Local password strength checker, entropy estimator and account hardening checklist
Check a password locally in your browser, estimate entropy, detect common weak patterns, review offline and online attack models, generate stronger passphrase ideas, create a privacy-safe breach lookup prefix and copy a checklist without sending the password to this website.
This checker runs locally. It does not submit the password to PeopleAreGeek. A password manager and unique passwords matter more than chasing a perfect score.
Password strength is about guessing resistance and account context
A strong password is not just a string with symbols. Attackers try leaked passwords, common words, keyboard walks, years, substitutions, repeated characters and patterns that people reuse across accounts. A password that looks complex can still be weak if it is short, predictable or based on personal information. A longer passphrase can be easier to remember and harder to guess than a short symbol-heavy password.
This password strength checker is designed as a local review tool. It estimates character pool entropy, applies penalties for common patterns, compares different attack speeds, flags context words, explains weak signals and produces a checklist for safer account setup. It does not send the password to the server, and the breach-prefix helper only creates the first five SHA-1 characters used by k-anonymity services so you can understand the workflow without exposing the password here.
How to interpret the score
The score is a useful warning signal, not a guarantee. Online login systems often throttle attempts, while leaked database hashes can be attacked much faster. The same password can be acceptable for a low-risk throwaway account and unacceptable for email, hosting, banking or admin access. For important accounts, use a password manager, unique passwords and multi-factor authentication.
- Length is usually the most reliable improvement.
- Uniqueness matters more than clever substitutions.
- Context words such as company, name or city should be avoided.
- 2FA reduces damage when a password is phished or reused.
- Password managers make strong unique passwords realistic.
Common password debugging examples
If the checker flags a year, avoid placing the current year at the end of a word. If it flags a keyboard walk, replace the pattern completely rather than adding one symbol. If the crack-time changes dramatically between attack models, assume the faster model for any account that could leak hashed passwords. If the password contains a company name, product name or email username, treat it as predictable.
Common questions
Should I type my real password here?
The checker runs in your browser and does not submit the value to this site, but you can test a similar password shape instead if you prefer.
Are symbols required?
Symbols help, but length and uniqueness usually help more. A long random or generated passphrase is often better than a short password with punctuation.
Can a checker prove that a password is safe?
No. It can catch common weaknesses. Real account safety also depends on breach history, reuse, phishing resistance, recovery settings and 2FA.
What actually makes a password strong?
Length first (aim for 12+ characters), then unpredictability and uniqueness per site. A long passphrase beats a short password full of symbols.
Is my password sent anywhere when I check it?
No, the strength is estimated entirely in your browser. As a habit, still never paste a real, in-use password into any website field.
What is password entropy?
A measure in bits of how unpredictable a password is. Each extra bit doubles the guesses needed to crack it; aim for 60 bits or more.
