Password Strength Analysis and Generation
Password Tools
When to Analyze Passwords
Estimate password strength from length and character diversity before enforcing policy rules, or generate random passwords for test accounts and development fixtures. Entropy estimates help explain why short complex passwords may still be weak compared to long passphrases.
Analysis vs Hashing
Strength analysis estimates entropy from character sets — it does not check breach databases. For storing passwords, use BCrypt or Argon2 on your server. This tool helps evaluate composition and generate secrets for non-production use.
Developer Tips
- Enforce minimum length server-side — entropy scores are advisory only
- Prefer password managers over manually generated secrets for production
- Clear generated passwords from the page on shared machines after copying
Frequently asked questions
Is my password sent to a server?
No. Analysis and generation run entirely in your browser. Clear the page after use on shared machines.
Does this check against known breached passwords?
No. This estimates entropy from length and character diversity only. Breach checks require separate validation services.