Analyse passwords locally in your browser
Password Intelligence uses the proven zxcvbn password analysis library to evaluate password strength and identify predictable patterns.
Password Intelligence
Check Your Password Strength Before You Rely on It
A password score only tells part of the story. Encrypti0n analyses common patterns, estimates resistance against different attack scenarios, and explains exactly how you can create a stronger password before using it for encryption or online accounts.
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Password Strength Checker
Analyse passwords locally in your browser - Receive practical suggestions for stronger passwords - Estimate resistance against common attack scenarios
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Password Intelligence uses the proven zxcvbn password analysis library to evaluate password strength and identify predictable patterns.
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Passwords receive an easy-to-understand score from 0 to 4 together with detailed explanations of detected weaknesses.
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The analysis estimates how resistant a password is against multiple password cracking scenarios instead of relying on a single generic score.
Built for trust
Designed to keep things secure
Everything is designed to help you complete the task with as little friction as possible.
Receive practical suggestions for stronger passwords
Passwords receive an easy-to-understand score from 0 to 4 together with detailed explanations of detected weaknesses.
Estimate resistance against common attack scenarios
The analysis estimates how resistant a password is against multiple password cracking scenarios instead of relying on a single generic score.
Try it out
How password strength is evaluated
Every analysed password receives a score together with practical explanations and recommendations.
Score 0-1
Very weak passwords that are highly predictable or easy to guess.
Score 2
Moderate passwords that may be suitable only for lower-risk situations.
Score 3
Strong passwords that should still be reviewed for uniqueness and password reuse.
Score 4
Excellent passwords with high resistance against common password guessing techniques when they are unique and securely stored.
What to expect
Helpful information before you begin
- Password Intelligence uses the proven zxcvbn password analysis library to evaluate password strength and identify predictable patterns.
- Passwords receive an easy-to-understand score from 0 to 4 together with detailed explanations of detected weaknesses.
- The analysis estimates how resistant a password is against multiple password cracking scenarios instead of relying on a single generic score.
- Educational sections explain password security, key derivation, Argon2id, and best practices for creating stronger passwords.
Good to know
Security and privacy notes
- Password strength analysis provides valuable guidance but cannot predict every possible attack or future data breach.
- Only analyse passwords using tools you trust. Encrypti0n performs password analysis locally so your passwords are not uploaded to remote servers.
Best next step:
Check Password Strength and keep passwords unique, long, and stored safely.
Real-world use cases
Where Password Strength Checker fits into everyday workflows
Security works best when it supports the task people are already trying to complete.
Testing passwords before creating a new account
Check for predictable patterns before committing to a password.
Evaluating passwords used for file and text encryption
Review encryption passwords before they protect sensitive files or messages.
Learning better password security habits
Use feedback to understand why length, uniqueness, and randomness matter.
Identifying weak or predictable passwords
Find patterns such as dates, dictionary words, repeats, and keyboard sequences.
Learn more
Understanding why a password is weak is just as important as the score
A simple colour or number cannot explain why a password is easy to guess. Modern password analysis looks for dictionary words, keyboard patterns, repeated characters, dates, names, and other predictable structures that attackers commonly exploit. Understanding these weaknesses helps you create stronger passwords instead of simply trying again until the score turns green.
Related topics
Password Crack Time Estimator, Password Weakness Analyzer, Secure Password Generator
Official resources
Password Intelligence, Password Generator, Security & Privacy
FAQ
Questions people ask before using this
No. Password analysis runs entirely inside your browser. Your password is never sent to our servers.
The score ranges from 0 to 4 and estimates how resistant your password is against common guessing attacks based on recognised patterns, length, complexity, and randomness.
Yes. Encrypti0n identifies predictable patterns such as dictionary words, repeated characters, dates, keyboard sequences, and other weaknesses, then provides suggestions for improvement.
Yes. Password Intelligence estimates resistance against several attack scenarios, helping you understand how stronger passwords significantly increase attack difficulty.
You should only analyse passwords using software you trust. Encrypti0n performs all analysis locally, making it much safer than submitting passwords to unknown online services.
Use a longer password, avoid predictable words or patterns, generate a random password when possible, and never reuse passwords across different accounts or encrypted files.
No. A strong password is only one part of good security. Use unique passwords, enable multi-factor authentication whenever possible, keep your devices secure, and store passwords safely in a trusted password manager.
Get started
Check Password Strength
Open the app to continue, or explore related resources below.
Related guides
Official resources