Password Strength Checker – Free Strong Password Generator
Password Strength Checker Generator Free
🔒 Password Strength Checker
⚠️
This tool works entirely in your browser. Your passwords are never sent to any server.
Enter a password
0/100
At least 8 characters
Uppercase letter (A-Z)
Lowercase letter (a-z)
Number (0-9)
Special character (!@#$%^&*)
Not a common password
🎲 Password Generator
Click "Generate Password" to create a secure password
📚 Generated Password History
No passwords generated yet. Click "Generate Password" to start.
🛡️ Password Security Tips
Use Unique Passwords
Never reuse passwords across multiple accounts. Each account should have its own unique password.
Enable 2FA
Use two-factor authentication whenever possible for an extra layer of security.
Regular Updates
Change passwords regularly, especially for important accounts like banking and email.
Use Password Manager
Consider using a reputable password manager to store and generate secure passwords.
About This Tool
Our Password Strength Checker and Generator is a comprehensive, free tool that helps you create and evaluate secure passwords. Perfect for individuals, businesses, and anyone concerned about online security.
This tool processes everything entirely in your browser, ensuring complete privacy and security. No passwords are ever sent to any server, and all operations happen locally on your device with real-time strength analysis and secure password generation.
Key Features
Real-time Analysis
Instant password strength checking with detailed feedback
Secure Generation
Generate cryptographically secure passwords with custom options
Customizable Options
Control length, character types, and advanced security settings
Visual Feedback
Color-coded strength meter and detailed criteria checking
Mobile Friendly
Works perfectly on all devices and screen sizes
100% Private
All processing happens locally in your browser
How to Use
- Check Password Strength: Enter your existing password in the checker to see its strength score and security criteria
- Generate New Password: Use the generator to create secure passwords with customizable options
- Adjust Settings: Modify length, character types, and advanced options to meet specific requirements
- Copy and Use: Copy generated passwords to your clipboard or use them directly in the checker
- Review History: View previously generated passwords and copy them as needed
- Follow Security Tips: Implement the recommended security practices for better protection
Security Features: Real-time strength analysis, common password detection, entropy calculation, and secure random generation
Frequently Asked Questions
How is password strength calculated?
Password strength is calculated based on multiple factors including length, character diversity, entropy, and whether it matches common password patterns. The tool checks for uppercase/lowercase letters, numbers, special characters, and compares against known weak passwords to provide a comprehensive strength score.
Are my passwords safe when using this tool?
Yes, absolutely! This tool runs entirely in your browser using client-side JavaScript. Your passwords are never transmitted to any server or stored anywhere. All analysis and generation happens locally on your device, ensuring complete privacy and security.
What makes a password strong?
A strong password typically has 12+ characters, includes a mix of uppercase and lowercase letters, numbers, and special characters. It should not be a common word, personal information, or follow predictable patterns. The longer and more random the password, the stronger it is.
How often should I change my passwords?
It's recommended to change passwords every 3-6 months for important accounts, or immediately if you suspect a breach. However, using unique, strong passwords with two-factor authentication is more important than frequent changes. Focus on password uniqueness across different accounts.
Should I use a password manager?
Yes, password managers are highly recommended! They can generate, store, and automatically fill strong, unique passwords for all your accounts. This eliminates the need to remember multiple complex passwords while maintaining excellent security across all your accounts.
What are the advanced generation options?
Advanced options help create passwords for specific requirements: "Exclude similar" removes confusing characters like 0/O and 1/l/I, "Exclude ambiguous" removes characters that might be unclear in certain fonts, and "No repeating" ensures no character appears consecutively.
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