Password Generator

A weak or reused password is one of the most common causes of account compromise. This tool generates strong, random passwords using your browser's cryptographically secure random number generator, with adjustable length and character set options, plus a strength indicator so you can see how resistant the result is to guessing.

Your data stays in your browser — this tool runs entirely on the client side and nothing is uploaded to a server.

How to Use the Password Generator

  1. Adjust the length slider to your desired password length.
  2. Toggle uppercase, lowercase, numbers, and symbols on or off.
  3. Optionally exclude ambiguous characters (like 1, l, I, O, 0) for easier manual typing.
  4. Click "Generate" and then "Copy" to copy the result.

What makes a password strong

Password strength comes primarily from length and randomness — the total number of possible combinations an attacker would need to try. A long, truly random password made of a large character set is far harder to guess or brute-force than a short one, even a short password with unusual character substitutions, because predictable patterns (like swapping "a" for "@") are well known to attackers and cracking tools.

Length matters more than complexity rules

Modern security guidance generally favors longer passwords over arbitrarily complex ones. A 20-character random password is dramatically harder to crack than an 8-character password stuffed with symbols, simply because every additional character multiplies the number of possible combinations.

Use a password manager

The most practical way to benefit from strong, unique passwords is to use a password manager to generate and store a different random password for every account, so you never need to memorize or reuse them. Reusing the same password across multiple sites means a single breach can compromise every account that shares it.

Example

Example generated password
Length 16, all character types
xQ9!kLp2#Wr7@nZv

Tips

  • Longer is generally better than more complex — prioritize length first.
  • Never reuse the same password across multiple accounts.
  • Use a password manager to store generated passwords securely so you don't need to remember them.

Frequently Asked Questions

Are these passwords generated securely?

Yes, this tool uses your browser's cryptographically secure random number generator (crypto.getRandomValues), the same class of randomness used in real security-sensitive applications.

Are generated passwords stored anywhere?

No. Passwords are generated and displayed entirely in your browser and are never transmitted to or stored on a server.

What length password should I use?

Where the account allows it, 16 characters or more with all character types enabled is a solid, widely-recommended default for most accounts.