Secure Password Generator

Generate cryptographically strong passwords.

Generated Password:

Generate password...

Length: 20

Uppercase (A-Z) Lowercase (a-z) Numbers (0-9) Symbols (!@#$) Exclude similar (il1Lo0O)

About Secure Password Generator

Cryptographically secure password generator utilizing the Web Cryptography API (crypto.getRandomValues) with customizable entropy, character sets, and ambiguous character filtering.

Key features

High-entropy pseudo-random generation backed by operating system hardware entropy.
Granular character set controls: uppercase, lowercase, numeric digits, and specialized ASCII symbols.
Ambiguous character exclusion option (filters confusing glyphs like 1, l, I, 0, O).
Instant password strength calculation and Shannon entropy estimation in bits.

How to use

Set Password Length: Choose your target character length (16+ characters recommended for high security).
Configure Character Pools: Toggle uppercase letters, numbers, symbols, and ambiguous character exclusions.
Generate and Copy Password: Click "Generate" to compute fresh passwords and copy them safely to your clipboard.

FAQ

Are passwords generated by this tool truly random?

Yes, it employs crypto.getRandomValues(), a CSPRNG that pulls entropy directly from the OS kernel, avoiding predictable Math.random() seeds.

What password length is considered secure against brute force?

A random 16-character password with mixed characters yields approximately 95 bits of entropy, requiring billions of years to brute-force.

Does this generator store or send passwords over the internet?

No, passwords exist solely in client browser memory and are never transmitted to any external server.

Why should I exclude ambiguous characters?

Excluding glyphs such as 1, l, I, 0, and O prevents user entry errors when passwords must be transcribed manually from display screens.

Got Feedback or Feature Requests?

Help us enhance VelnoxLabs developer utility standards. Share your feedback below!