Secure Password Generator
Cryptographic Security Standards
Web Crypto API
Standard JavaScript Math.random() is predictable and unsafe for security keys. We utilize
the browser's native Web Crypto API to generate true cryptographically secure
pseudo-random values (CSPRNG).
100% Client-Side Privacy
Your generated passwords never touch a server, a database, or a network request. The entire generation process happens locally inside your browser's RAM and is destroyed the moment you refresh the page.
Guaranteed Character Inclusion
Many generators use pure randomness, meaning a 12-character password might randomly lack a symbol even if requested. Our algorithm ensures at least one of every selected character type is mathematically guaranteed.
Entropy & Length
Length defeats brute force faster than complexity. A 16-character password using only lowercase letters contains more entropy (randomness) and takes exponentially longer to crack than an 8-character password with complex symbols.
Fisher-Yates Shuffling
To prevent predictable patterns (such as passwords always starting with a guaranteed uppercase letter), our script uses a cryptographically seeded Fisher-Yates shuffle to completely randomize the final character positions.
Air-Gapped Ready
Because the logic relies strictly on native browser APIs without external dependencies, this generator can be saved as a single HTML file and run on an offline, air-gapped machine for maximum physical security.