About SecurePass Gen

SecurePass Gen is a free, fast, and privacy-first password generator that runs entirely in your web browser. Our mission is simple: make strong security the easiest choice for everyone.

Why we built this

Weak and reused passwords are still the number-one cause of account takeovers, according to every major breach report from Verizon, Google, and Microsoft. Yet many "free" password generators online either send data to servers, show intrusive ads, or use weak random number generators.

We built SecurePass Gen to demonstrate that a security tool doesn't have to compromise on either quality or privacy. Every password you generate here uses the browser's built-in crypto.getRandomValues() API — the same cryptographic primitive trusted for HTTPS and disk encryption.

What makes us different

• No accounts, no tracking of generated passwords. The generator runs 100% client-side.
• Cryptographically secure randomness. We never use Math.random(), which is not safe for security purposes.
• Open, auditable logic. The entropy calculation, strength meter, and crack-time estimates use published formulas.
• Works offline. Once the page has loaded, you can disconnect from the internet and the generator keeps working.
• Free, forever. No paywalls, no premium tier, no upsells.

How our strength meter works

We measure password strength in bits of entropy — a standard cryptographic metric. Entropy = password length × log₂(charset size). A random 16-character password using all character classes has roughly 100 bits of entropy, meaning an attacker would need up to 2¹⁰⁰ guesses to brute-force it.

Our crack-time estimates assume an offline attack capable of 10 billion guesses per second (a realistic figure for a well-funded attacker using modern GPUs). We also deduct entropy for common patterns like password, sequential characters, and repeated letters.

Contact

Found a bug, have a feature suggestion, or want to report a security concern? Please reach out — feedback is welcome. We take security reports seriously and respond to every legitimate message.