Password Strength Checker
Inspect password length, character variety, common patterns, and repetition locally.
Processing stays in your browser. These are heuristic checks, not a cracking-time estimate or a guarantee of strength. Use a password manager to create unique random passwords; no breach database is queried.
How to use the password strength checker
Inspect password length, character variety, common patterns, and repetition locally. Complete the test password fields above. Choose Run tool, review the output, then copy or download the result.
Example
A repeated password such as password123 receives common-pattern and predictability warnings.
Good to know
These are heuristic checks, not a cracking-time estimate or a guarantee of strength. Use a password manager to create unique random passwords; no breach database is queried.