What does HSTS Checker verify?
It verifies whether the Strict-Transport-Security header exists and whether policy directives indicate robust HTTPS enforcement.
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HSTS Status Checker FAQs
Everything you need to know about the HSTS Status Checker tool, how it works, and how to interpret the results.
Why does HSTS matter for security?
HSTS helps prevent protocol downgrade and cookie leakage on first-party domains by instructing compliant browsers to enforce HTTPS.
What is the risk of weak max-age values?
Low max-age values reduce policy persistence and can weaken practical protection if HTTPS policy is accidentally removed.
Should includeSubDomains always be enabled?
Only if every relevant subdomain is HTTPS-ready. Enabling it too early can break legacy endpoints.
Does this tool submit to the preload list?
No. It reports policy state only. Preload submission is a separate operational decision and process.
Is response data stored?
No. Checks are returned immediately and handled without long-term storage.
How does HSTS Status Checker fit into a technical SEO workflow?
Use HSTS Status Checker as one layer in a repeatable workflow: run diagnostics, log output, compare trend changes, and escalate anomalies before they affect crawl reliability or user experience.
Can I combine HSTS Status Checker with other Velohost tools?
Yes. Teams commonly combine results with DNS, SSL, canonical, and performance checks to build stronger release gates and faster incident triage.