Build stronger passwords without sharing them.
This tool runs entirely in your browser. It does not send, save, log or transmit what you type to Savana Security or any third party. For practice, use a made-up password—not a real password from an important account.
Try a sample password
Heuristic strengthEnter a sample
Length0 characters
Length, unpredictability and uniqueness matter more than clever substitutions.
Generate a random password
Cryptographically secure randomness generated on your device. A password manager can store a unique password for each account.
What's measured?
We use transparent local rules: length, character variety, repeated patterns and common password phrases. The result is educational, not a cracking-time forecast or security certification.
No third-party scripts or remote API calls are required by this lab. Browser extensions and your device's own software may still have access to what you type, so avoid entering actual credentials.
Ask about account security and password managers