100% Native Web Crypto API · High Entropy · Pure Client-Side

Secure Password Generator & Entropy Checker

Generate high-entropy random passwords with instant security metrics. Filter ambiguous characters with zero server interaction.

Password Strength: Very Strong

Entropy: 98.4 Bits · Crack Time: Millions of Years

Password Length: 16

6 Chars 16 (Recommended) 32 64 Chars

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

Exclude Ambiguous (1, l, I, 0, O, o)

Presets:

1 CSPRNG Cryptographic Random

Uses native window.crypto.getRandomValues entropy source instead of predictable pseudo-random math.

2 Entropy Greater than 80 Bits

16+ mixed characters provide over 90 bits of entropy, safe against brute-force rainbow table attacks.

3 Unique Passwords & Managers

Use unique passwords for each service with Bitwarden or 1Password to eliminate credential stuffing risks.

Q: Do you record or store the passwords I generate?

Never. This is a 100% static client-side web application with zero backend databases. It functions offline in airplane mode.

Q: Why exclude ambiguous characters?

Characters like 1, l, I, 0, and O look identical in many fonts. Excluding them prevents manual transcription errors.