What does an SSL certificate checker do?

It retrieves and displays the SSL/TLS certificate for a domain — including the issuer, subject, expiry date, cipher, and whether the certificate chain is valid.

How do I know if my SSL certificate is about to expire?

Enter your domain and check the Expiry Date field. Renew your certificate at least 30 days before expiry to avoid warnings.

What is an SSL certificate?

An SSL certificate encrypts data between a user's browser and your server, verifies your domain identity, and enables HTTPS. It is required for secure websites.

SSL Certificate Checker — Check SSL TLS Certificate Online

Check any website's SSL/TLS certificate details — issuer, expiry date, cipher suite, and validity. Instantly verify if your SSL certificate is valid and when it expires. Free tool.

Hostname / URL

Raw SSL data

Full SSL certificate JSON will appear here after a successful check.

How to use

1.Enter a hostname (e.g. eazytools.net) or full URL — the https:// prefix is optional.
2.Leave the port as 443 (default) or specify a custom port.
3.Click Check SSL to fetch the live certificate.
4.Review the overview card for validity status and expiry, and the technical card for cipher/TLS details.

Notes

—Checks are performed server-side — a direct TLS connection is opened to the target host.
—CDNs and proxies may serve a different certificate than the origin server.
—For production monitoring, use your own alerting or CA renewal logs alongside this tool.
—The expiry warning threshold is 30 days.

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