purr.tools

Password Generator

Customize your password and click Generate. Everything runs locally in your browser.

Share this calculation

Copy this link to share your current inputs with anyone.

How to generate a strong password

Select your desired length and character types, then click Generate. The password is created using the browser's cryptographic random number generator, ensuring high entropy.

Password strength guidelines

NIST recommends at least 15 characters for important accounts. Including uppercase, lowercase, numbers, and symbols significantly increases entropy. Avoid dictionary words.

Frequently Asked Questions

Is my password saved or sent anywhere?

No. Passwords are generated entirely in your browser using the Web Crypto API and are never transmitted.

What makes a password strong?

Length and character diversity are the two most important factors. A 20-character password with all character types is extremely difficult to crack.

Embed this tool

Add this tool to your website by copying the snippet below.

<iframe
  src="https://purr.tools/en/embed/password-generator"
  width="100%"
  height="500"
  style="border:0;border-radius:8px;"
  loading="lazy"
  title="Password Generator -- Free Online Tool"
  allow="clipboard-write"
></iframe>