Certificate Expiry Check vs. Full HTTPS Diagnostics: What You Actually Need

https://webreliability.urbanvellum.com/posts/certificate-expiry-check-vs.-full-https-diagnostics-what-you-actually-need

When you're troubleshooting website issues, a simple certificate expiry check might not reveal the full picture. Full HTTPS diagnostics examine the entire handshake, cipher suites, and chain validation. For most day-to-day tasks, knowing the expiry date is enough, but if you're seeing mixed content warnings or protocol mismatches, go deeper. Pick the right tool for the problem.