Jenee

Password Strength Checker

Everything runs locally in your browser. Your input is not sent to any server and is not saved.

Strength-
0%

How to use

  1. STEP 1
    Type a password to see the strength bar and verdict (Weak/Fair/Strong) in real time.
  2. STEP 2
    Use the advice below to adjust length, character sets, and patterns.
  3. STEP 3
    Once it's strong enough, optionally open the Password Generator to create and evaluate stronger candidates.
  • This is a simplified assessment. Actual safety also depends on usage (no reuse, proper management).
  • Real-world threats vary (dictionary/brute-force/social engineering). For critical accounts, use long, complex passwords with two-factor authentication.
  • Inputs are never sent to a server. Feel free to test safely.

Tips

1

12–16+ characters with mixed cases, digits, and symbols increases guesses required exponentially.

2

Never reuse passwords. A single leak can compromise many accounts.

3

Password managers make using long, complex passwords practical.

4

Dictionary attacks target common words and patterns (e.g., Season2025!). Avoid predictable phrases.

5

Bad examples: sequences/keyboard rows (1234, qwerty), repeats (aaaa), common substitutions (P@ssw0rd).

6

Enable multi-factor authentication (MFA). Even if a password leaks, MFA helps contain damage.

FAQ

  • QUESTION 1

    How is the score calculated?

    We estimate based on length, character diversity (upper/lower/digits/symbols), and penalties for repeats, sequences, and common words.

  • QUESTION 2

    Is my input saved?

    No. Everything runs locally; we don't send or store your data.

  • QUESTION 3

    How to make it safer?

    Use 12+ characters, add diverse character sets, avoid predictable patterns, and enable two-factor authentication (MFA).

  • QUESTION 4

    Can I use spaces or emojis?

    It depends on the service. When allowed, they can increase the search space, but mind input handling on login.

  • QUESTION 5

    Could a ‘Strong’ password still be compromised?

    Yes. Breaches can happen via phishing, malware, or reused leaked databases. MFA and unique passwords remain essential.

  • QUESTION 6

    Do I need to rotate passwords regularly?

    Modern guidance favors changing upon signs of compromise. Prefer long, strong, unique passwords plus MFA.

  • QUESTION 7

    Password vs passphrase — which is better?

    A long, memorable passphrase (e.g., four unrelated words plus symbols) is effective. Avoid quotes or predictable phrases.

Feedback (Contact)