Tools / SSL/TLS checker

SSL/TLS checker

Test the certificate, chain and protocols of any server: website, mail server or API.

The test connects to the server you enter from our servers in Portugal and does not store results. It does not test STARTTLS ports (25 and 587).

By API or with AI assistants. This check is available in the public API (ssl/check) and on the MCP server as check_ssl.

curl "https://digitaltrust.pt/api/v1/ssl/check?host=company.eu"

API and MCP documentation.

Other tools

More checks, no sign-up.

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Check your certificate request before you send it: names, organisation, key and signature.

CSR generator

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SSL converter

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CAA checker

See which Certification Authorities may issue for your domain, before you order.

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Check SPF, DKIM, DMARC, BIMI, MTA-STS and TLS-RPT for your domain in one test.