SSL Certificate Check

Full TLS certificate health check using nothing but openssl. No signup required.

Prerequisites

• openssl 1.1.1 or newer on PATH (openssl version)

Trigger

• "Check the SSL cert on example.com"
• "When does my certificate expire?"
• "Is TLS 1.1 still enabled on my site?"
• "Verify my certificate chain is complete"

Workflow

Set HOST to the bare hostname (no scheme, no path). Every probe below is read-only.