HTTP
HTTP Header Analyzer
Analyze HTTP response headers and check security headers like CSP, HSTS, X-Frame-Options.
Headers are fetched from our server — no client-side requests.
How to use
- Enter a domain, URL, or value relevant to HTTP Header Analyzer.
- Run the check and review the output carefully.
- Apply recommended fixes, then run the check again to verify.
Common use cases
- Pre-deployment validation for HTTP Header Analyzer.
- Incident triage when security checks fail in production.
- Periodic security review as part of technical SEO and hardening.
Example inputs
https://example.comexample.comCommon issues and fixes
Missing CSP
Content-Security-Policy not set — increases XSS risk. Add a restrictive policy.
Missing HSTS
Strict-Transport-Security not set — allows downgrade attacks. Add max-age=31536000; includeSubDomains.
Missing X-Frame-Options
Clickjacking risk. Add X-Frame-Options: DENY or SAMEORIGIN.
Recommended remediation
Add security headers in nginx, Apache, or your app. Prioritize: CSP, HSTS, X-Frame-Options, X-Content-Type-Options.
FAQ
Is HTTP Header Analyzer free to use?
Yes. This tool is free and can be used without account registration.
Do you store submitted values?
Only the minimum processing needed for the check. For client-side tools, data stays in your browser.
How should I use these results?
Use the output as a diagnostic baseline, apply fixes in your stack, then re-run the check to confirm remediation.
Related security tools
HSTS Checker
Check Strict-Transport-Security header. Verify max-age, includeSubDomains, preload.
CORS Checker
Check Access-Control-* headers. Verify Allow-Origin, credentials, methods.
Clickjacking Checker
Check X-Frame-Options and CSP frame-ancestors. Detect clickjacking vulnerability.
CSP Checker
Check Content-Security-Policy. Parse directives, detect unsafe-inline, unsafe-eval.
Cookie Analyzer
Parse Set-Cookie headers. Check HttpOnly, Secure, SameSite.