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SSL certificate checker

Check HTTPS trust and certificate details. Requires the optional server checker.

Backend required — this check is not active.

A browser cannot inspect arbitrary response headers, redirect chains or remote certificates safely and reliably. Use Developer Tools, the browser certificate viewer or your provider’s diagnostics. This page does not generate a result.

Result

Your result will appear here.

This check is unavailable until a server backend is installed and tested. No request will be made.

What this tool can tell you

Required backend: HTTP(S) fetching with TLS validation, public-address checks before every connection and redirect, pinned resolved addresses, bounded time and response size, rate limits and clear failure responses. HTTPS trust must never be bypassed to produce a green result. This upload contains no such backend.

No check is performed by this page. Follow the manual diagnostic steps in the related guides.