SSL checker – is your certificate OK?

Check the SSL certificate of your domain for free: who issued it, how long it is still valid, whether the chain is complete and which TLS version your server speaks.

Frequently asked questions

What happens when my certificate expires?

Browsers show a full-page warning that scares off most visitors. Payment and API integrations also break then.

What is a certificate chain?

Your certificate is signed by an intermediate authority, which in turn is signed by a root authority that browsers trust. If a link is missing, some devices report the certificate as invalid.

Which TLS version should my server use?

TLS 1.2 and TLS 1.3. Older versions (TLS 1.0/1.1) are considered insecure and are no longer supported by current browsers.

Don't just check once – keep an eye on it permanently

fastry monitors your website regularly and lets you know when something changes.

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