Is this password generator safe to use?

Absolutely. All password generation happens entirely in your browser using the Web Crypto API. Your passwords are never transmitted to our servers, never logged, and never stored. We have zero knowledge of what passwords you generate.

How does the cryptographically secure generation work?

We use the browser's built-in crypto.getRandomValues() API, which accesses your operating system's entropy pool—random data gathered from hardware timing, mouse movements, and other unpredictable sources. This is the same technology banks and governments use.

What password length should I use?

For general accounts: 12-16 characters. For banking and sensitive accounts: 20+ characters. Each additional character exponentially increases security—a 20-character password is billions of times stronger than a 12-character one.

What is password entropy?

Entropy measures password randomness in bits. Higher entropy = harder to crack. Our tool calculates entropy based on length and character diversity. 80+ bits is strong, 100+ bits is very strong, 128+ bits is military-grade.

Can generated passwords be cracked?

Theoretically any password can be cracked given infinite time, but a 16-character random password would take centuries to crack with current technology. Our strength indicator shows estimated crack times based on modern GPU capabilities.

What are 'similar characters' and why exclude them?

Characters like O (letter) and 0 (zero), or I (uppercase i), l (lowercase L), and 1 (one) look identical in many fonts. Excluding them prevents confusion when manually typing passwords.

What's the difference between password and passphrase?

Passwords use random characters (K9#mP2$v). Passphrases use random words (correct-horse-battery). Passphrases are easier to memorize while remaining secure due to length. Both are generated cryptographically secure.

Why shouldn't I reuse passwords?

If one service is breached and your password exposed, attackers can access all your other accounts using the same password. This 'credential stuffing' attack is extremely common. Use unique passwords for every account.

Tools

Password Generator

Free online password generator. Create strong, secure, random passwords with customizable length (8-128 characters) and character sets. Features include cryptographically secure generation using Web Crypto API, real-time strength indicator with entropy calculation, exclude similar characters, memorable passphrase mode, and password history. All processing runs locally in your browser — your passwords never leave your device.

Features

✓Cryptographically secure generation using Web Crypto API's CSPRNG — the same technology used by banks and government agencies
✓Real-time strength analysis with entropy calculation and estimated crack time based on modern GPU capabilities
✓Customizable character sets — choose uppercase, lowercase, numbers, and symbols to meet specific site requirements
✓Exclude similar characters option to avoid confusion between O/0, I/l/1 when manually typing passwords
✓Memorable passphrase mode using random word combinations — perfect for master passwords you need to memorize
✓Password history saves last 10 generated passwords in browser session storage for quick access
✓Flexible length control from 8 to 128 characters with quick presets for common lengths
✓100% client-side processing — passwords never travel over network or touch any server

How to Use

1Select your desired password length using the slider (recommended: 16+ characters for maximum security)
2Choose which character types to include: uppercase, lowercase, numbers, and/or symbols
3Toggle 'Exclude Similar' to avoid confusing characters like O/0 and I/l/1
4Switch to 'Passphrase' mode for memorable word-based passwords
5Click 'Generate' to create a new random password instantly
6Use the copy button to copy the password to your clipboard
7View password history to access previously generated passwords
8Check the strength indicator to ensure your password meets security requirements

Frequently Asked Questions

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