PASSWIZARD.NET
Generator Methodology

What is a password generator?

A password generator is a tool that produces strong, random passwords using cryptographically secure random number generators. Unlike human-chosen passwords, generated passwords contain no predictable patterns, personal information or dictionary words — which makes them resistant to brute-force and dictionary attacks.

  • Cryptographic randomness via the Web Crypto API — not Math.random().
  • Runs entirely in your browser — nothing is sent to a server.
  • NIST-aligned: long, unique and high-entropy passwords.

Cryptographic Randomness

Uses the Web Crypto API for true random numbers, not pseudo-random numbers like Math.random(). This meets standards for banking and government applications.

Entropy Calculation

Each character set contributes to entropy: uppercase (26), lowercase (26), numbers (10), symbols (32). A 12-character password with all sets has 94^12 ≈ 4.7 × 10^23 combinations.

Security Validation

Passwords are validated against common patterns and dictionary attacks. No sequential characters, repeated patterns, or weak combinations are generated.

Standards aligned

Criteria for strong passwords

A strong password is more than random characters. These six criteria determine how resistant a password is to modern attacks:

01

Length

The longer a password is, the harder it is to crack (e.g., by brute-force attacks). A password should be at least 12 characters long.

02

Complexity

Use a combination of uppercase letters (A-Z), lowercase letters (a-z), numbers (0-9), and special characters (!, @, #, $, %, etc.).

03

No personal information

No name, date of birth, place of residence, or simple keyboard patterns like 123456, qwerty, password, admin, hello123.

04

No reused password

Use a unique password for each website/service. If one service is compromised, the others are not automatically at risk.

05

Regular updates

Passwords should be changed regularly – especially when suspecting a data breach.

06

Password manager

Use a password manager that stores secure random passwords (e.g., in the browser).

Examples and Comparisons

Weak vs. strong passwords

The difference between a weak and a strong password is measured in orders of magnitude of time. Here are real examples:

Weak (do not use)

  • password123
  • admin
  • 12345678
  • qwerty123
  • myName2024

These passwords can be cracked in seconds. 'password123' appears in over 5 million data leaks.

Strong (generator output)

  • K9#mP2@vL8&nR
  • F$7wQ4!xN9^bT
  • H@2kM5#pS8&vX

These passwords have an entropy of 78.6 bits and would take 1.7 million years to crack at 10 billion attempts/second.

Related tools

Complete your security setup

Combine these free tools for end-to-end protection. Everything runs locally or with strict privacy guarantees.

Password Leak Check

Check passwords against Have I Been Pwned with k-anonymity — only the first 5 SHA-1 chars are sent.

Check leaksWiFi QR Code Generator

Generate a WiFi QR code so guests join your network without typing the password.

Create WiFi QR2FA Guide

Protect your accounts with two-factor authentication — TOTP, push, and hardware keys compared.

Learn 2FA
Frequently Asked Questions

Frequently asked questions

The most common questions about password security — check all answers on our FAQ page.

Why should I use a password generator?

Humans are bad at producing true randomness. Even 'creative' passwords follow predictable patterns and are vulnerable to dictionary and brute‑force attacks. A cryptographic generator creates passwords with true randomness and mathematically provable security.

How secure are the generated passwords?

Our passwords use the Web Crypto API for cryptographically secure random numbers. A 12‑character password with all character sets has 78.6 bits of entropy and would take about 1.7 million years to crack at 10 billion attempts per second. This meets banking and government security standards.

Can I use the same password for multiple websites?

No – that's extremely risky. If one service suffers a breach, attackers can try your password on all other accounts. Every website should have a unique, strong password. Use a password manager to handle hundreds of unique passwords.

How often should I change my passwords?

Guidance has changed: instead of frequent rotation without cause, change passwords when compromise is suspected. Focus on strong, unique passwords and two‑factor authentication. For critical accounts (banking, email) every 90 days.

What’s better: a long or a complex password?

Length beats complexity. A 20‑character password using only lowercase letters is safer than an 8‑character one with symbols. Best is long AND complex: 12+ characters with mixed character sets for optimal security.

Are password managers secure?

Modern password managers use AES‑256 encryption and a zero‑knowledge architecture. Your master password is never transmitted to servers. Even if a server is hacked, your data remains safe because it is stored only in encrypted form. The risk is far lower than using weak or reused passwords.

What should I do if my password is found in a data leak?

1) Change the password immediately, 2) Enable two‑factor authentication, 3) Check all accounts with similar passwords, 4) Monitor credit card and bank transactions, 5) Enable security alerts for other services.

Can I store passwords in my browser?

Browser password managers are better than nothing, but less secure than dedicated tools. They are more vulnerable to malware, phishing and browser exploits. For maximum security, use a dedicated password manager with additional encryption.

How do I create secure passwords for Wi‑Fi?

Use WPA2 or WPA3 on your router and choose a long, random key—at least 16 characters, ideally 20+, mixing letters, numbers, and symbols. Avoid dictionary words and personal data. Generate a strong secret with this page, enter it in your router admin, then share it with guests as a QR code instead of reading it out loud.

Open the Wi‑Fi QR code generator