Most hacked accounts aren’t broken by clever code. They fall because someone reused a password from a leaked site, or picked something guessable like a pet’s name and a year. A password generator solves both problems by creating long, random passwords that nobody — including you — could guess.
Naturally, people ask whether these tools are safe. This guide explains how they work, what makes a password strong, how long it should be, and how to manage passwords you can’t remember.
What Is a Password Generator?
A password generator is a tool that builds a password from random characters — letters, numbers and symbols — instead of words you choose. Because a person isn’t picking the characters, there are no patterns for an attacker to exploit.
Human-chosen passwords are surprisingly predictable. People capitalise the first letter, put numbers at the end and finish with an exclamation mark. Attackers know this and try those patterns first.
How Do Random Password Generators Work?
Good generators use a cryptographically secure random number generator — the same kind of randomness used for encryption keys. Every modern browser has one built in, called crypto.getRandomValues. Each character is drawn at random from the set you allow, so every combination is equally likely.
Weak generators use ordinary random functions designed for games and animations, which can be predictable. That’s the main thing to check.
Are Password Generators Safe to Use?
A well-built password generator is safer than inventing passwords yourself. Look for these signs:
- It runs in your browser — the password is created on your device and never sent over the internet.
- It uses cryptographic randomness, not a basic random function.
- It doesn’t require an account or ask for the site the password is for.
- It doesn’t store anything once you close the page.
Our strong password generator ticks all four: it uses your browser’s crypto API, and passwords never leave your device.
How Long Should a Password Be?
Length matters more than anything else. Every extra character multiplies the number of possible passwords.
| Length | Strength (random, mixed characters) | Good for |
|---|---|---|
| 8 characters | Weak by today’s standards | Only where a site forces a maximum |
| 12 characters | Strong | Most everyday accounts |
| 14–16 characters | Very strong | Email, banking, work accounts |
| 20+ characters | Extremely strong | Password manager master keys, Wi-Fi, admin accounts |
Current guidance from the US standards body NIST favours longer passwords over complicated rules. If a site allows it, 16 characters is a great default.
Do You Need Special Characters?
Symbols increase strength per character, so they help. But a longer password without symbols can be just as strong as a shorter one with them. If a site rejects certain symbols, turn them off and add a few extra characters instead. Our generator also lets you exclude look-alike characters such as l, 1, O and 0, which helps when you have to type a password by hand.
How to Use a Password Generator (Step by Step)
- Open the password generator.
- Choose the length — 16 is a good choice.
- Tick uppercase, lowercase, numbers and symbols.
- Copy the generated password.
- Paste it into the site’s sign-up or change-password form, and save it in your password manager.
How Do You Remember Random Passwords?
You don’t — and that’s the point. A password manager remembers them for you. Built-in options like Apple Passwords, Google Password Manager and Microsoft Edge’s manager are free and sync across devices, and there are dedicated apps too. You only need to remember one strong master password.
For that master password, a long passphrase of several random words is easier to type and remember than a jumble of symbols, while still being very strong.
Password Generators in Browsers
Chrome, Edge and Safari can suggest strong passwords when you sign up for a site. They’re a good option if you use one browser everywhere. A standalone generator is useful when you need a password for something a browser can’t fill — a Wi-Fi router, a server, a shared work account or a device setup screen.
Common Password Mistakes
- Reusing passwords. One leak then unlocks every account. Use a different password everywhere.
- Small variations. “Summer2025!” to “Summer2026!” fools nobody.
- Personal details. Names, birthdays and favourite teams are found on social media.
- Skipping two-factor authentication. Even a perfect password benefits from a second factor.
Other Security Tools Worth Knowing
If you’re a developer, a hash generator is handy for checking checksums, and the UUID generator creates random identifiers using the same secure randomness. Neither replaces proper password hashing on a server, but both are useful in everyday work.
Final Thoughts
A password generator is safe when it runs locally and uses cryptographic randomness — and it’s far safer than making passwords up. Go for at least 12 characters, ideally 16, use a different one for every account, and let a password manager do the remembering. Generate your next one with our free strong password generator.
Frequently Asked Questions
Are password generators safe?
Yes, when they run in your browser, use cryptographic randomness and don’t send or store passwords.
How do random password generators work?
They pick each character at random from the allowed set using a cryptographically secure random number generator.
How long should a strong password be?
At least 12 characters; 16 is a great default for important accounts, and 20+ for master passwords.
Is a 16-character password secure?
Yes. A random 16-character password with mixed characters would take an impractically long time to crack.
Is an 8-character password strong enough?
Not any more. Use 8 only when a site forces it, and switch on two-factor authentication.
Do I need special characters in my password?
They help, but length matters more. A longer password without symbols can be equally strong.
How do I remember a randomly generated password?
Store it in a password manager and remember only one strong master password.
What is a good password generator?
One that runs locally in your browser, uses crypto-secure randomness and lets you set length and character types.
Should I use the password generator in my browser?
Yes, browser generators are good. A standalone generator helps for Wi-Fi, devices and shared accounts.
Can a generated password be hacked?
A long random password is practically impossible to guess, but it can still be stolen by phishing, so use two-factor authentication.
