About Passwords4Free
We make strong passwords and honest security advice available to everyone — free, private, and with nothing to sign up for.
Our mission
Most people know they should use long, unique passwords. The hard part is actually doing it without a tool that feels like a chore or quietly profits from your data. Passwords4Free exists to close that gap: a clean, fast password generator and a plain-English strength analyser that anyone can use in a few seconds, at no cost, with no catch.
We also believe security advice should be readable. You should not need a computer-science degree to understand why a 20-character random password is stronger than swapping an a for an @. Our guides aim for clarity over jargon, and we will never try to scare you into a purchase.
Privacy-first, by design
This is the part we care about most. Both tools run entirely inside your browser. There is no server that receives what you type, because everything happens on your own device:
- Passwords are created locally using the browser's Web Crypto API (
crypto.getRandomValues()), a cryptographically secure source of randomness — neverMath.random(). - Whatever you generate or paste into the analyser is never sent over the network, logged, or stored on any server we control.
- There are no accounts, no sign-ups, and no tracking pixels following you around the web.
Close the tab and whatever you generated is gone. The only way to keep a password is to copy it somewhere safe yourself — ideally a reputable password manager.
How it works
The generator builds a random string from the character sets you choose (lowercase, uppercase, numbers, symbols), drawing each character from a secure random source so the result has no predictable pattern. You control the length and can exclude look-alike characters that are awkward to read.
The analyser estimates a password's strength by calculating its entropy in bits and flagging common weaknesses — dictionary words, sequences, repeats and known-bad passwords. The time-to-crack figure it shows is an educated estimate to help you compare options, not a guarantee. It, too, runs without sending your password anywhere.
Part of a small family of tools
Passwords4Free is one of a small family of password tools, each built the same way — private, free, and account-free — but tuned for a particular need:
- Best Password Generator — our sister generator and strength-analyser site.
- GamingPassword — strong passwords tuned for gamers and game-account platforms.
- PassphraseMaker — memorable passphrases that are strong and easy to recall.
- WorkPassword — policy-ready passwords for teams, IT admins and the workplace.
Who writes here
Our blog and guidance are written by security writer Leo Martin, who specialises in turning dense security standards and breach research into advice ordinary people can act on. The aim is always the same: explain the reasoning, point to the underlying methods, and recommend only practices worth following.
If you have questions about any of this, get in touch.