Free HTTPS & HSTS Checker
Verify HTTPS redirects, HSTS policy, and preload readiness.
Improve transport security and prevent protocol downgrade attacks.
- HTTPS redirects
- HSTS max-age
- Preload readiness
"Barrion's security scanning has helped us implement best security practices efficiently, saving us countless hours."
Sarah Chen
Head of Security
"We identified and fixed critical vulnerabilities before our platform launch, saving us from potential data breaches."
Marcus Anderson
CTO
"Barrion gives us peace of mind, knowing we're notified of any security issues. Exactly what our team needed."
Oskar Nilsson
Tech Lead
Scan in three simple steps
Fast, safe, non-intrusive checks with actionable results.
Start scan
Enter your URL, and click the start scan button to begin.
Scan runs
Barrion performs passive, read-only security checks with minimal site impact.
View results
See security findings with prioritized, actionable recommendations.
What is HTTPS & HSTS?
HTTPS encrypts traffic. HSTS forces browsers to use HTTPS for your domain, preventing downgrade and cookie leakage over HTTP.
What this checker validates
- HTTPS redirect chain and mixed HTTP hops
- HSTS max-age, includeSubDomains, preload token
- Preload list readiness criteria
How to fix common failures
- Redirect HTTP to HTTPS at the edge (single hop)
- Set max-age ≥ 31536000, and add includeSubDomains and preload
- Verify subdomains are HTTPS‑ready before preloading
Tool-specific questions
What max-age for preload?
Is HSTS risky?
Do I need both www and apex?
How do I become HSTS preload-ready?
Why Choose Barrion?
Real-Time Results
Instant security analysis with detailed reports, giving you an immediate security overview
Comprehensive Checks
Multiple best-practice security checks in a single scan, for broad coverage
Actionable and Effective
Clear recommendations for fixes, helping you improve your security quickly and effectively
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