What is Password Generator?
A Password Generator is a security tool that generates randomized character strings using high-entropy random number generators to maximize resistance against brute-force attacks.
How to Use Password Generator
- 1Select password length (8 to 64 characters).
- 2Toggle character options: Uppercase (A-Z), Lowercase (a-z), Numbers (0-9), Symbols (!@#$%^&*).
- 3Optionally enable "Avoid Ambiguous Characters" (l, 1, I, O, 0).
- 4Click "Generate Password" or switch to "Memorable Passphrase" mode.
- 5Copy password to clipboard.
How Does Password Generator Work?
Employs the Web Cryptography API (`window.crypto.getRandomValues`) to select un-guessable character samples from chosen character sets.
Entropy (bits) = Password Length × log2(Character Pool Size)Practical Examples
High Security 16-Char Password
Length: 16, All character sets enabled
Frequently Asked Questions
Are generated passwords saved on your server?
NEVER. All passwords are generated locally in your browser using `window.crypto`. Zero password data is transmitted over the network or saved anywhere.
What makes a password strong?
Password strength relies on length and character randomness (entropy). A 16-character password combining letters, numbers, and symbols takes billions of years to crack with modern hardware.
What is a passphrase?
A passphrase combines multiple random words (e.g. "correct-horse-battery-staple"). They are easier to memorize while maintaining high cryptographic entropy.
What are ambiguous characters?
Characters like capital "I", lowercase "l", number "1", capital "O", and number "0" look identical in some fonts. Excluding them prevents copy/paste transcription errors.
Should I reuse passwords across websites?
No. Never reuse passwords. If one site suffers a breach, credential stuffing attacks compromise all accounts sharing that password.