🔒 HSTS Preload Eligibility Check
hstspreload.org submission criteria (HSTS header, max-age ≥ 1 year, includeSubDomains, preload, HTTP→HTTPS redirect, HTTPS on the www subdomain) are checked automatically.
✅ 100% free, no signup
hstspreload.org submission criteria (HSTS header, max-age ≥ 1 year, includeSubDomains, preload, HTTP→HTTPS redirect, HTTPS on the www subdomain) are checked automatically.
✅ 100% free, no signup