SSL Certificate Checker

Check a website's SSL certificate: expiry date, issuer, domains covered and whether the chain is valid. Get warned before it expires.

How to use SSL Certificate Checker

Enter a domain.
We connect over HTTPS and read the certificate.
See whether it's trusted, when it expires and which names it covers.

Good to know

Our server fetches the page for you (browsers block reading other sites directly). Only public websites can be checked — private and local network addresses are refused.

Privacy

Your file or request is processed on our server, then deleted as soon as the result is sent back. Nothing is kept or shared.

Questions

My certificate renews automatically — why check?

Auto-renewal fails more often than people think (DNS changes, firewall rules, expired API keys). A quick check before it expires saves an outage.

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