Frequently Asked Questions
No. This tool runs entirely in your browser using local JavaScript. Your password is never transmitted, logged, or stored anywhere. You can even disconnect from the internet and it will still work perfectly.
Entropy measures the unpredictability of a password in bits. It is calculated as log₂(pool_size ^ length). A 12-character password using all character types has roughly 79 bits of entropy. Each additional character adds log₂(pool_size) more bits. 60+ bits is considered strong; 80+ bits is very strong for most purposes.
A strong password combines length (12+ characters is the minimum recommended today), variety (using uppercase, lowercase, numbers, and symbols expands the character pool), and unpredictability (avoiding dictionary words, names, dates, or keyboard patterns like "qwerty"). Length is the single most impactful factor — each additional character multiplies the difficulty exponentially.