Password Generator
Generate strong, secure random passwords with customizable length, character sets, and bulk generation. Uses cryptographic randomness for maximum security.
Generated Password
Options
How to Use the Password Generator
- 1A secure password is generated automatically when you open the tool
- 2Use the length slider or number input to set your desired password length (4-128 characters)
- 3Toggle character sets on or off: uppercase (A-Z), lowercase (a-z), numbers (0-9), symbols (!@#$)
- 4Enable "Exclude 0OlI1" to remove ambiguous characters that look alike in some fonts
- 5Click "Regenerate" for a new password, or select a bulk count (5, 10, 20) to generate multiple passwords at once
- 6Click the copy button to copy any password to your clipboard
Frequently Asked Questions
How secure are the generated passwords?
Very secure. The generator uses crypto.getRandomValues(), a cryptographically secure random number generator built into your browser. This ensures passwords are truly unpredictable and suitable for any security-sensitive application.
What password length should I use?
For most purposes, 16 characters is a strong default. For high-security accounts, use 20+ characters. The strength meter and entropy display help you gauge security — aim for at least 60 bits of entropy (rated "Good") and ideally 80+ bits ("Strong").
What does "entropy" mean for passwords?
Entropy measures password randomness in bits. Higher entropy means more possible combinations an attacker would need to try. For example, a 16-character password using all character types has ~105 bits of entropy, making brute-force attacks computationally infeasible.
Why exclude ambiguous characters?
Characters like 0 (zero) and O (letter O), or l (lowercase L) and 1 (one), look nearly identical in many fonts. Excluding them prevents confusion when passwords need to be read or typed manually, such as from a printout or phone screen.
Is my password data sent to a server?
No. All password generation happens entirely in your browser using client-side JavaScript and the Web Crypto API. Your passwords are never transmitted, stored, or logged anywhere. Close the tab and they're gone.
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