🛡️ 100% Browser Local Execution · Zero Upload Privacy · Instant Speed
Cryptographic Password, API Key & Passphrase Generator
Generate high-entropy passwords, 256-bit JWT/AES hex secrets, sk- API tokens, and diceware passphrases using WebCrypto CSPRNG.
📖 How to Use & Technical Guide
- Choose password length (8 to 128 chars) and character sets (Uppercase, Lowercase, Numbers, Symbols) or select a developer secret preset (256-bit Hex, Base64 Key, sk- API Token).
- View real-time Shannon entropy (bits) and brute-force crack time estimation.
- Click 'Regenerate Batch' or copy any generated credential with one click.
❓ Frequently Asked Questions
Why is WebCrypto CSPRNG safer than Math.random()?
Math.random() is a predictable pseudo-random number generator. Our tool uses window.crypto.getRandomValues(), which draws entropy directly from your OS kernel's cryptographic random source.