Weak Password Check
Check a password against common patterns and a built-in list of frequent passwords.
Hashing & encryption Client-side Local dictionary
Tool preview
How to use it
- 01
Type the password.
- 02
Read the checklist.
- 03
Fix every red item.
Limitations
- ! The dictionary is a small built-in list, not a full breach corpus.
- ! A password that passes can still be weak against a targeted attacker.
FAQ
Is my password sent to a server?
No, the checks run locally against an embedded list.
Why is length weighted so heavily?
Each extra character multiplies the search space, which matters more than symbol variety.
Should I change a password that fails?
Yes, and enable two-factor authentication on that account.
Files never leave your device
Processing happens in your browser using the File API, WebAssembly and Web Workers. There is no upload endpoint.
Technical details
- Processing
- Client-side
- Implementation
- Local dictionary
- Category
- Hashing & encryption
- Network requests
- None while processing