Password Generator
Generate strong, genuinely random passwords.
Runs entirely in your browser — your data is never uploaded to any server.
How it works
- Set the lengthSixteen characters or more is sensible.
- Choose character setsMore variety means more entropy.
- Copy your passwordStore it in a password manager.
What this tool does
- Cryptographically secure random source
- Entropy in bits shown for every setting
- Look-alike character exclusion for passwords you must type
- Generated locally and never transmitted or stored
Frequently Asked Questions
No. They are generated in your browser using the Web Crypto API, never leave the page, and are gone when you close the tab.
Sixteen characters with mixed character sets is a solid baseline. For anything valuable, twenty or more.
The number of bits of randomness. Each extra bit doubles the guessing effort — above about 80 bits, brute force stops being practical.
Never. Unique passwords per site are the entire point, which is what makes a password manager necessary.
Privacy and security
Your input is processed by JavaScript running inside your browser. Nothing you paste is sent over the network, logged, or stored — which is what makes this safe to use with production data. If you want to check this yourself: open your browser’s developer tools, switch to the Network tab, and use the tool — you will see no request carrying your file or input leave the page.