Free Developer Tool — 100% Client-Side

Password Generator

Generate strong, secure passwords with customizable length and character sets.

Password Length 20

4 128

Character Options

A–Z a–z 0–9 !@#$%

Generated Password

What Makes a Password Secure?

A secure password is the first line of defense against unauthorized access to your online accounts. The most strong passwords are long, random, and contain a mix of character types. Using a free password generator ensures you create truly random passwords that are resistant to brute-force attacks, dictionary attacks, and common guessing techniques. Our online password generator creates cryptographically secure passwords using the Web Crypto API, making each random password unique and unpredictable.

Password Strength Guidelines

Use at least 12 characters — Longer passwords are exponentially harder to crack. Aim for 16-20 characters when possible.
Mix character types — Combine uppercase letters, lowercase letters, numbers, and symbols to maximize entropy.
Avoid dictionary words — Do not use real words, common phrases, or keyboard patterns like qwerty or 123456.
Never use personal information — Avoid names, birthdates, addresses, or any information that could be found on social media.
Use a unique password for every account — Never reuse passwords across different websites or services.

How to Use This Password Generator

Using our secure password generator is simple. First, adjust the password length using the slider — longer passwords provide stronger security. Next, select the character types you want included: uppercase letters (A–Z), lowercase letters (a–z), numbers (0–9), and symbols (!@#$%). For maximum security, enable all four options. Click Generate Password to create a new strong random password. Review the strength meter to see how secure your password is, then use the Copy button to save it to your clipboard.

Tips for Managing Generated Passwords

Once you generate a strong password, use a password manager like 1Password, Bitwarden, or Apple Keychain to store it securely. Password managers encrypt your vault and can auto-fill credentials on websites, making it easy to use unique, complex passwords everywhere. Enable two-factor authentication (2FA) on all accounts that support it for an additional security layer. Never write passwords on sticky notes, save them in plain text files, or share them through email or messaging apps.

How to Do This in Code

function generatePassword(len) {
  const chars = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789!@#$%^&*()';
  return Array.from(crypto.getRandomValues(new Uint32Array(len)))
    .map(v => chars[v % chars.length]).join('');
}

import secrets
import string
chars = string.ascii_letters + string.digits + '!@#$%^&*()'
password = ''.join(secrets.choice(chars) for _ in range(16))

import "crypto/rand"

func genPassword(n int) string {
  chars := []byte("ABC...xyz0129!@#$")
  b := make([]byte, n)
  rand.Read(b)
  for i := range b { b[i] = chars[b[i] % byte(len(chars))] }
  return string(b)
}

openssl rand -base64 12
< /dev/urandom tr -dc 'A-Za-z0-9!@#$' | head -c16

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Password Generator FAQ

How secure are these passwords?

Passwords are generated using your browser's cryptographically secure random API — the same standard used for encryption keys.

Are passwords saved or stored?

No. Passwords are generated client-side and never sent to any server. Once you leave the page they're gone.