Password strength

Client

Heuristic meter—pair with the password generator for new secrets.

About Password strength

Heuristic password strength meter—length, charset mix, common weak-password warnings; local only. The interactive transform on this page runs in your browser tab—Toolcore does not need your paste for the core operation described above.

How to use this page

Paste or type in the main workspace, run the primary action from the toolbar, then copy or download the result. Use Load example when the page offers it, or URL prefill (?q= / ?qb=) so agents and tickets open the same input.

Limits and safety

Utilities here are for development and inspection—do not paste live production keys, PANs, or recovery codes into any browser tab you do not control.

Heuristic strength only—generate random passwords on Password generator.

Checked locally; nothing is sent to Toolcore servers.

Nearby workflows on Toolcore

  • Password generator — Random passwords with length and character sets—generated in your browser. before you trust a token, digest, or key material in production.
  • Bcrypt hash & verify — bcrypt password digests with adjustable cost (bcryptjs)—hash or verify $2a/$2b strings locally. before you trust a token, digest, or key material in production.
  • Random string generator — Random alphanumeric, hex, Base64 URL-safe, or custom tokens—entropy hint, local only. before you trust a token, digest, or key material in production.
  • TOTP / authenticator codes — RFC 6238 time-based one-time passwords from a Base32 secret—HMAC-SHA1, otpauth URI and optional QR; local only. before you trust a token, digest, or key material in production.

Common use cases

  • Give users quick feedback while choosing a new password.
  • Teach minimum length and charset rules before server-side policy runs.
  • Compare a candidate password against common weak strings locally.

Common mistakes to avoid

  • Treating score as breach detection

    This does not check have-i-been-pwned or company policy engines.

  • Pasting production passwords on shared PCs

    Prefer generated passwords from the password generator tool.

FAQ

Is the password stored?

No. Assessment runs in memory in your tab only.

How is strength calculated?

Length, character classes, and a small blocklist of very common passwords.

More tools

Related utilities you can open in another tab—mostly client-side.