HTTP Security Headers Analyzer
Paste HTTP response headers, get an A+ to F security grade, detect vulnerabilities, and generate server configs
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Critical missing headers
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HTTP Security Headers Analyzer — Grade Your Server's Security
HTTP response headers are the first line of defense for any web application. Security headers likeContent-Security-Policy, Strict-Transport-Security, X-Frame-Options, andX-Content-Type-Options tell browsers how to safely handle your content — blocking XSS attacks, preventing clickjacking, enforcing HTTPS, and stopping MIME type sniffing.
This analyzer parses raw HTTP response headers and gives you an instant security grade from A+ to F. Each header gets an individual assessment: ✅ secure, ⚠️ needs improvement, or ❌ missing. The Config Generator tab produces ready-to-paste server configurations for Express.js, Nginx, and Apache.
Analyze Your Headers in 30 Seconds
Grab your headers
Open DevTools → Network → any request → Response Headers. Or run curl -I https://yoursite.com in your terminal.
Paste & analyze
Paste the raw header block and click Analyze. The tool parses every header and runs security checks instantly.
Read your grade
Get an A+ to F letter grade with per-header details: what it does, current value assessment, and recommended value.
Fix with config
Switch to Config Generator and copy production-ready Express.js, Nginx, or Apache config to fix all missing headers.
Who Uses HTTP Headers Analysis
Security audits
Quickly audit your app before launch or as part of regular security reviews.
Penetration testing
Identify missing security headers as part of a pentest or vulnerability assessment.
DevOps hardening
Generate Nginx/Apache config blocks to add missing headers to your server setup.
Compliance checks
Verify headers required for OWASP Top 10 compliance and security benchmarks.
Backend development
Confirm your Express.js/Next.js app is serving all required security headers.
Learning web security
Understand what each header does and how it protects users from specific attack vectors.
Frequently Asked Questions
1What are HTTP security headers?
2How do I get my site's response headers?
3What is Content-Security-Policy?
4What does HSTS do?
Feedback for http_headers_analyzer
Tell us what's working, what's broken, or what you wish we built next — it directly shapes our roadmap.
Good feedback is gold — a rough edge you hit today could be smoother for everyone tomorrow.
- Feature ideas often jump the queue when lots of you ask.
- Bug reports with steps get fixed faster — paste URLs or examples if you can.
- Name and email are optional; we won't use them for anything except replying if needed.
Stay Updated
Get the latest tool updates, new features, and developer tips delivered to your inbox.
- Product updates & new tools
- JSON, API & developer tips
- Unsubscribe anytime — no hassle