All-in-One Security Suite

Password Security Tools

Everything you need to assess, protect, and generate secure passwords — all in one place, processed entirely in your browser.

Real-Time Analysis

Password Strength Checker

Real-time entropy analysis with brute-force time estimation and weakness detection.

Start typing to see real-time password analysis

Offline Breach Check

Check passwords and emails against curated offline breach datasets using SHA-256 hashing.

Enter a password and click search to check against the Have I Been Pwned database

How It Works (k-Anonymity)

Your password is securely checked against Have I Been Pwned database of breached passwords

SHA-1 Hash

Your password is hashed with SHA-1 entirely in your browser

Send Prefix Only

Only the first 5 characters of the hash are sent to the HIBP API

Local Match

Matching hashes are returned and compared locally — your full hash is never exposed

Cryptographically Secure

Cryptographically secure password and passphrase generation with customizable policies.

Configuration

Customize your password generation rules