Protected return visits
The browser goes straight to HTTPS instead of beginning a later visit over an insecure connection.
HSTS protects later visits
The browser remembers that the website must only be opened over HTTPS.
A secure connection on every return visit
Configure HSTS without locking out the website or subdomains
HSTS tells a browser to remember that the site must use HTTPS. On later visits, the browser avoids insecure HTTP and will not allow a dangerous certificate error to be bypassed.
- one consistent HSTS policy;
- a staged increase in duration;
- subdomains and preload only after separate review.
What the business gains
More customer trust
Less risk of security warnings during sign-in, form completion or an order.
One policy
A single correct header replaces conflicting CDN, panel and server settings.
What the work includes
- Test the exact canonical HTTPS address without redirects.
- Confirm that the certificate and HTTP-to-HTTPS redirect already work.
- Identify the correct layer: server, hosting or CDN.
- Enable a short
max-ageand test the site. - Increase the duration after testing and verify again.
Safe service boundaries
| Element | Status | Reason |
|---|---|---|
| HSTS for the main site | Included | The core deliverable. |
| Working SSL and HTTPS redirect | Before HSTS | Enabling the policy without them is unsafe. |
includeSubDomains | After review | Every subdomain must permanently support HTTPS. |
| HSTS Preload | Separate | A long-term commitment whose removal can take months. |
To investigate first, use the safe deployment guide or the manual HSTS check.
What we need
We need the domain, a subdomain inventory and, after approval, secure server, panel or CDN access. Preload and subdomain coverage are never enabled without separate confirmation.
Enter the domain below. We will check the current header and propose a safe configuration.
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* Average response time: 30 minutes
