About PassGen — Free, Privacy-First Security Tools

PassGen is a free, privacy-first suite of password generation and security analysis tools. Every tool on this site runs 100% in your browser using the Web Crypto API — your passwords, keys, and data never leave your device.

Our Mission

We believe everyone deserves access to strong security tools without surveillance, sign-ups, or paywalls. Password security shouldn't require trusting a third party with your most sensitive data.

How It Works

All password generation uses crypto.getRandomValues() — the same cryptographically secure random number generator used for TLS encryption. No server-side processing, no API calls (except the k-anonymity based Leak Checker), no tracking.

What We Offer

23 security tools — password generators, strength analyzers, hash generators, encoding tools, and more
Zero data collection — no accounts, no cookies, no analytics that track you
Works offline — once loaded, tools work without an internet connection
Mobile-friendly — every tool is designed for thumb-friendly use on any device

Technical Standards

Cryptographic randomness: Web Crypto API (crypto.getRandomValues())
Password strength scoring: entropy-based analysis with pattern detection
Leak checking: Have I Been Pwned k-anonymity model (only first 5 chars of SHA-1 hash sent)
Target performance: Lighthouse score 95+, LCP < 1.5s, CLS < 0.05

Contact

Have questions, feedback, or security concerns? Reach out on our Contact page.