What makes a password strong?
Strength comes from entropy — how many possible combinations an attacker would need to try. Length matters more than complexity: a 16-character password from a large character set is far harder to brute-force than an 8-character one, even with symbols. Aim for at least 12–16 characters mixing case, digits, and symbols.
Why cryptographic randomness matters
This generator uses crypto.getRandomValues(), the Web Crypto API's cryptographically secure random number source — not Math.random(), which is predictable and unsuitable for anything security-sensitive. Every character is chosen independently from your selected character sets.
Frequently asked questions
Is it safe to generate passwords online?
It's safe with this tool specifically because generation happens entirely in your browser — the password is never transmitted anywhere. Avoid tools that generate passwords server-side, since you can't verify what happens to them in transit or on the server.
Should I use a password manager instead?
Yes, ideally. A password manager generates and stores unique passwords per site automatically. This tool is useful for a one-off password, testing, or generating a passphrase to store yourself — but a password manager scales much better across dozens of accounts.
Is my generated password stored or transmitted?
No. Generation happens entirely in your browser using the Web Crypto API — nothing is sent to a server, and nothing is stored after you leave the page.