Password Strength Checker

The QuickToolz Password Strength Checker scores any password using the industry-standard zxcvbn entropy model — the same approach used by Dropbox, GitHub, and Stripe. See your password’s estimated crack time under offline brute-force and online throttled attacks, plus specific suggestions to make it stronger.

What we check

• Pattern detection (dictionary words, dates, keyboard runs, leet-speak)

• Character variety and length

• Estimated guesses needed to crack

• Crack times across four attack scenarios

Important: never check a password you actively use — type a similar variant. All checks happen locally, but the safe habit is to never enter real credentials anywhere except where they are used.