SSL / TLS
SSL Certificate Checker
Check if a website's security certificate is valid and when it expires. See who issued it and what domains it covers.
Tips
- Enter domain without
https:// - Use "Override Server" to check a specific IP
- Wildcard certs match subdomains
Check Certificate
Notes
- This tool checks the certificate presented by the server, not the full chain of trust.
- Use "Override Server" to check certificates on specific IPs (useful for load balancers or migrations).
- Wildcard certificates (*.example.com) match any single subdomain level.