Changelog

1.0.0 — October 2026

Rewritten from scratch (Manifest V3), desktop and Android.

Revocation checked directly by the browser: no third-party server, no data sent anywhere. Version 0.3 sent the visited site to an external service (ocspchecker.com).
OCSP first, CRL as fallback, with signature verification of the responses.
Grade A+ to F, expiry, issuer, validation type (DV/OV/EV), TLS version, full chain.
On revoked certificates: warn, block the page, or strict mode.
Domain monitor: re-checks your sites every 12 hours and warns about revocation or near expiry.
History, chain/report export, copy PEM, check any site on demand.
Light and dark theme, English and Italian, works on Firefox for Android.

An OCSP check of the current site's certificate, done by sending the site's address to ocspchecker.com.