Password Strength Checker
Check password strength in your browser without sending or storing it.
Result
This is a general composition check and does not guarantee that a password is not exposed or completely secure.
What Is Checked
The checker reviews length and the use of uppercase, lowercase, numbers, and symbols. Use a long, unique password for every important account.
Length and uniqueness matter most
A longer password or passphrase usually creates more possible combinations than a short, complex-looking pattern. Unique use is equally important: one strong password reused across sites can still expose every account after a single breach.
What this score cannot know
The local score checks visible composition rules, not whether the password appears in breach data, follows a predictable phrase, or has been observed elsewhere. Treat it as editing feedback rather than a guarantee of resistance to every attack.
Frequently Asked Questions
Does the strength check leave my browser?
No. Analysis runs only in your browser and the password is not sent to a server or storage.
Does a strong result guarantee safety?
No. A reused or previously exposed password can remain unsafe even with a high composition score.
What makes a good password?
Use a long, unique, unpredictable password or one generated by a trusted password manager.