Secure Password & Passphrase Generator
Build highly secure passwords or memorable word-based passphrases using local cryptographically secure entropy.
100% Client-Side (No data leaves your device)
Generated Results
User Guide: Passwords & Entropy Strength
Entropy and Password Security
Password security is measured in Entropy bits, representing the amount of randomness in a string. Higher entropy makes cracking via brute-force computational searches exponentially more difficult:
- Weak (< 50 bits): Easily crackable in minutes or hours.
- Medium (50 - 75 bits): Secure against standard attacks, but vulnerable to specialized hardware clusters.
- Strong (> 75 bits): Takes trillions of years to brute-force using current hardware systems.
Why Memorable Passphrases?
As popularized by standard security guides, human memory struggle to recall strings like `p&W9%q@L1$m`. In contrast, a passphrase concatenating several random words (e.g. `correct-horse-battery-staple`) creates a highly secure, high-entropy password that is extremely easy to visualize and memorize.