Free Security & Privacy Tools
Free security and privacy tools that generate strong, random values without ever sending them anywhere. Create cryptographically secure passwords (with control over length and character sets) and version-4 UUIDs, generated in your browser using the Web Crypto API — the same secure randomness source browsers use for cryptography. Because generation happens entirely on your device, the values are never transmitted to or stored by us, so a password you create here is seen only by you. Each tool explains how its randomness works and its practical limits. Remember that a value's real-world security also depends on how you store and use it, so pair a strong generated password with a reputable password manager.
Which tool should you use?
- Password Generator
- Create a strong, random password to a length and character set you choose.
- UUID Generator
- Generate one or many random UUIDs (v4).
Generate strong, random passwords with the character types and length you choose. They’re created with cryptographically secure randomness and never leave your browser.
Generate random version-4 UUIDs — one at a time or in bulk — and copy them with a click. They’re created with secure randomness in your browser.
Related guides
Frequently asked questions
Are the generated passwords and UUIDs secure?
Yes. They use the browser's cryptographically secure Web Crypto API (crypto.getRandomValues), not the predictable Math.random.
Is my generated password sent anywhere?
No. Passwords are created entirely in your browser and are never transmitted or stored.
What UUID version is generated?
Version 4 (random) UUIDs — the most common general-purpose identifier format.