Strong Password Generator
Generate secure, random passwords up to 64 characters. Check password strength and entropy. Free online tool, 100% private, no server tracking.
What is the Strong Password Generator?
Generate secure, random passwords instantly. Customize length, characters, and check password strength entropy. 100% client-side. Built for optimal performance, this tool executes client-side directly in your browser without uploading your sensitive data to external servers.
How to use the Strong Password Generator
- Set your desired password length using the slider (recommended: 16–32 characters).
- Toggle character sets: Uppercase (A-Z), Lowercase (a-z), Numbers (0-9), and Symbols (!@#$%^&*).
- Enable 'Exclude Ambiguous Characters' (like 0, O, l, 1) if you plan to manually read or type the password.
- Click 'Generate' to create a password using hardware-backed cryptographic entropy, and check the entropy strength rating.
Example: Generating a High-Entropy 20-Character Password
Length: 20 | Sets: Upper, Lower, Numbers, Symbols
k9#vF7$mP2!xL8@wQ4*z
Offers over 128 bits of cryptographic entropy, resisting brute force and dictionary attacks.
Technical Guide & Privacy Assurance
Passwords generated here are never transmitted across the network or logged to any server. Generate your password, paste it into your password manager, and close the tab.
Frequently Asked Questions
Is this password generator secure?+
Yes. All passwords are generated locally on your device using the browser's native crypto API. We never store or transmit your passwords.
What makes a password strong?+
A strong password is long (at least 12-16 characters) and uses a mix of uppercase, lowercase, numbers, and symbols to maximize entropy.
What is password entropy?+
Entropy measures how unpredictable a password is. A higher pool of available characters (e.g., adding symbols) and a longer length exponentially increases the time it would take to crack.