No upload, 100% local, no account

Password Generator

Generate strong passwords with uppercase, lowercase, digits and symbols. Exclude ambiguous characters. Bulk generation. Uses crypto.getRandomValues for maximum entropy.

How Password Generator works

Generate strong, random passwords using the Web Crypto API's crypto.getRandomValues, cryptographically secure randomness, not a predictable pseudo-random algorithm. Set your desired length, choose which character classes to include (uppercase, lowercase, digits, symbols), and get a password instantly.

16 characters with mixed classes give very high entropy for most accounts, while 24 or more suit high-value targets like encryption keys or root accounts. Batch mode generates many at once, each with fresh randomness.

Frequently asked questions

Are my files uploaded to a server?

No. Every operation runs inside your browser tab using JavaScript and WebAssembly. Your file is read into memory on your own device, processed there, and the result is offered as a local download. Nothing is transmitted to Sunasty or any third party. You can verify it yourself: open your browser DevTools, go to the Network tab, and watch, no request carries your file.

Is the randomness truly secure?

Yes. Passwords are generated with crypto.getRandomValues, the browser's cryptographically secure random number generator, which is suitable for security-sensitive use. It is not Math.random().

Can I generate multiple passwords at once?

Yes. You can request a batch of passwords in one click. Each one is independently generated with fresh randomness.

How long should my password be?

For most accounts, 16 characters with mixed character classes gives very high entropy. For high-value targets (encryption keys, root accounts) prefer 24 or more characters.

Does it work offline?

Yes, once the page has loaded. Because the processing happens on your device, you can disconnect from the network and the tool keeps working. This is the clearest proof that your data never leaves your machine.

Is it free? Do I need an account?

It is completely free and requires no sign-up. There are no watermarks, no daily limits and no tracking cookies needed to use the tool.