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Security Tools

Password Strength Checker

Instantly check how strong a password is, right in your browser - never sent anywhere.

Type a password below to instantly check its strength - entirely in your browser, your password is never sent anywhere, not even to us.

Checked entirely in your browser - never sent anywhere, not even to us.

JustChecker builds tools that respect your data - this one never leaves your browser.

Frequently Asked Questions

No - this tool checks your password entirely in your browser using JavaScript. It is never transmitted anywhere, not even to us.

Length matters most - aim for at least 12-16 characters. Mixing uppercase, lowercase, numbers, and symbols helps, as does avoiding common words, keyboard patterns, and repeated characters.

Yes - a password manager can generate and store long, unique, random passwords for every account, which is far more secure than memorizing passwords yourself.
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