AIGClub
Security and Privacy Tools

Password Strength Checker

Check password length, character variety, common values, repetition, and predictable sequences with a browser-local heuristic.

Enter a draft password to receive a local heuristic score and concrete improvement suggestions. The check runs in this browser and does not upload or store the value.

Maintained by AIGClub Team

Browser-local processing

Password Strength Checker

Current handler has no input-upload endpoint; remove sensitive content first

How to use

Finish in three steps

  1. 01

    Enter a draft password on a trusted device; avoid using a live credential if the device or browser is not under your control.

  2. 02

    Run the check and review the score, rating, detected character groups, and suggestions.

  3. 03

    Improve length and uniqueness, remove predictable patterns, then save the final password in a trusted password manager and enable MFA where available.

What the heuristic checks

The local rules consider length, lowercase and uppercase letters, digits, symbols, non-ASCII characters, well-known weak values, repeated characters, and alphabetic, numeric, or keyboard sequences.

Why length and uniqueness matter

A longer password or multi-word passphrase expands the search space, while uniqueness limits the damage from reuse. Character variety can help, but short substitutions such as P@ssw0rd remain predictable.

Important limits

The result cannot measure server-side rate limits, hashing, account recovery, phishing resistance, password reuse, or breach exposure. Treat the score as editing guidance, not certification or a guarantee.

FAQ

About this tool

Is my password uploaded or saved?

No. The published checker evaluates the value in the current browser and does not intentionally send it to a server, URL, cookie, or browser storage.

Does a score of 100 prove the password is safe?

No. A high heuristic score only means the local rules found no obvious weakness. Reuse, phishing, malware, breach exposure, and weak account controls can still make it unsafe.

Does this checker search breach databases?

No. It makes no network request and cannot tell whether a password has appeared in a leak.

Should I use symbols instead of length?

Do not trade away length for forced complexity. Prefer a long, unique generated password or passphrase that satisfies the service rules.

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