Password Generator

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Generate strong, random passwords locally in your browser.

Length 16

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Uppercase (A-Z) Lowercase (a-z) Numbers (0-9) Symbols (!@#$%)

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Code Examples

How to generate secure random strings in various languages.

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// Generate cryptographically secure random string (Node.js 19+ or Browsers)
function generateRandomString(length) {
    const chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
    let result = "";
    const randomValues = new Uint32Array(length);
    crypto.getRandomValues(randomValues);
    
    for (let i = 0; i < length; i++) {
        result += chars[randomValues[i] % chars.length];
    }
    return result;
}

console.log(generateRandomString(16));

import secrets
import string

def generate_password(length=16):
    # 'secrets' is preferred over 'random' for passwords
    alphabet = string.ascii_letters + string.digits
    password = ''.join(secrets.choice(alphabet) for i in range(length))
    return password

print(generate_password())

import java.security.SecureRandom;

public class PasswordGen {
    public static void main(String[] args) {
        String chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
        SecureRandom random = new SecureRandom();
        StringBuilder sb = new StringBuilder();
        
        for (int i = 0; i < 16; i++) {
            int randomIndex = random.nextInt(chars.length());
            sb.append(chars.charAt(randomIndex));
        }
        
        System.out.println(sb.toString());
    }
}

using System;
using System.Security.Cryptography;

public class Program {
    public static void Main() {
        // RandomNumberGenerator is cryptographically secure
        var bytes = new byte[16];
        RandomNumberGenerator.Fill(bytes);
        
        // Convert to Base64 (simple and secure)
        string password = Convert.ToBase64String(bytes);
        Console.WriteLine(password);
    }
}

package main

import (
	"crypto/rand"
	"encoding/base64"
	"fmt"
)

func main() {
	b := make([]byte, 12) // generates 16 chars in base64
	_, err := rand.Read(b)
	if err != nil {
		panic(err)
	}
	fmt.Println(base64.URLEncoding.EncodeToString(b))
}