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Free SSL Checker

Check whether a public website is reachable over HTTPS, whether plain HTTP redirects to HTTPS and whether the secure response sends HSTS. The report focuses on transport signals the Toolmera edge can verify directly.

TOOLMERA / WEBSITE ANALYSIS
SSL Checker
Live public URL analysis
Toolmera fetches only public HTTP/HTTPS pages. Local/private hosts and non-standard ports are blocked, redirects are capped, and response bodies are size-limited.
Public-data onlyLive public HTTP/HTTPS checks
Instant workflowNo setup or account required
Free core toolOpen it and get the task done
WHY TOOLMERA

Built to get the task done.

  • HTTPS connection check
  • HTTP → HTTPS redirect
  • HSTS response header
ABOUT THIS TOOL

Free SSL Checker — Check HTTPS, HSTS & Secure Website Connection

Free SSL and HTTPS checker for live HTTPS reachability, HTTP-to-HTTPS redirect behavior, final secure URL and Strict-Transport-Security headers.

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.

HOW IT WORKS

How to use SSL Checker

01

Enter the website URL

Use the public host whose HTTPS and transport behavior you want to verify.

02

Check HTTPS and HSTS

Toolmera confirms the final secure scheme, tests HTTP-to-HTTPS redirect behavior and reports Strict-Transport-Security when present.

03

Review transport gaps honestly

Use the verified HTTPS signals here and a certificate-specific service when you need issuer, chain or expiry metadata.

SOURCES

Reference material used for this page:

MDN HTTPS overviewMDN HSTS
KEEP GOING

Related tools

Useful next steps in the same workflow.

FAQ

Common questions

Is this SSL checker free?

Yes. It checks public HTTP and HTTPS transport signals without an account.

Does it show certificate expiry?

Not currently. The edge fetch interface used by this tool does not expose the served certificate expiry, so Toolmera does not fabricate it.

What does HSTS do?

HSTS tells compatible browsers to use HTTPS for the host for the policy duration after receiving the header over a secure connection.

Why check the HTTP version too?

It confirms whether users entering an insecure URL are redirected to the secure HTTPS version.

Is HTTPS a substitute for application security?

No. HTTPS protects transport. Application security also depends on authentication, authorization, software updates, headers and secure code.