lowercase, numbers, symbols, and filter similar characters.
All password generation happens in your browser. No server communication, no logging, no tracking. Complete privacy.
Generate new passwords in milliseconds. No waiting, no loading. Create unlimited passwords instantly.
Copy generated passwords to clipboard with a single click. Includes visual confirmation when copied.
Create strong passwords for new online accounts, social media, email, banking, and any service requiring authentication.
Generate new passwords when rotating credentials for improved security. Recommended every 90 days for sensitive accounts.
Create secure test passwords for staging environments, development databases, and demo accounts.
Generate strong, memorable passwords for home or office WiFi networks. Use 16+ characters for WPA2/WPA3 security.
Create random strings for API keys, authentication tokens, session IDs, and secret keys.
Generate an ultra-secure master password for your password manager. Use maximum length with all character types.
Our secure password generator prioritizes your privacy and security. Unlike online services that may log or track passwords, our tool performs all generation directly in your browser using cryptographically secure random number generation.
Unlike some online generators that may log passwords, our tool never stores, transmits, or logs any generated passwords. Total privacy guaranteed.
Real-time entropy display shows the mathematical strength of your password. Higher entropy = exponentially harder to crack.
No registration, no limits, no ads. Generate unlimited passwords anytime, anywhere. Free forever.
Compatible with all modern browsers on desktop and mobile. No plugins or installations required.
Security experts recommend passwords of at least 16 characters. For highly sensitive accounts (banking, email), use 20+ characters for maximum protection.
Including uppercase, lowercase, numbers, and symbols dramatically increases password entropy. A 12-char password with all types is stronger than a 16-char lowercase-only password.
Store generated passwords in a reputable password manager (1Password, Bitwarden, LastPass). Never reuse passwords across sites.
Only use 'Exclude Similar Characters' if you're manually typing passwords frequently. The reduced character set slightly weakens entropy.
Extremely secure. We use window.crypto.getRandomValues(), the Web Cryptography API's method for cryptographically strong random number generation. This is the same method used by password managers and security-critical applications. All generation happens locally on your device with no network communication.
Entropy measures password unpredictability in bits. Each bit doubles the number of possible combinations. A password with 60 bits of entropy has 2^60 possible combinations. Higher entropy = harder to crack. Aim for 60+ bits (strong) or 80+ bits (very strong) for sensitive accounts.
Only if you'll be typing the password frequently by hand. Excluding similar characters (i, l, 1, L, o, 0, O) reduces confusion but slightly weakens the password by reducing the character set. For passwords stored in a password manager (recommended), don't exclude anything.
Minimum 12 characters for basic accounts, 16+ for important accounts, 20+ for highly sensitive accounts (banking, primary email, password manager master password). Longer passwords exponentially increase security. Use the maximum your service allows.
Yes. All password generation happens 100% client-side in your browser. Your passwords never touch our servers, are never logged, and are never transmitted anywhere. You can verify this by disconnecting from the internet—the tool still works. For extra paranoia, review the open-source code.
Three factors: length, character variety, and randomness. Long passwords (16+ chars) with uppercase, lowercase, numbers, and symbols, generated with true randomness (not dictionary words or patterns) are virtually uncrackable. This tool optimizes all three factors.