Free Tool
Security Headers Analyzer
Scan critical response headers to harden your site against common web threats.
Security signals
Protection gaps
Instant audit
CSP & HSTS
Content Security Policy and HTTP Strict Transport Security.
Frame Protection
X-Frame-Options and Cross-Origin policies.
MIME Sniffing
X-Content-Type-Options and referrer policies.
Why Security Headers Matter
Security headers protect your site from XSS, clickjacking, and data injection attacks. Missing headers leave your site vulnerable.
10Headers checked
CSPCritical header
HSTSHTTPS enforcement
Frequently Asked Questions
Which headers are most critical?
CSP, HSTS, and X-Frame-Options provide the strongest protection against common attacks.
Where do I set these headers?
Configure them at your web server, CDN edge, or reverse proxy for consistent coverage.