Free Online Password Generator

Generate high-entropy random passwords using your browser's native cryptographic pseudo-random number generator.

Password Strength: -

Password Length 16

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

About Free Online Password Generator

Create strong, uncrackable passwords using hardware-backed cryptographic randomization. Customize length (6 to 64 characters), select allowed character sets (uppercase, lowercase, numbers, symbols), exclude visually ambiguous characters, and evaluate password entropy in real time.

How to Use Free Online Password Generator Online

Select Password Length

Adjust the slider to your desired character length (16+ characters recommended for high security).

Choose Character Types

Toggle uppercase letters (A-Z), lowercase letters (a-z), numbers (0-9), and special symbols (!@#$%^&*).

Exclude Ambiguous Glyphs

Optionally avoid confusing characters (l, 1, I, O, 0) to ensure readability on printed cards or screens.

Copy Secure Password

Inspect the live entropy rating and click Copy Password to securely paste into your password manager.

Key Features & Privacy Benefits

Cryptographic Randomness: Uses window.crypto.getRandomValues() to ensure generated passwords cannot be predicted by pseudo-random seed analysis.
Live Entropy Strength Meter: Calculates real-time Shannon entropy in bits, rating passwords from Weak to Very Strong.
Avoid Ambiguous Characters: Excludes easily confused characters like lowercase 'L', uppercase 'I', number '1', and letter 'O' for painless manual typing.
Zero Cloud Transmission: Your newly generated passwords exist solely in browser memory and are never transmitted across the network.

Frequently Asked Questions

How long should a strong password be?

Security standards (NIST and OWASP) recommend a minimum of 16 characters combining uppercase, lowercase, numbers, and symbols to resist brute-force dictionary attacks.

Are passwords generated by this tool recorded anywhere?

Never. The generator runs 100% on your device using client-side JavaScript Web Crypto. ASToolHub does not possess a database, cookies, or tracking servers.

What is password entropy?

Password entropy measures how unpredictable a password is in bits. Passwords with over 80 bits of entropy would take billions of years for modern supercomputers to crack.