Security Headers Checker
Analyze your website's HTTP security headers. Check HSTS, CSP, X-Frame-Options, and more.
How It Works
Enter a URL
Paste any URL to test its HTTP security headers configuration.
We analyze 11 headers
We check HTTPS, HSTS, CSP, X-Frame-Options, X-Content-Type-Options, Referrer-Policy, Permissions-Policy, and cross-origin policies.
Get your score
See your security headers score (0-100) with specific recommendations for each missing or misconfigured header.
Why Security Headers Matter
HTTP security headers protect your website and users from common attacks like clickjacking, cross-site scripting (XSS), MIME-type sniffing, and data theft. Missing headers leave your site vulnerable.
This tool checks the 11 most important security headers and gives you actionable recommendations to harden your website's HTTP response headers.
How the security headers checker by robotspeed works
Enter a URL or text. Get instant analysis with actionable insights.
Enter your URL or content
Provide the input for the security headers checker by robotspeed. Our tool analyzes it using proven SEO and technical standards.
Instant analysis
The security headers checker by robotspeed processes your input and delivers a detailed breakdown of issues and recommendations.
Fix issues and improve
Follow the specific recommendations to improve your scores. Re-run the check after making changes to verify improvements.
Frequently asked questions
Common questions about the security headers checker by robotspeed.
What are HTTP security headers?
HTTP security headers are directives sent by a web server in the HTTP response that instruct the browser how to behave when handling your website's content. They protect against attacks like clickjacking, XSS, MIME sniffing, and data theft.
Which security headers are most important?
The most critical security headers are: Strict-Transport-Security (HSTS) to enforce HTTPS, Content-Security-Policy (CSP) to prevent XSS attacks, X-Frame-Options to block clickjacking, and X-Content-Type-Options to prevent MIME sniffing.
How do I add security headers to my website?
Security headers are added via your web server configuration (Apache, Nginx), CDN settings (Cloudflare, Vercel), or application framework. For example, in Nginx: add_header Strict-Transport-Security "max-age=31536000; includeSubDomains" always;
What is a good security headers score?
A score of 75+ (grade B or higher) means your site has the essential security headers configured. A score of 90+ (grade A) means excellent protection. Most sites score below 50 because many headers are missing by default.
Do security headers affect SEO?
While security headers don't directly impact SEO rankings, HTTPS (which HSTS enforces) is a confirmed Google ranking factor. Additionally, a secure site builds user trust and reduces bounce rates, which indirectly benefits SEO.
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