🔒 100% Client-Side • Password Never Sent
🛡️ Secure Password Checker
Analyze password strength without sending it to any server
Password Strength:
Analyze password strength without sending it to any server
All password checking happens in your browser. Your passwords never leave your device.
Instant password strength analysis with no server delays.
Once loaded, works without internet connection.
No subscriptions, no hidden costs, completely free.
This password strength checker runs entirely in your browser using JavaScript. When you check a password, the analysis happens completely on your device. We never upload your passwords to any server, which means your credentials remain completely private and secure. This is critical for password security tools.
Unlike many online password checkers that send your passwords to servers for analysis, our client-side approach ensures zero data transmission, zero server logging, and zero privacy concerns. Your passwords never leave your computer.
Password strength is calculated based on multiple factors including length, character variety (uppercase, lowercase, numbers, symbols), entropy (randomness), and patterns. Longer passwords with diverse character types and high entropy score stronger. The tool analyzes these factors to provide a comprehensive strength rating.
A strong password is typically 12+ characters long, includes a mix of uppercase and lowercase letters, numbers, and special characters, avoids dictionary words and common patterns, and is unique (not reused across accounts). The more unpredictable and longer your password, the stronger it is.
Yes! Unlike many password checkers, this tool runs entirely in your browser with no server communication. Your passwords are never transmitted, logged, or stored anywhere. The analysis happens locally on your device, making it completely safe to check your real passwords.
Yes! This tool is completely free with no hidden costs or subscriptions. We believe privacy-first tools should be accessible to everyone.
We use Google Analytics to track page views for website improvement, but we never see, store, or collect your passwords. All processing happens locally in your browser.