All Tools
Free Security Headers Analyzer
Analyze your HTTP security headers and get recommendations to improve protection
Content Security Policy
Prevent XSS and data injection by controlling which resources can be loaded.
HSTS
Force browsers to always use HTTPS, preventing protocol downgrade attacks.
X-Frame-Options
Protect against clickjacking by controlling if your site can be embedded.
Copy-Paste Fixes
Get ready-to-use configuration snippets for Nginx, Apache, and Express.js.
Frequently Asked Questions
HTTP security headers are directives sent by web servers to browsers that help protect against common attacks like XSS, clickjacking, and man-in-the-middle attacks. Key headers include Content-Security-Policy (CSP), Strict-Transport-Security (HSTS), X-Frame-Options, X-Content-Type-Options, and Referrer-Policy.