About the Password Generator
Tezmy's Password Generator creates strong, truly random passwords using your browser's built-in cryptographic random number generator, the same kind of randomness used for encryption. Choose the length and which characters to include, and every option you pick is guaranteed to appear at least once. Passwords are created on your own device and are never sent over the internet or saved anywhere.
Updated October 2026
How to use the Password Generator
- 1A strong password is created as soon as the page opens.
- 2Pick the length, 16 or more is recommended.
- 3Choose which characters to include: uppercase, lowercase, numbers and symbols.
- 4Press Copy to copy it, or New for a different password.
What makes a password strong?
Length matters most. Every extra character multiplies the number of possible passwords, so a random 16-character password is vastly harder to guess than an 8-character one. Mixing capitals, small letters, numbers and symbols adds more possibilities for each character.
Just as important: a password must be random and unique. Passwords built from names, birthdays or common words are guessed in seconds, and reusing one password means a single leak can open all your accounts.
How long should your password be?
You can choose any length from 4 to 128 characters. The strength meter shows how hard the password would be to guess.
- 16 characters: a strong choice for most accounts like email, shopping and social media.
- 20 or more: for important accounts such as your email, bank and password manager.
- 12: the minimum we'd suggest when a site limits length.
- Wi-Fi passwords: 20 or more characters, since you rarely type them (share them with a Wi-Fi QR code instead).
How to keep your passwords safe
- Use a different password for every account.
- Save them in a password manager, such as the one built into your iPhone, Android phone or browser.
- Turn on two-step verification wherever you can.
- Never send passwords by email or chat. Share Wi-Fi access with a QR code instead.
Are these passwords safe to use?
Yes. Each password is made on your own device by your browser's cryptographic random number generator, the same kind of randomness used for encryption. It is never sent over the internet, saved or seen by us. Once you close the page, it exists only where you saved it. After creating a password, you can test how it behaves in other tools. The QR Code Generator makes a code for a Wi-Fi password, the Hash Generator shows how it would be stored by a site, and the UUID Generator gives you a random identifier when you need a username that nobody can guess. Use the Case Converter if a site wants a specific letter case.
Features
- Cryptographically secure randomness
- Length from 4 to 128 characters
- Guarantees every chosen character type
- Option to avoid look-alike characters
- Live strength meter
- Never sent to a server or stored
Frequently asked questions
How long should my password be?
At least 12 characters, and 16 or more is better. Length matters more than anything else: each extra character makes a password much harder to guess.
Are these passwords really random?
Yes. They use the Web Crypto API built into your browser, which provides cryptographically secure random numbers. They do not use predictable functions like Math.random.
Do you store or see my passwords?
No. Passwords are generated on your device and never leave it. Nothing is sent to our servers or saved.
What does “avoid look-alikes” do?
It removes characters that are easy to confuse, like capital I, lowercase l, the number 1, capital O and zero. That helps if you ever need to read or type the password by hand.
What is entropy?
Entropy measures how unpredictable a password is, in bits. Every extra bit doubles the number of guesses an attacker would need. Around 80 bits or more is considered very strong.
Should I include symbols?
Yes, if the website allows them. Symbols make each character harder to guess. If a site rejects some symbols, untick Symbols and add a few extra characters of length instead.
Can I remember a random password?
You don't need to: let a password manager remember it. For the one password you must remember, use a long phrase of several random words instead.
Is it safe to use an online password generator?
It is here, because the password is created on your device and never sent anywhere. Avoid generators that make passwords on a server or ask for your email.