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Three new free tools: SSL checker, domain expiry, redirect chain

SSL certificate checker, domain expiry checker, and an HTTP header and redirect chain checker. No account needed, no email capture.

No account needed, no email capture.

  • SSL certificate checker: chain, issuer, expiry, days left.
  • Domain expiry checker: registrar expiry for the domain, the thing that takes a site down with no warning.
  • HTTP header and redirect chain checker: every hop with its raw Location, the final status, and the full header set. Names the failures the last status code hides: a loop, a hop limit, a chain that leaves the host and drops cookies, a chain ending on plain HTTP.

All tools: /tools.

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