Password Generator
Generate strong random passwords and memorable passphrases. Fully offline, private, and configurable.
About this tool
Create strong, cryptographically random passwords with full control over length (4-128 chars), character sets (uppercase, lowercase, numbers, symbols), ambiguous character exclusion, and custom symbol sets. Switch to passphrase mode for memorable multi-word phrases with configurable separators. Includes a built-in strength meter using entropy calculation, a batch mode to generate multiple passwords at once, and a history panel that stores your last 10 passwords locally with tap-to-reveal. One-tap copy to clipboard with toast feedback. Everything runs in your browser — no data ever leaves your device.
Details
- Category
- Utilities
- Version
- 1.0.0
- Size
- 38 KB
- Updated
- Jun 2026
Frequently Asked Questions
Are these passwords truly random?
Yes. We use the Web Crypto API (crypto.getRandomValues) which is a cryptographically secure pseudorandom number generator (CSPRNG). This is the same API that browsers use for encryption key generation. Your passwords are generated entirely on your device.
Which mode should I use — password or passphrase?
Passwords are best when you're copy-pasting or using a password manager — they're shorter and more compact. Passphrases (like "correct-horse-battery-staple") are easier to remember and type manually, making them great for master passwords, WiFi passwords, or anything you need to type often.
How is password strength measured?
We calculate entropy in bits based on the character set size and password length (for passwords) or dictionary size and word count (for passphrases). Higher bits = stronger. The color bar and label give you at-a-glance feedback: green is good, teal is very strong.
What are ambiguous characters and why exclude them?
Ambiguous characters are ones that look similar in many fonts: 0 (zero) and O (capital o), 1 (one) and l (lowercase L) and I (capital i). Excluding them helps avoid reading mistakes when you need to type the password manually from a screen or printed page.
Where is my password history stored?
Only in your browser's localStorage. The last 10 passwords are saved locally. Nothing is synced to our servers. Clear your history anytime with one tap, or erase your browser data to remove everything permanently.
