// Security
A security header that tells browsers to always connect to your site over HTTPS, even if the user types http://. Prevents downgrade attacks and ensures all traffic is encrypted.
Why it matters: HSTS (HTTP Strict Transport Security) is one of the security signals that shapes how search engines, AI tools, and real visitors experience your website. Getting it right removes friction, protects your rankings, and makes every other optimization work harder. Auditing it regularly is the fastest way to catch regressions before they cost you traffic or conversions.
See how your own site handles hsts (http strict transport security) — no signup required.
Check your site's HSTS (HTTP Strict Transport Security) — run the free Security Agent