Feature Description
Website Certificate Lookup
Inspect HTTPS certificate validity, issuer, SAN entries, and fingerprints.
Enter a domain or URL to inspect HTTPS certificate validity, issuer, SAN, and fingerprint. Public hosts and common HTTPS ports are allowed by default.
Common use cases
- Use this page when a website certificate is close to expiry, a domain has just moved, or HTTPS was recently deployed and needs a quick check.
- It is useful for reviewing issuer, SAN names, validity dates, and fingerprints without opening local command-line tools.
- When discussing certificate issues with operations teams or clients, getting the key fields first makes troubleshooting easier.