Password Generator

About Password Generator

Create strong, secure, and random passwords with this free password generator tool. Customize your password with various options including length, character types, and complexity. All passwords are generated locally in your browser - nothing is sent to any server, ensuring complete privacy and security.

How to Use This Password Generator

1. Set Length: Use the slider to choose your password length (8-64 characters). Longer passwords are exponentially more secure.
2. Select Character Types: Check the boxes for character types you want to include. Enable all for maximum security.
3. Advanced Options: If needed, exclude ambiguous characters (0, O, l, 1) to avoid confusion when typing.
4. Generate: Click "Generate Password" to create a new random password with your specifications.
5. Copy & Use: Click "Copy Password" to copy it to your clipboard, then paste it where needed.

Password Security Best Practices

• Length Matters Most: A 16-character password with only lowercase letters is stronger than an 8-character password with all character types. Aim for 16+ characters.
• Mix Character Types: Combine uppercase letters, lowercase letters, numbers, and symbols to maximize entropy and resist brute-force attacks.
• Avoid Personal Info: Never use names, birthdays, pet names, addresses, or common words. These are the first things attackers try.
• Unique Passwords: Use completely different passwords for different accounts. If one site gets breached, attackers won't access your other accounts.
• Use a Password Manager: Store passwords securely in a password manager like Bitwarden, 1Password, or LastPass. Don't write them on paper or store in plain text files.
• Enable 2FA: Add two-factor authentication whenever available. Even if someone gets your password, they still can't access your account without the second factor.
• Change Compromised Passwords: If a service you use gets breached, change your password immediately. Check haveibeenpwned.com to see if your accounts have been compromised.

Understanding Password Strength

Password strength is measured in entropy—the amount of unpredictability. An 8-character password with only lowercase letters has about 37 bits of entropy, while a 16-character password with all character types has over 100 bits. Modern computers can try billions of password combinations per second, so strong entropy is essential.

Common Password Mistakes to Avoid

• Dictionary Words: "password123" or "welcome2024" are cracked instantly by dictionary attacks.
• Keyboard Patterns: Sequences like "qwerty" or "12345678" are extremely common and easily guessed.
• Simple Substitutions: Replacing 'a' with '@' or 'o' with '0' doesn't fool modern password crackers.
• Password Reuse: Using the same password across multiple sites is the #1 cause of account takeovers.
• Too Short: Anything under 12 characters is vulnerable to brute force attacks with modern hardware.

When to Generate New Passwords

• Creating a new online account on any website or service
• After a data breach or security incident at a service you use
• When changing passwords during regular security audits (every 6-12 months for critical accounts)
• Setting up WiFi networks, router admin panels, or smart home devices
• Creating temporary passwords for guest accounts or shared resources
• Securing sensitive files, encrypted drives, or password-protected documents

Features of This Tool

• Adjustable Length: Generate passwords from 8 to 64 characters long
• Customizable Character Sets: Include or exclude uppercase, lowercase, numbers, and symbols
• Ambiguous Character Filter: Exclude characters like 0, O, l, 1 that look similar
• Password Strength Indicator: Visual feedback on password security level
• One-Click Copy: Copy generated passwords to clipboard instantly
• Generation History: View recently generated passwords during your session
• 100% Client-Side: All generation happens in your browser for complete privacy
• No Storage: Passwords are never saved or transmitted anywhere

How Password Generation Works

This tool uses JavaScript's Crypto API (crypto.getRandomValues()) to generate cryptographically secure random numbers. Unlike the old Math.random() method, crypto.getRandomValues() uses system-level entropy sources to produce truly unpredictable random values suitable for security-critical applications like password generation.

Privacy & Security Guarantee

Your generated passwords never leave your device. All randomness and password creation happens entirely in your browser using client-side JavaScript. We don't collect, store, or transmit any passwords. This tool works completely offline after the page loads, ensuring absolute privacy for your sensitive security credentials.