HTTPS / TLS Check
A TLS certificate proves a server’s identity to browsers and encrypts the connection, and it must be valid, unexpired, and served with its full chain. This check inspects the certificate a server presents, its chain, names, expiry date, and protocol, and says whether clients will trust it.
When to use this: Browsers show a certificate warning, a certificate is about to expire, or you just installed a new one. Command prefix https:
About the HTTPS / TLS Check
Inspect the TLS certificate a server presents: chain, issuer, subject alternative names, expiry, protocol and whether the chain is trusted.
FAQ
- Why do some browsers trust my certificate and others not?
- Usually a missing intermediate certificate. Serve the full chain, not just the leaf.
- How early should I renew?
- Automated certificates renew around 30 days before expiry; monitor so a broken renewal never reaches zero.