# Password Strength Checker to Boost Account Safety

Quit doubting existing passwords and instantly test how secure your password is with DragBin's free password strength checker. Analyze password strength, identify weak patterns, and improve security before your account gets hacked. Free to use, no signup required, no credit card.

## Key features

- **Live strength scoring** — uses the zxcvbn engine to score passwords 0–4 with guess-bit entropy estimates.
- **Crack-time scenarios** — see how long a throttled login form, an unthrottled API attack, a slow-hash database leak (bcrypt/argon2), and a fast-hash database leak (MD5/SHA-1 against GPU farms) would take.
- **Character checklist** — 12+ characters, lowercase a–z, uppercase A–Z, numbers 0–9, symbols, charset size.
- **Pattern detection** — flags predictable words, repeats, sequences, and commonly leaked passwords.
- **Optional breach exposure check** — asks Have I Been Pwned if this password appears in known data leaks using k-anonymity.

## How DragBin handles your password (privately)

Your password is processed entirely on this device. We do not send it to any server, do not store it, and do not log it. For the optional breach exposure check, your password is hashed with SHA-1 inside this tab; only the first 5 characters of the SHA-1 hash are queried against the HIBP range API. Your full hash and raw password never leave the device — this is k-anonymity.

## How will this determine how strong is my password?

DragBin's password strength checker will analyze your password in seconds, estimating how difficult it would be for attackers or brute force attacks to breach it. The tool evaluates:

- Password length
- Uppercase and lowercase letters
- Numbers and symbols
- Predictable words or patterns
- Reused or commonly leaked passwords

## Password length matters more than complexity

A longer password is significantly harder to crack than a short password filled with random characters. A 16-character password is usually far stronger than an 8-character password with symbols plus numbers.

## How to create strong passwords that are hard to crack

- **Randomness** — the more random your password, the better. Avoid anything predictable.
- **Length** — longer passwords keep your account more secure. Extra characters alongside character variety make it far tougher to crack.
- **Uniqueness** — to reduce the risk of credential stuffing, use a unique password for every account.

## Strong passwords matter even more when your files matter

DragBin's quantum-resistant cloud storage helps prevent unauthorized access to your account and files. With post-quantum cryptography, your sensitive data gains an additional layer of protection against "Store Now, Harvest Later" attacks. Combined with client-side encryption, we deliver a zero-knowledge security architecture where only you can access your files.

## Related

- [Strong password generator](/tools/strong-password-generator)
- [Zero-knowledge encryption](/zero-knowledge-encryption)
- [Post-quantum encryption](/post-quantum-encryption)
- [Security architecture](/security)
- [Pricing](/pricing)