Secure Password Generator
Instantly generate strong, random passwords or memorable passphrases. Analyze password strength, entropy, and estimated crack time locally.
Customize Settings
Security Analysis
No PasswordAnalysis Checklist
Local & Private: This password generator is powered 100% locally by Javascript. All computations, calculations, and randomness are handled inside your web browser. Nothing you enter, generate, or click is uploaded or sent over the network.
How to use Secure Password Generator
Choose Generator Mode
Select standard Random Password, memorable Memorable Passphrase, or quick numeric PIN code based on your needs.
Customize Options
Adjust the length slider, toggle uppercase, lowercase, numbers, and symbols, or pick a custom word separator.
Check Strength Metrics
Review the real-time visual strength gauge, entropy calculation, and estimated crack time for your password.
Copy Securely
Click the copy button to copy the password. All generation and analysis is done 100% locally in your browser.
Frequently Asked Questions
Is it safe to generate passwords on this website?
Yes, 100%. This tool runs entirely client-side in your web browser. No data is sent to our servers, and your generated passwords are never saved or transmitted over the internet.
What makes a password secure?
A secure password combines length and complexity. We recommend a minimum length of 12-16 characters, including a mix of uppercase and lowercase letters, numbers, and symbols. The longer the password, the harder it is to crack.
What is a Memorable Passphrase?
A passphrase uses random, friendly dictionary words grouped together (e.g. 'correct-horse-battery-staple'). Passphrases are highly secure because of their length, but they are much easier for humans to remember than random strings of characters.
What is Password Entropy?
Password entropy measures the randomness of a password in bits. Higher entropy means a password is exponentially harder for a computer to guess. Passwords with over 80 bits of entropy are generally considered exceptionally strong.
Can I test my own existing passwords here?
Yes. You can paste or type any password into the input box, and the strength analyzer will calculate its strength, entropy, and crack time in real-time.
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