Password Security Analyzer
Get a comprehensive security report on your password's strength and weaknesses.
Analyze Your Password
Recommendations
Weaknesses
Strength Analysis
Data Breach Check
Uses the secure k-Anonymity model to check against the Pwned Passwords database.
How to Use This Tool
Get a detailed security report on your password in seconds
Comprehensive Password Analysis
This tool provides a multi-faceted analysis of your password's security. It goes beyond simple "strong" or "weak" labels to give you actionable insights. All analysis, including the data breach check, is performed securely without your password ever leaving your browser.
Enter Your Password
Type the password you want to analyze. The analysis will begin instantly as you type.
Review the Score
Check the overall security score, which summarizes the password's strength and weaknesses.
Examine the Breakdown
Look at the detailed cards for recommendations, weaknesses, strength metrics, and data breach status.
Improve Your Password
Use the feedback to create a stronger, more secure password that meets all the recommendations.
k-Anonymity Explained
For the data breach check, we use a privacy-preserving technique called k-Anonymity. Only the first 5 characters of your password's hash are sent to an API, which returns a list of all breached password hashes starting with those characters. The final check happens locally in your browser, ensuring your full password remains secret.
Why Use This Tool?
Holistic Scoring
Get a single, easy-to-understand score based on multiple security factors.
Breach Detection
Securely checks if your password has appeared in known data breaches.
Actionable Advice
Receive clear recommendations and a list of weaknesses to address.
Privacy First
Your password is never transmitted or stored. All analysis is done locally.
What Makes a Password Secure?
Length and Complexity
A long password with a mix of uppercase, lowercase, numbers, and symbols is harder to crack.
Unpredictability
Avoid common words, patterns (like '12345'), and personal information (birthdays, names).
Uniqueness
Use a different, strong password for every online account to limit damage from a data breach.
Consider Passphrases
A long passphrase of random words (e.g., 'correct horse battery staple') can be both secure and memorable.
Use a Password Manager
Password managers generate and store strong, unique passwords for you, so you only need to remember one master password.