Password Strength Checker
Uses the zxcvbn algorithm (by Dropbox) to evaluate password strength. Shows a 0–4 score, estimated crack time on different attack scenarios (online throttled, offline fast hash), and specific suggestions for improvement. Detects dictionary words, keyboard patterns, dates, and repetition.
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Common Use Cases
- Evaluate passwords before storing them
- Educate users about password quality
- Test password policy requirements
- Audit weak passwords in a list
Frequently Asked Questions
What score is considered strong?
zxcvbn scores range from 0 (very weak) to 4 (very strong). Score 3+ is generally acceptable. Score 4 means the password would take years to crack offline with fast hardware. Focus on length and randomness over complexity rules.
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Tool Info
CategorysecurityAI EnhancementNoData StorageZero retention