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Password Generator Online Free — PrivaTools

TL;DR: Pick a length and character classes, click Generate, and copy a cryptographically-secure password — never leaves your browser.

Generate strong passwords online for free — cryptographically-secure random passwords with custom length, symbols, digits, and exclusion rules. Runs 100% in your browser.

Every PrivaTools tool — including Password Generator — is genuinely free with no premium tier, no per-day limit, and no watermark on the output. Files are deleted from the server within seconds of your download completing. Source code: github.com/taiyeba-dg/privatools.

How to Use Password Generator

  1. Choose length and character classes — Length 8-100. Include uppercase / lowercase / digits / symbols / exclude ambiguous (1lI0O).
  2. Click Generate — Uses Web Crypto API's secureRandomValues — cryptographically strong random.
  3. Copy the password — Runs entirely in your browser. The password is never logged anywhere.

Frequently Asked Questions

How strong is the password?

Length 20 with mixed classes ≈ 130 bits of entropy — uncrackable by brute force. Length 12 ≈ 78 bits — still very strong.

Why exclude ambiguous characters?

Visual confusion: l vs 1 vs I, 0 vs O. Excluding them makes the password easier to type / read aloud at the cost of slightly less entropy.

Is it really random?

Yes — Web Crypto's getRandomValues uses the OS's cryptographically secure RNG (e.g. /dev/urandom on Linux, BCryptGenRandom on Windows).

Last reviewed 2026-02-10 by the PrivaTools maintainers. Source code on (MIT-licensed, self-hostable).

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