Free HTTP Security Header Analyzer Online
Analyze HTTP response headers to find missing security configurations and vulnerabilities.
Detailed Header Analysis
🚀 Help Us Build More AI-Powered Tools
We're working on bringing free AI tools to Bizmatepro — including AI writing, image generation, code helpers, and more. Your support helps us cover server costs and keep 100+ tools completely free, with no ads and no signup.
HTTP Security Header Analyzer
Modern web browsers support a variety of HTTP headers designed to improve website security and mitigate common attacks. Our HTTP Security Header Analyzer scans your website's server response and identifies which critical security headers are missing or misconfigured.
Crucial Security Headers Explained
- Strict-Transport-Security (HSTS): Prevents man-in-the-middle attacks by forcing browsers to only connect via HTTPS. It ensures no data is accidentally sent over insecure HTTP.
- Content-Security-Policy (CSP): One of the most powerful headers. It prevents Cross-Site Scripting (XSS) and data injection attacks by restricting where scripts and resources can be loaded from.
- X-Frame-Options: Prevents Clickjacking attacks by telling the browser not to render the page inside an iframe on another domain.
- X-Content-Type-Options: Stops browsers from trying to MIME-sniff the content type, preventing attackers from executing uploaded disguised files (like a script hiding as an image).
How To Fix Missing Headers?
If your website receives a low grade, you need to configure your web server (Nginx, Apache) or your framework (Next.js, Express, Django) to append these headers to every response. Alternatively, services like Cloudflare can inject these headers automatically for you.