SSL Checker
Check any site's TLS certificate live — issuer, expiry date and days remaining, so a browser warning never takes you by surprise.
What this checker verifies
The tool connects to port 443 exactly the way a visitor's browser does and reads the certificate the server presents: the common name it covers, the certificate authority that issued it, and — most importantly — how many days remain before it expires. Expired certificates don't just scare visitors with warnings; they break payment flows, block API integrations and hurt trust signals that Google pays attention to.
Certificates under 30 days from expiry are flagged amber so you have time to act. If you host with Danets Server, AutoSSL renews your certificates automatically before expiry — this checker is most useful for domains you host elsewhere, third-party services you integrate with, or confirming a newly issued certificate has propagated. Run it on your own sites monthly; it costs nothing and catches the silent failures.