Password Strength Checker
Instantly measure how secure your password really is. Get a clear strength rating (very weak to very strong), an entropy bits score, and specific tips to make it harder to crack. All analysis happens locally—your password never leaves your device.
How to Use
- 1Type or paste a password into the input field.
- 2Click the Check Strength button.
- 3Review the score bar, entropy bits, and personalized suggestions to strengthen your password.
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Frequently Asked Questions
Is my password sent anywhere?
No. The entire strength evaluation is performed locally in your browser using JavaScript; ShowPro never sees, stores, or transmits your password.
What is entropy bits?
Entropy bits quantify the randomness (uncertainty) of a password. Higher values mean more possible combinations, making the password exponentially harder to guess.
How accurate is the score?
The score (0–4) is based on a simplified simulation of real‑world cracking patterns (length, character variety, common patterns). While not as precise as the industry‑standard zxcvbn library, it provides a practical assessment.