Interactive tools

Try these tools directly, no install needed

Three small tools built to be used, not just described — pick one below.

Live security headers and TLS certificate analysis for any site, with a score out of 100.

Eight reconstructed emails to sort as legitimate or phishing, with an explanation after each answer.

Entropy, estimated crack time and known-breach check, computed live in your browser.

All three are for educational purposes. Nothing you type into them is stored.