Wyvek

Password Generator

Create strong, random, secure passwords.

Strength

Free secure password generator

Create strong, random passwords in seconds. This generator lets you dial in the exact length and character mix you need — uppercase, lowercase, numbers, and symbols — then builds a password using your browser's cryptographically secure random number generator. A live strength meter shows how tough each password is to crack, and you can copy it to your clipboard with a single click. Everything happens on your device, so nothing you generate is ever uploaded or stored.

How to generate a strong password

  1. Drag the length slider (or type a number) to pick how many characters you want — 16 or more is a good target.
  2. Tick the character sets to include: uppercase, lowercase, numbers, and symbols. More variety means a stronger password.
  3. Optionally turn on Exclude ambiguous characters to drop easily-confused characters like l, I, 1, O, 0, and o.
  4. Watch the strength meter, then click Copy to grab your password, or Regenerate for a fresh one.

What makes a password strong?

Password strength comes down to two things: length and unpredictability. A longer password drawn from a larger pool of characters has far more possible combinations, which makes brute-force guessing impractical. That is why mixing in symbols and numbers and choosing 16+ characters matters. Because every character here is picked with crypto.getRandomValues and unbiased rejection sampling, there are no patterns for an attacker to exploit. Once you have a password, pair it with a hash generator to test checksums, or create unique identifiers with the UUID generator.

Private and generated locally

This tool never sends your password anywhere. All generation runs in your browser using JavaScript, nothing is written to a server, and no history is kept — refresh the page and the password is gone. For real accounts, generate a unique password for each service and keep them in a trusted password manager rather than reusing one everywhere.

Frequently asked questions

How does this password generator work?

You choose a length and which character sets to include — uppercase, lowercase, numbers, and symbols — and the tool builds a random password by drawing characters from those sets. All randomness comes from your browser's cryptographically secure crypto.getRandomValues, and a new password is generated the moment the page loads and every time you change an option.

Are the generated passwords cryptographically secure?

Yes. Every character is chosen using the Web Crypto API (crypto.getRandomValues), not the predictable Math.random. The tool also uses rejection sampling on 32-bit values so that no character is even slightly more likely than another, avoiding the modulo bias that weakens naive generators.

Is my password sent to a server or saved anywhere?

No. The entire generator runs in your browser with JavaScript. Passwords are created locally, never uploaded, logged, or stored, so it is safe to generate credentials for sensitive accounts. Once you leave or refresh the page the password is gone.

What does "Exclude ambiguous characters" do?

It removes characters that are easy to confuse when read or typed — the lowercase l, uppercase I, the number 1, uppercase O, the number 0, and lowercase o. This is handy for passwords you have to copy by hand or read aloud, at the cost of a slightly smaller character pool.

How long should my password be?

Longer is stronger. For most online accounts 16 characters with a mix of uppercase, lowercase, numbers, and symbols is a strong choice. For high-value accounts consider 20 or more. The strength meter updates live so you can see how length and variety affect it.

Should I use a unique password for every account?

Absolutely. Reusing passwords means one breach can compromise many accounts. Generate a fresh, random password for each service and store them in a reputable password manager rather than trying to memorise them.

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