Password Strength Checker
Analyze password security strength. Check length, complexity, and patterns to create secure passwords.
• Your password is analyzed locally and never sent to any server
• Always follow each website's password policy when signing up
🔐 What is Password Strength Checker?
Password Strength Checker analyzes your password security in real-time. It evaluates length, uppercase, lowercase, numbers, special characters, and detects common patterns (123, abc, qwerty). Scores out of 100 with five levels from Very Weak to Very Strong. Your password is processed locally in the browser and never sent to any server.
📊 Scoring Criteria
| Factor | Points | Recommendation |
|---|---|---|
| Length | Up to 30 | 12+ characters recommended |
| Lowercase | 10 | Include a-z |
| Uppercase | 10 | Include A-Z |
| Numbers | 15 | Include 0-9 |
| Special chars | 20 | !@#$%^&* etc. |
| Variety bonus | Up to 15 | Use all 4 types |
💡 Tips for Strong Passwords
- Length first: 12+ chars is more effective than complexity alone
- Passphrase: Use memorable sentences like "I wake up at 7am every day!"
- Avoid personal info: No birthdays, phone numbers, or names
- Unique per site: Never reuse passwords across accounts
Frequently Asked Questions
Is my password stored anywhere?▼
No. All analysis is done locally in your browser. Nothing is sent to any server or stored. Refreshing the page clears everything.
Is 80+ score safe enough?▼
Generally yes, 80+ is secure for most online services. However, financial or enterprise systems may have additional requirements like password history checks.
Should I use a password manager?▼
Highly recommended. Password managers generate and store unique strong passwords for each site, significantly improving your security.