Search for “password generator” and the top results are ad-funded pages that create your new secret on someone else’s terms: trackers loaded, analytics firing, and no way to check what the page does with the string it just showed you. That is the wrong place to create the key to your accounts. Bitwarden, the open-source password manager, gets this right by generating everything locally. We built Key Mint on the same principle: a free generator that runs entirely on your device, right here on this page. No install, no signup, no history.
Generate a password
It creates a password the moment it loads. Adjust the sliders and toggles and it regenerates instantly, then hit Copy.
How to use it
Password mode covers most jobs: set the length from 8 to 64 characters, toggle uppercase, lowercase, digits, and symbols, and turn on “avoid ambiguous” if you ever need to read the result aloud or type it from paper. The defaults produce a 20-character password of roughly 128 bits, which is more than any account needs. Passphrase mode strings 3 to 8 random words from a built-in 682-word list, with your choice of separator and an optional digit. Passphrases win whenever a human has to remember or type the secret: a Wi-Fi key, a laptop login, or the master password for a password manager itself.
The meter shows entropy in bits, and the idea is simpler than it sounds. Each bit doubles the number of guesses an attacker would need, so a 47-bit passphrase has about 140 trillion possibilities and an 80-bit one has ten million times more than that. Anything past 60 bits is out of reach for online guessing; past 90 holds up even if the site storing it gets breached. Key Mint keeps no history by design. A generator should never retain secrets, so nothing you create is stored or sent anywhere, and only your settings are remembered.
How it compares to Bitwarden
We should be straight about the category difference: a generator is not a password manager. Key Mint creates one strong secret and hands it to you. Bitwarden creates the secret, stores it in an end-to-end encrypted vault, syncs it across your phone and laptop, and autofills it the next time you land on the login page. That last part matters more than people think, because autofill that checks the site’s address is real phishing protection, and a generator cannot give you that.
Bitwarden’s free tier is unusually complete: unlimited passwords, unlimited devices, and the same open-source code that security researchers audit in public. The paid tier adds an authenticator, encrypted file attachments, and emergency access for a few dollars a year. If Bitwarden is not the fit for you, we tested the other options in our best Bitwarden alternatives roundup.
Our honest advice: use Key Mint when you need a strong password right now, on any device, with nothing installed. Get Bitwarden when you are ready to stop reusing passwords entirely, because the manager is what makes a hundred unique secrets practical.
Get the full app
Bitwarden is free on Android and iOS, with apps for every desktop platform and browser extension you are likely to use.
Frequently asked questions
Are online password generators safe?
It depends entirely on where the password is created. If the page generates it on a server, or loads ad and analytics scripts alongside it, you have no way to know who else saw it. Key Mint is safe to use because everything happens locally: the randomness comes from your browser’s cryptographic generator, the page makes no network requests, and nothing you generate is stored or transmitted. Once loaded, it works with your connection switched off.
Is this the real Bitwarden?
No. Key Mint is an original tool we built, inspired by the local-generation approach Bitwarden takes. It is not affiliated with, endorsed by, or connected to Bitwarden Inc. in any way. If you want a vault, sync, and autofill, get the official app from the stores above.
Should I use a password or a passphrase?
Use a random password wherever software fills it in for you, because length and symbols cost nothing when you never type them. Use a passphrase for anything you must remember or enter by hand: your master password, device logins, and Wi-Fi. Four or more random words are far easier to type correctly on a phone than 20 mixed characters, and at five or six words the strength is respectable.
Does the generator work offline?
Yes. Once this page has loaded, Key Mint runs entirely in your browser with no connection needed. It keeps no history of anything you generate; only your settings, like length and character choices, are saved on your device so they are the same next visit.
