Password Strength Checker
Instantly analyze your password security and get actionable feedback
What's good
No positives yet — start typing
Suggestions
- !Enter a password to check its strength
About Password Strength Checker
This tool analyzes your password across eight security dimensions: length, lowercase letters, uppercase letters, numbers, special characters, repeated patterns, common sequences, and dictionary words. Each criterion contributes to a score out of 100.
You can also use the Generate button to instantly create a cryptographically random 16-character password that satisfies all criteria. Click Copy to put it on your clipboard.
Everything runs entirely in your browser. Your password is never sent to any server, making this tool completely private and secure.
- 100% free — no account needed
- Runs in your browser
- Nothing is uploaded
Frequently asked questions
Is Password Strength Checker really free?
Yes. Password Strength Checker is completely free on PureBrowser — every feature, with no account, no trial, and no credit card.
Does Password Strength Checker upload my data?
No. Password Strength Checker runs entirely inside your browser, so anything you type, paste, or open stays on your own device.
Do I need to sign up or install anything?
Neither. There is no account and nothing to download — open the page and Password Strength Checker is ready to use on desktop or mobile.
Does Password Strength Checker work offline?
Once the page has loaded, yes. All of the processing happens locally in your browser, so it keeps working without a connection.
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