🔐 Strong Password Generator

What is a Strong Password Generator?

A strong password generator creates secure, random passwords that are difficult to guess or crack. This tool lets you customize length and character types while showing you the entropy score—a measure of password strength. Everything runs locally in your browser, so your passwords never leave your device.

How to Use

1. Choose your password length (4–64 characters).
2. Select which character types to include (uppercase, lowercase, numbers, symbols).
3. Optionally exclude similar or ambiguous characters for readability.
4. Click Generate to create a new password.
5. Copy your password with one click.

Why Use This Tool?

• ✅ Entropy scoring — Know exactly how strong your password is
• ✅ Customizable — Control length and character types
• ✅ Private — Everything runs locally, no uploads
• ✅ Free & unlimited — No sign-up, no limits

Understanding Entropy

Entropy measures password strength in bits. Higher bits = harder to crack:

• 0–35 bits: Weak — crackable in seconds
• 36–60 bits: Fair — could be cracked in hours/days
• 61–80 bits: Good — takes years to crack
• 81+ bits: Excellent — virtually uncrackable

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Frequently Asked Questions

Is this password generator secure?
Yes. It uses the browser's built-in crypto.getRandomValues() to generate cryptographically secure random numbers.

What length should I use?
We recommend 16 characters or more for most accounts. For high-security accounts (email, banking), use 20–24 characters.

Does this tool store my passwords?
No. Everything runs locally in your browser. Your passwords never leave your device. See our Privacy Policy.

What's the difference between excluding similar and ambiguous characters?
Similar characters (i, l, 1, o, 0) look alike and can be confused. Ambiguous characters ({ } [ ] / \ ' " ~ , ; .) can cause issues in some systems.