Security Headers Checker
Analyze your website security headers, detect vulnerabilities, and improve protection against web attacks (XSS, Clickjacking, etc.).
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Analyzing security headers...
Frequently Asked Questions about Security Headers
What are HTTP security headers?
Security headers are instructions sent by the web server to the browser, telling it how to handle website content safely and prevent common attacks like Cross-Site Scripting (XSS) and Clickjacking.
Why are HSTS and CSP important?
HSTS forces secure HTTPS connections, preventing man-in-the-middle attacks. CSP (Content Security Policy) restricts which resources can be loaded, blocking most XSS injection vectors.