🔐 Cert Observatory

Retrieve and inspect TLS certificate chains for any domain.

Retrieve Certificate

Observation details:

  • Server-side retrieval of the TLS certificate chain
  • Basic TLS handshake on port 443; no HTTP requests, no redirects followed
  • Full chain displayed with each certificate decoded for inspection
  • Trust path expanded to include CAs beyond the server-presented chain

Retrieving certificate chain...

Enter a domain above to retrieve its TLS certificate chain

Settings

Display preferences for certificate details.

Hash rendering format

Toggle hash values between colon-separated format (aa:bb) and compact format (AABB).