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Generator Tools Browser-Only / 100% Private

Password Generator

Generate cryptographically strong, random passwords using browser Web Cryptography API with entropy scoring.

Very Strong Entropy: ~95 bits
16

What is the Password Generator?

Create highly secure, cryptographically random passwords to safeguard your online accounts against brute-force and dictionary attacks. Powered exclusively by your operating system's native cryptographic random number generator (window.crypto.getRandomValues), it provides granular controls for length, character pools, exclusion of visually ambiguous characters, and real-time entropy estimation in bits.

How to Use This Tool

  1. Drag the length slider to choose your desired password length (16 to 32 characters is strongly recommended by NIST).
  2. Select which character sets to include: Uppercase (A-Z), Lowercase (a-z), Numbers (0-9), and Symbols (!@#$%^&*).
  3. Leave "Exclude Ambiguous" enabled to prevent visual confusion between 0 and O, or 1 and l.
  4. Click "Re-Generate" to create a fresh password.
  5. Click "Copy Password" to copy directly to your clipboard.

Examples & Use Cases

High-Security 16-Character Password

Input: Length: 16 | All character sets enabled
Result: kR9#mP2$xL8!vT4& (Estimated entropy: ~95.2 bits — Rated "Very Strong")

Ultra-Secure 24-Character Password

Input: Length: 24 | All character sets enabled
Result: q7$Yv9!mK3#pL8*wX2&zN5@c (Estimated entropy: ~142.8 bits — Bulletproof against offline brute-force)

Formula & Technical Specifications

Information entropy in bits is calculated as: E = L * log2(R), where L is password length and R is the size of the active character pool. Ratings align with NIST SP 800-63B guidelines: >= 80 bits is Very Strong, >= 60 bits is Strong, >= 40 bits is Moderate, and < 40 bits is Weak.

Limitations, Edge Cases & Best Practices

A strong password must still be paired with two-factor authentication (2FA) and a reputable password manager for complete online account security.

Privacy & Client-Side Execution

CRITICAL SECURITY: Generated passwords are created purely in your browser and are NEVER transmitted over the internet or saved anywhere.

Frequently Asked Questions

Can Membuat or anyone else see the passwords I generate?

Never. The generator runs 100% inside your browser using the Web Cryptography API. There is zero network communication during password generation.

What makes a password strong according to security standards?

Length is the primary factor in resisting brute-force attacks. A 16-character password with mixed characters yields over 95 bits of entropy, requiring billions of years to crack with modern supercomputers.