Vault Strength Check

Check password strength locally in a private popup analyzer.

Vault Strength Check is a lightweight Chrome extension that helps users estimate password strength privately inside a simple popup. Type a password and instantly see a strength rating plus clear tips for improvement—without sending anything to a server. The analyzer checks common local signals such as length, uppercase and lowercase letters, numbers, symbols, and whether the password matches a small list of very common weak passwords. A visual meter updates as you type, and a show/hide control lets you review the password when needed. All checks run entirely inside the extension popup on your device. The extension does not save passwords, does not sync them, and does not transmit them online. It does not access websites, browsing history, tabs, cookies, or user accounts. Vault Strength Check is intended for users who want a fast, privacy-friendly password strength helper with no unnecessary permissions.