What this free SSL checker verifies
Toolmera attempts the requested HTTPS connection through the edge network and confirms the final scheme and HTTP response. For HTTPS targets it also tests the equivalent HTTP URL to see whether traffic is upgraded to HTTPS through the redirect chain.
The checker reports the Strict-Transport-Security header when present. HSTS tells compatible browsers to prefer HTTPS for the host after the policy has been received over a valid secure connection.
Why HTTPS redirects matter
A site can support HTTPS while still serving an HTTP version separately. Redirecting HTTP traffic to the canonical HTTPS URL reduces duplicate entry points, helps users land on the secure version and keeps internal linking and canonicalization simpler.
After enabling HTTPS, test representative URLs rather than only the homepage. Mixed redirect rules, old subdomains and application-specific paths can behave differently.
Certificate issuer and expiry are not fabricated
The current Toolmera edge fetch confirms that a trusted HTTPS connection can be established, but it does not expose the remote certificate issuer, serial number or expiry date to this application layer.
Instead of inventing certificate metadata, the tool explicitly limits its report to verifiable HTTPS, redirect and HSTS signals. A future certificate-specific backend can add issuer and expiry data if a reliable TLS inspection source is introduced.